Epson Stylus Pro 4910 Service Manual
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Epson Stylus Pro 4910 Service Manual

Large format color inkjet printers
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Table of Contents

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See also: User Manual , Setup Manual

SERVICE MANUAL

Large Format Color Inkjet Printer
Epson Stylus Pro 4900
Epson Stylus Pro 4910
Confidential
SEIJ10007

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Table of Contents
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Summary of Contents for Epson Stylus Pro 4910

  • Page 1: Service Manual

    SERVICE MANUAL Large Format Color Inkjet Printer Epson Stylus Pro 4900 Epson Stylus Pro 4910 Confidential SEIJ10007...
  • Page 2 2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.

  • Page 3: About This Manual

    Describes the step-by-step procedures for disassembling and assembling the product. CHAPTER 4.ADJUSTMENT Provides Epson-approved methods for adjustment. CHAPTER 5.MAINTENANCE Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives required for servicing the product. CHAPTER 6.APPENDIX Provides the following additional information for reference: •...

  • Page 4: Symbols Used In This Manual

    Symbols Used in this Manual Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action. Be aware of all symbols when they are used, and always read NOTE, CAUTION, or WARNING messages. Indicates an operating or maintenance procedure, practice or condition that is necessary to keep the product’s quality.
  • Page 5 Revision Status Revision Date of Issue Description October 8, 2010 First release Confidential...

  • Page 6: Table Of Contents

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Contents Chapter 1 PRODUCT DESCRIPTION 2.7 Printer does not Operate ..................87 2.8 Abnormal Operations ..................89 1.1 Product Description .................... 11 2.9 Problems on SpectroProofer ................91 1.2 Basic Specifications .

  • Page 7: Table Of Contents

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Chapter 4 ADJUSTMENT 4.12.2 Maintenance Box Remaining Space Check ........... 357 4.12.3 Ink Eject and Initial Charge ..............358 4.1 Overview ......................278 4.12.4 Ink Selector Movement Check .............. 360 4.1.1 Precautions ....................278 4.12.5 ILS &...

  • Page 8: Table Of Contents

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Chapter 5 MAINTENANCE 5.1 Overview ......................410 5.2 Setting Up/Storing the Printer ................412 5.2.1 Setting Up ....................412 5.2.2 Storing the Printer and Cleaning the Ink Path ......... 412 5.3 Transportation .
  • Page 9 C H A P T E R PRODUCT DESCRIPTION Confidential...

  • Page 10: Product Description

    Lower running cost Employs 200 ml super high-capacity independent ink cartridges Epson Stylus Pro 4900/4910 is a wide-format color inkjet printer that supports up to 17 Equips the on-demand cleaning function without excessive suction of ink inch wide (A2) paper.
  • Page 11 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A SpectroProofer (Option) Full-fledged spectrophotometer realizes high precision color measurement. Selectable from specifications with/without the UV filter, which enables the users to configure colorimetric system adjusted with their workflow. Drying Fans for drying ink stabilizes color in less than 2 minutes 30 seconds.

  • Page 12: Basic Specifications

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.2 Basic Specifications 1.2.2 Electric Specifications Specification 1.2.1 Basic Specifications Item SpectroProofer is Main body installed Item Specification Rated voltage 100 to 240 VAC Print method On-demand inkjet Input voltage range...

  • Page 13: Ink Specifications

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.2.3 Ink Specifications 1.2.4 General Specifications Item Specification Item Specification Form Exclusive ink cartridge Operating: 10 to 35 °C Black system: Storage (before unpacked): -20 to 60 °C Photo black, Matte black, Light black, Light light black (within 120 hours under 60 °C, and within 1 month under...

  • Page 14: Reliability/Durability

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.2.5 Reliability/Durability Item Specification Remarks Until any one of the following conditions is met. 5 years Carriage life: Operating life of the printer 3,000,000 paths Approx. 25,000 pages (Super A2 size/Plain paper/Quality mode/720x720 dpi) Standard paper: approx.

  • Page 15: Printing Specifications

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.3 Printing Specifications 1.3.2 Paper Specification 1.3.2.1 Supported Paper 1.3.1 Paper Feed Specifications The following explains the supported paper sizes and thickness. Item Specification Do not use wrinkled, scuffed, torn, or soiled paper.
  • Page 16 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A CUT SHEET Item Specification Paper type Plain paper, recycled paper Width: 203 to 432 mm Paper size Length: 254 to 610 mm Paper thickness 0.08 to 0.11mm Weight 64 to 90g/m...
  • Page 17 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.3.2.2 Designated Paper ROLL PAPER Note "*1": OK!: Recommended for borderless printing OK: Borderless printing is available NA: Borderless printing is NOT available Borderless printing on the borderless printing available paper (OK) may result in drop in print quality or fail to produce complete borderless (white margins may appear) due to expanding of the paper. Borderless printing can be made on commercially available paper, however, note that the availability is restricted by the paper size.
  • Page 18 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 1-2. Designated Roll Paper List Size Borderless Core Name Thickness Roll Paper Tension ICC Profile Black Ink Print Diameter inch Epson Stylus Pro 4900_4910 Epson Proofing Paper Publication 0.20 3"...
  • Page 19 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A CUT SHEET Note "*": OK!: Recommended for borderless printing OK: Borderless printing is available NA: Borderless printing is NOT available Borderless printing on the borderless printing available paper (OK) may result in drop in print quality or fail to produce complete borderless (white margins may appear) due to expanding of the paper. Borderless printing can be made on commercially available paper, however, note that the availability is restricted by the paper size.
  • Page 20 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 1-3. Designated Cut Sheet List Print from Paper Sheets per Paper Name Size Borderless Print Thickness ICC Profile Black Ink Cassette Cassette (Max.) Letter (8.5" x 11") Epson Stylus Pro 4900_4910 Archival Matte Paper/ ArchivalMattePaper_MK.icc/...
  • Page 21 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 1-3. Designated Cut Sheet List Print from Paper Sheets per Paper Name Size Borderless Print Thickness ICC Profile Black Ink Cassette Cassette (Max.) Letter (8.5" x 11") Epson Stylus Pro 4900_4910 Super A3 / B VelvetFineArtPaper_PK.icc/...

  • Page 22: Printable Area

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.3.3 Printable Area Note "*1": When the “Roll Paper (Banner)” is selected for the “Source” in the “Paper Settings” of the printer driver, the top and bottom margins become 0 mm.

  • Page 23: Borderless Printing Specification

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.3.4 Borderless Printing Specification Table 1-4. Borderless Printing Mode Driver Setting Printer Operation Remarks AVAILABLE PAPER TYPE Prints an image bleeding it off Printing is interrupted all the edges of paper.

  • Page 24: Cutting Of Roll Paper

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.3.5 Cutting of Roll Paper Setting from the printer Select “Auto Cut” in the “Paper Setting” window of the printer driver. The printer offers two ways of cutting for roll paper.

  • Page 25: Hardware Specifications

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.4 Hardware Specifications SPECTROPROOFER MOUNTER This section provides the printer dimensions and shows the main components. 1.4.1 Dimensions and Weight 267 mm MAIN UNIT 199 mm 787 mm Figure 1-4. Dimensions...

  • Page 26: Part Names

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.4.2 Part Names BACK SIDE OF MAIN UNIT/SPINDLE FRONT SIDE OF MAIN UNIT Edge guide Paper guide Rear paper feed slot Roll paper feed slot Printer cover Roll paper cover Spindle holders...
  • Page 27 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A SPECTROPROOFER MOUNTER Color Measurement Device carriage Handles Front Cover ILS DC cable Paper Presser ILS communication cable Air vent Side Cover Backing insert White calibration tile Printer connection cable slot holder insert slot...

  • Page 28: Control Panel

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.5 Control Panel BUTTONS [Pause/Cancel] button [Power] button [Paper Feed] buttons [Paper Set] button [Menu] button [Paper Source] button [Paper Cut] button [Paper Feed] buttons [Ink menu] button [OK] button Figure 1-8. BUTTONS...
  • Page 29 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Function Button Name When pressed down When pressed normally For panel setting for 2 sec. 1 [Power] button Turns the printer On or Off. Power-off 2 [Pause/Cancel] button When printing: Pauses the operation Cancels the panel settings.
  • Page 30 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A LIGHTS (LED) Name Color Status Description The printer power is on. Paper Check light Ink Check light The printer is receiving a data or performing the power-off Power Green Flashing sequence.
  • Page 31 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Item Description Normal indication Message Printer status, operating status, or an error message is displayed. Displays the setting of “Platen Gap”. : “Narrow” is selected. : “Wide” is selected. Platen Gap : “Wider”...
  • Page 32 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Ink remaining ICONS ON THE LCD Remaining ink level of each color Icon Ink Cartridge Ink cartridge There is enough ink remaining. Ink Color Green (GR) Prepare a new ink cartridge.

  • Page 33: Setup Menu

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.5.1 Setup Menu 1.5.1.1 Printer Setup Menu Table 1-5. Menu Mode Settings List Settings Menu Menu Item Explanation (shaded one is the default) Narrow Standard Sets the platen gap (gap between the printhead and the platen).
  • Page 34 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 1-5. Menu Mode Settings List Settings Menu Menu Item Explanation (shaded one is the default) Auto Roll Feeding When this is set to ON, the paper is fed on the platen from the roll paper standby position.
  • Page 35 Paper Thickness • When Epson paper is used, select the paper type. Paper Thickness • When not Epson paper is selected, enter the thickness of the selected paper. Auto Sets whether to carry out the head alignment adjustment automatically or manually.
  • Page 36 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 1-5. Menu Mode Settings List Settings Menu Menu Item Explanation (shaded one is the default) Hide Network Settings The Network Setup menu items appear on the LCD only when this is set to Show.
  • Page 37 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.5.1.2 Custom Paper Menu Table 1-6. Custom Paper Menu List Settings Menu Item Explanation (shaded one is the default) Photo Paper Proofing Paper Fine Art Paper Paper Type Sets the paper type loaded on the printer.

  • Page 38: Ink Menu

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.5.1.3 Ink Menu Table 1-7. Ink Menu List Menu Item Settings Explanation Selects Yes to execute Auto Nozzle Check and Auto Cleaning head cleaning. C/VM, PK (MK)/LK, O/ G, LLK/Y, VLM/LC, All...
  • Page 39 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A PG Settings List Table 1-8. PG Settings List The table below shows the actual platen gap amount specified by the printer driver Paper Paper Thickness Media Table or Printer Thickness Menu Setting PG Value (mm) or the control panel.
  • Page 40 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Firmware version information The table below explains the firmware version information printed by selecting the Version in the Printer Status menu. <Format> M0XXXX,xx.xx,IBCC Table 1-9. Firmware Version Information Item Explanation The code assigned to this printer: M0 “0”...

  • Page 41: Maintenance Mode

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.5.2 Maintenance Mode Settings Menu Item (shaded one is the Explanation The maintenance mode allows you to change the environmental settings such as default) language and unit settings to be displayed, or to return all the settings to their default.

  • Page 42: Serviceman Mode

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 1.5.3 Serviceman Mode The Serviceman Mode is intended to be used by a service personnel for servicing the printer. HOW TO START & QUIT Turn the printer on by pressing the [OK], [Paper Feed/Down], and [Menu/Right] buttons together.
  • Page 43 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Menu Explanation H to F Speed F to H Speed Page Size Life Count Feed Amount 1 Feed Speed 1 Feed Amount 2 Feed Speed 2 Wait GS Change Position 1...
  • Page 44 Epson Stylus Pro 9900/7900 Revision A Menu Explanation Wait1 Wait2 Life Wait3 Configures the durability evaluation settings of the mechanism and the printhead. Life Count Display Count Display Count PRODUCT DESCRIPTION Control Panel Confidential...

  • Page 45: Trouble Shooting

    C H A P T E R TROUBLE SHOOTING Confidential...

  • Page 46: Overview

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 2.1 Overview 2.1.1.2 Recurrence check of the trouble Check if the trouble the user claims recurs with the returned printer. This section explains the basic procedure for troubleshooting problems on the printer If RIP was used, check if the trouble recurs when the driver is used.

  • Page 47: Troubleshooting Procedure

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 2.1.2 Troubleshooting Procedure 2.1.3.2 If necessary to escalate the trouble case Make a report with the following data. Refer to the following items according to the observed symptom, carry out the corresponding troubleshooting following the procedures described in the next sections.

  • Page 48: Remedies For Maintenance Requests

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 2.2 Remedies for Maintenance Requests This section describes the remedies for maintenance requests. Maintenance requests do not effect the printer’s operation; therefore, you can continue the current printing. When a maintenance request error occurs, the printer displays on the LCD a hexadecimal code of “NNNN” which correspond to the bit numbers assigned to error statuses as shown in the table below.
  • Page 49 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A REMEDY FOR NO. 0010/4000 If the Maintenance Request No. 0010 or No. 4000 occurs, take the following measure according to the procedure below. NOTE : There is a priority for occurrence of No. 0010 and No. 4000. Because No. 0010 has the priority, when both No. 0010 and No. 4000 occur at the same time, No. 4000 is not displayed, but No.

  • Page 50: Remedies For Service Call Error

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 2.3 Remedies for Service Call Error The following tables explains the Service Call error messages and remedies. Code Error Name Cause Check Item Remedy Replace the following parts and reset the counter of the CR Motor.
  • Page 51 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy Detects that it is being driven at an irregularly faster speed 1. Replace the CR Encoder. (See than the specified value just before stopping.
  • Page 52 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy 1. Replace the PF Encoder. (See 1. Check the following connection for disconnection and The electric current flowing when driving the motor is P.183) damage.
  • Page 53 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy 1. Check the following connection for disconnection and 1. The PF Motor or the PF Encoder is not connected correctly. damage. 2. Detects that it is being driven at an irregularly slower speed PF Encoder to SUB-C Board (CN303) 1.
  • Page 54 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy Detects, when accelerating/decelerating the motor, that it is being driven at an irregularly faster speed than the specified 1. Replace the IS Unit. (See value.
  • Page 55 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy 1. The Ink Selector Motor or the Ink Selector Sensor is not 1. Check the following connection for disconnection and connected correctly. damage. 2. Connection between the SUB Board and the Main Board...
  • Page 56 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy Detects, when accelerating/decelerating the motor, that it is being driven at an irregularly faster speed than the specified 1. Replace the APG Motor Assy.
  • Page 57 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy The electric current flowing when driving the motor is irregularly large. 1. Check the connection of the Roll Feeding Motor Assy Roll Feeding Motor Assy cable is damaged.
  • Page 58 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy When detecting the origin of the driven roller (to reset the 1. Check the connection of the Release Sensor (CN307) for 1. Replace the Release Sensor.
  • Page 59 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy 1. Connection failure of the Release Sensor. 2. Detects, when accelerating/decelerating the motor, that it is 1. Replace the Release Motor being driven at an irregularly faster speed than the specified Assy.
  • Page 60 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy 1. Connection failure of the Cutter HP Sensor. 1. Check the connection of the Cutter HP Sensor (CN315) for 2. The electric current flowing when driving the motor is disconnection and damage.
  • Page 61 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy 1. Check if the Paper Thickness Sensor is secured firmly.(See 1. During detection of paper thickness, the thickness cannot be P.195) determined because the sensor is not stable due to vibration Paper Thickness 2.
  • Page 62 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy 1. Connection failure of the Decompression Pump Assy. 2. Detects that it is being driven at an irregularly slower speed 1. Check the connection of the Decompression Pump (CN232, than the specified value.
  • Page 63 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy Detects that the driving period is irregularly long. ASF Motor Replace the Main Board. (See 156D Irregular load driving time-out error P.152) Firmware becomes out of control.
  • Page 64 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy Detects, when accelerating/decelerating the motor, that it is being driven at an irregularly faster speed than the specified 1. Replace the ASF Sub Motor value.
  • Page 65 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy 1. Check the connection of the EG Sensor (CN220) for disconnection and damage. ASF Edge Guide is not operating. The operation of the ASF Edge Guide is not detected.
  • Page 66 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy 1. Connection failure of the Edge Release Assy. 2. Detects that it is being driven at an irregularly slower speed 1. Check the connection of the Edge Release Assy (CN218, than the specified value.
  • Page 67 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy 1. Check if the Roll Unit and the printer are correctly 1. There is an error on the Roll Unit. connected with the cable.
  • Page 68 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy 1. Replace the Head FFC. (See P.249) 1. Connection failure of the Head FFC. 2. Replace the Printhead. (See 2. The head is damaged due to a slant connection of the Head Check the connecting part of Head FFC if there is any loose or P.232)
  • Page 69 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy Main Board Turn the power off and then on again to check if the printer Replace the Main Board. (See communication error IC failure has occurred on the Main Board.
  • Page 70 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy 1. Replace the Cartridge Holder. (Check both right/left ones CSIC control error has occurred. respectively.) (See P.239)(See 1FC1 CSIC error (5) Cartridge Holder Board failure P.242)
  • Page 71 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Error Name Cause Check Item Remedy 1. Replace the Cartridge Holder. (Check both right/left ones ILS control error has occurred. respectively.) (See P.239)(See 1FC9 ILS error (8) Cartridge Holder Board failure P.242)
  • Page 72 2. Replace the Main Board. (See The Main Board is broken. P.152) Note *: When replacing these parts, collect and send them to SEIKO EPSON CORPORATION to request error analysis (See P.48). TROUBLE SHOOTING Remedies for Service Call Error Confidential...

  • Page 73: Remedies For Error Messages Related To Spectroproofer

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 2.4 Remedies for Error Messages related to SpectroProofer The Error messages and their corresponding remedies are explained below. Code Details Cause Check Item Remedy 1. Turn the power off and re-install the SpectroProofer.
  • Page 74 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Code Details Cause Check Item Remedy 1. Check if there is any foreign material on the fan, and The Drying Fan is not rotating. the fan can rotate manually. Drying Fan lock There is a foreign object stuck in the fan.

  • Page 75: Remedies For Print Quality Troubles

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 2.5 Remedies for Print Quality Troubles This section provides troubleshooting of print quality troubles classifying them by observed symptom. Before performing troubleshooting, refer to and print “Nozzle Check” (p334) nozzle check pattern. Confirm the printed result of the nozzle check pattern, and if any dot missing is found, perform the cleaning. Carry out “CL1” if nine nozzles or less are found, and “CL2”...
  • Page 76 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-3. Print Quality Troubles Symptom Cause Check Item Remedy If it is not correctly adjusted, carry out the Carry out “Test Pattern Print” from the Service Program. following adjustments. (See P.309)
  • Page 77 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-3. Print Quality Troubles Symptom Cause Check Item Remedy Check the paper type setting screen. 1. Correct the paper type setting. The print setting is not proper. Check if the paper type setting is proper.
  • Page 78 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-3. Print Quality Troubles Symptom Cause Check Item Remedy Check the paper type setting screen. 1. Correct the paper type setting. The print setting is not proper. Check if the paper type setting is proper.
  • Page 79 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-3. Print Quality Troubles Symptom Cause Check Item Remedy Check the paper type setting screen. 1. Correct the paper type setting. The print setting is not proper. Check if the paper type setting is proper.
  • Page 80 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-3. Print Quality Troubles Symptom Cause Check Item Remedy Clean the platen if it is contaminated. (See Check if the ink is attached on the platen. P.416) The platen is contaminated.
  • Page 81 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-3. Print Quality Troubles Symptom Cause Check Item Remedy The UltraSmooth Fine Art Paper is automatically loaded (even it is not Check if the roll paper feeding is set to auto.

  • Page 82: Trouble On Paper Feeding

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 2.6 Trouble on Paper Feeding This section describes the possible trouble on paper feeding and its causes, and their remedies. Table 2-4. Trouble on Paper Feeding Symptom Cause Check Item Remedy Remove Paper Cassette once and set the paper once again.
  • Page 83 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-4. Trouble on Paper Feeding Symptom Cause Check Item Remedy If their attachment status is incorrect, install the Carry out PF Encoder and Scale Check. (See P.368) parts once again.(See P.183)(See P.184)
  • Page 84 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-4. Trouble on Paper Feeding Symptom Cause Check Item Remedy “Auto Roll Feeding” function is enabled. The paper is cut shorter than the current Check in the Paper Setup menu if Auto Roll Feeding is custom paper size, when printing lengthy Disable Auto Roll Feeding.
  • Page 85 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-4. Trouble on Paper Feeding Symptom Cause Check Item Remedy Check the connection of Roll Unit Sensor. Connect the sensor correctly. Roll Unit Sensor is not working. Perform Sensor Check of the service program to check If any abnormality is found, replace Roll Unit if Roll Unit Sensor operates normally.

  • Page 86: Printer Does Not Operate

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 2.7 Printer does not Operate This section describes the possible trouble on inoperative printer and its causes, and their remedies. Table 2-5. Printer does not Operate Symptom Cause Check Item Remedy...
  • Page 87 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-5. Printer does not Operate Symptom Cause Check Item Remedy Start the Service Program “USB Port and Network Communication Check” and check if network Network communication unavailable If there are any problems, check the following.

  • Page 88: Abnormal Operations

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 2.8 Abnormal Operations This section describes the possible trouble on abnormal printer operations and its causes, and their remedies. Table 2-6. Abnormal Operations Symptom Cause Check Item Remedy Measure and check if CR belt tension is within the Adjust CR belt tension if it is out of the standard.
  • Page 89 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-6. Abnormal Operations Symptom Cause Check Item Remedy Lack of lubrication on “SHAFT, If it does not move smoothly, lubricate “SHAFT, RELEASE, PAPER GUIDE, UPPER Does the driven release move smoothly? RELEASE, PAPER GUIDE, UPPER UNIT”.

  • Page 90: Problems On Spectroproofer

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 2.9 Problems on SpectroProofer This section describes the possible trouble on abnormal SpectroProofer operations, their causes, and their remedies. Table 2-7. Problems on SpectroProofer Symptom Cause Check Item Remedy Turn the printer off. Re-insert the...
  • Page 91 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-7. Problems on SpectroProofer Symptom Cause Check Item Remedy Raise the paper eject support. Is the paper eject support of the Stacker raised? Take away the foreign objects Roll paper jam...
  • Page 92 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-7. Problems on SpectroProofer Symptom Cause Check Item Remedy Check the following: Attach the Backing and the white calibration Is the Backing attached to the proper position? tile properly. Is the white calibration tile set?

  • Page 93: Trouble On Service Program

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 2.10 Trouble on Service Program This section describes possible trouble on Service Program and its causes, and their remedies. Table 2-8. Trouble on Service Program Symptom Cause Check Item Remedy Are you running the program on the following operating...
  • Page 94 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-8. Trouble on Service Program Symptom Cause Check Item Remedy Is the printer turned on? Turn on the printer without following errors: cover is open, out of ink, or no media is set.
  • Page 95 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 2-8. Trouble on Service Program Symptom Cause Check Item Remedy Error: “Paper feed error” Check if the current media match the ongoing adjustment. Properly set the media for each adjustment.

  • Page 96: Trouble On Nvram Viewer

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 2.11 Trouble on NVRAM Viewer This section describes possible trouble on NVRAM Viewer and its causes, and their remedies. Table 2-9. Trouble on NVRAM Viewer Symptom Cause Check Item Remedy With a text editor, open the ini file (ServPrg.ini) in the...

  • Page 97: Trouble On Colorimetric Calibration Adjustment Program

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 2.12 Trouble on Colorimetric Calibration Adjustment program This section describes possible trouble on Colorimetric Calibration Adjustment program and its causes, and their remedies. Table 2-10. Trouble on Colorimetric Calibration Adjustment program...
  • Page 98 C H A P T E R DISASSEMBLY & ASSEMBLY Confidential...
  • Page 99 3.1 Overview 3.1.1 Precautions Before starting the disassembly or reassembly of the product, read the following This chapter describes procedures for disassembling the main components of Epson precautions given under the headings “WARNING” and “CAUTION”. Stylus Pro 4900/Epson Stylus Pro 4910.
  • Page 100 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A The power switch for this printer is installed on the secondary Locate the printer on a stable and flat surface. W A R N I N G C A U T I O N side of the power circuit;...

  • Page 101: Cautions After Assembling

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.1.2 Cautions after assembling 3.1.3 Orientation Definition The terms used for indicating the orientation/direction throughout this chapter are as The ink-path-related components or parts should be firmly and C A U T I O N follows.

  • Page 102: Recommended Tools

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.1.4 Recommended Tools To protect this product from damage, use the tools indicated in the following table. For the tools required to perform the adjustment, refer to “Tools/Consumables for Adjustments” in Chapter 4.

  • Page 103: Parts Diagram

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.2 Parts Diagram Refer to the pages indicated in brackets for the required disassembly/assembly procedure. (p151) Left Roll Cover (p137) Left Cover (p133) Printer Cover (p144) Rear Cover (p151) (p142) Right Roll Cover...
  • Page 104 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A (p150) Mid-Left Cover (p145) Rear Unit Rear Unit Sensor (p146) Detects the installation status of the Rear Unit. Mid-Right Cover (p150) Left IC Sensor (p140) Detects the Open/Closed status of the cartridge cover.
  • Page 105 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A SUB-C Board (p163) Network Board Main Board (p155) Relays the connection between the Main Board (p152) Communicates across a network Assy and electric parts/components. See “ Communicates with the computer. Connection Diagram” (p434) for specific Processes received data.
  • Page 106 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A APG Sensor (p180) Detects the origin position of the platen gap. (p171) CR Scale Ink Mark Sensor (p173) The sensor for the following functions. Auto Bi-D adjustment (pattern reading) Auto Uni-D adjustment (pattern reading)
  • Page 107 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A (p188) PE Sensor (p192) Paper Thickness Sensor1, 2 2nd PE Sensor (p195) Detects paper fed from the Paper Cassette Detects paper fed from the or the Roll Unit. Detects the thickness of paper Paper Cassette.
  • Page 108 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A (p204) Pickup Roller (p202) ASF Motor Assy (p209) Retard Roller Rotates the Feed Roller to Separates paper fed from the cassette. feed paper in the cassette. (p203) ASF Sub Motor Assy Functions as follows: 1.
  • Page 109 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Roll Sensor Functions as follows: 1. Detects the top/bottom ends of roll paper. (p222) 2. Detects the presence of roll paper. Roll Feeding Sensor Detects the pressing/separation status of the Roll Feeding Roller.
  • Page 110 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A (p228) Cutter Unit (p224) Cutter Motor Assy Drives the Cutter. A DC motor with an encoder scale mounted on it is employed. Cutter HP Sensor (p226) Detects the origin position of the Cutter.
  • Page 111 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A (p247) Ink Tubes (p253) Left Holder FFC Full (Left) Side Cartridge Holder (p242) (p249) Head FFC (p252) Right Holder FFC (p245) Maintenance box 1 Holder (p239) Home (Right) Side Cartridge Holder...
  • Page 112 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A (p232) Printhead (p236) Wiper (p237) Wiper Cleaner Cleans the nozzle surface of Removes ink attached on the Printhead. the Wiper. Ink Selector Assy (p229) Switches Photo Black and Mat Black. Including a...
  • Page 113 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A (p257) Upper Cover Color Measurement Device (p255) (p139) Right Cover (p271) The device to measure the CR HP Sensor color of printed result Detects the origin position of automatically. the carriage mounting the Color Measurement Device.

  • Page 114: Disassembly Flowchart

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.3 Disassembly Flowchart CONSUMABLES/ACCESSORIES Start See “3.4.1.1 Unlocking the CR See “3.4.1.6 Maintenance Box2 See “3.4.1.4 Cutter Replacement See “3.4.1.5 Maintenance box 1 See “3.4.1.7 Ink Cartridge See “3.4.1.9 Mounter (p132)”...

  • Page 115: Electric Circuit Components

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A ELECTRIC CIRCUIT COMPONENTS Start See “3.4.2.8 Front Cover (p142)” See “3.4.1.2 Roll Unit (p125)” See “3.4.2.11 Rear Unit (p145)” See “3.4.2.5 Right Upper Cover See “3.4.2.17 Left Roll Cover/ See “3.4.2.10 Rear Cover (p144)”...

  • Page 116: Carriage Mechanism

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A CARRIAGE MECHANISM Start See “3.4.2.9 Front Cover Sensor (p143)” See “3.4.2.5 Right Upper Cover (p138)” See “3.4.2.3 Control Panel Cover (p136)” See “3.4.2.6 Right Cover (p139)” See “3.4.1.1 Unlocking the CR See “3.4.4.6 APG Motor Assy...

  • Page 117: Paper Feed Mechanism

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A PAPER FEED MECHANISM Start See “3.4.2.8 Front Cover (p142)” See “3.4.2.4 Left Cover (p137)” See “3.4.2.5 Right Upper Cover See “3.4.2.10 Rear Cover (p144)” See “3.4.5.3 PF Scale (p184)” See “3.4.5.4 PF Belt (p185)”...

  • Page 118: Asf Unit

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A ASF UNIT Start See “3.4.2.8 Front Cover (p142)” See “3.4.2.11 Rear Unit (p145)” See “3.4.6.3 Pickup Roller (p204)” See “3.4.2.5 Right Upper Cover See “3.4.2.10 Rear Cover (p144)” See “3.4.2.10 Rear Cover (p144)”...
  • Page 119 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A ROLL UNIT Start See “3.4.1.2 Roll Unit (p125)” See “3.4.2.17 Left Roll Cover/ See “3.4.2.8 Front Cover (p142)” Right Roll Cover (p151)” See “3.4.2.5 Right Upper Cover See “3.4.3.8 SUB-D Board See “3.4.7.6 Roll Feeding Sensor...

  • Page 120: Cutter Unit

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A CUTTER UNIT Start See “3.4.2.8 Front Cover (p142)” See “3.4.8.1 Cutter Cover (p223)” See “3.4.2.5 Right Upper Cover (p138)” See “3.4.2.3 Control Panel Cover (p136)” 左のみ See “3.4.2.6 Right Cover (p139)”...

  • Page 121: Ink System Mechanism

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A INK SYSTEM MECHANISM Start See “3.4.2.8 Front Cover (p142)” See “3.4.2.5 Right Upper Cover (p138)” See “3.4.2.3 Control Panel Cover (p136)” See “3.4.2.6 Right Cover (p139)” See “3.4.1.1 Unlocking the CR 左のみ...
  • Page 122 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A SPECTROPROOFER Start See “3.4.10.1 Color Measurement Device (p255)” See “3.4.1.9 Mounter (p132)” See “3.4.10.2 Backing/ See “3.4.11.2 I/F Cover See “3.4.11.3 Right Cover See “3.4.11.5 Front See “3.4.11.1 Upper See “3.4.12.7 Backing Sensor White calibration tile holder (p258)”...

  • Page 123: Disassembly And Assembly Procedure

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4 Disassembly and Assembly Procedure Manual Remove the Front Cover. (p142) This section describes procedures for disassembling the components allowed to be Remove the Right Upper Cover. (p138) disassembled. Unless otherwise specified, disassembled units or components can be reassembled by reversing the disassembly procedure.
  • Page 124 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.1.2 Roll Unit - Rear side - Make sure the printer is off before unplugging the roll unit. Disconnect the connector of the Roll Unit from the main body. Bearing Bearing Remove the two screws that secure the Roll Unit.
  • Page 125 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.1.3 Paper Cassette Remove the Paper Eject Tray. Paper Eject Tray Figure 3-15. Removing the Paper Eject Tray Pull out the Paper Cassette by holding both sides. Paper Cassette Figure 3-16. Removing the Paper Cassette DISASSEMBLY &...
  • Page 126 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.1.4 Cutter Replacement Set the positioning holes of the new cutter to the bosses of the main body. When removing the cutter, be careful not to drop it. C A U T I O N...
  • Page 127 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.1.5 Maintenance box 1 Open the Right Cartridge Cover. Pull out the Maintenance box 1. Maintenance box 1 Figure 3-19. Removing the Maintenance box 1 DISASSEMBLY & ASSEMBLY Disassembly and Assembly Procedure...
  • Page 128 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.1.6 Maintenance Box2 Pull out the Maintenance Box2. Remove the Paper Eject Tray. Maintenance Box2 Paper Eject Tray Figure 3-20. Removing the Paper Eject Tray Figure 3-22. Removing the Maintenance Box2 Release the lock of the Maintenance Box2.
  • Page 129 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.1.7 Ink Cartridge Replacement Take the ink cartridge out of the bag, and shake it horizontally for 15 times. Turn the printer ON. Open the IC Cover (Cartridge Cover). Push the ink cartridge to remove it.
  • Page 130 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.1.8 Spindle Remove the roll paper from the spindle by removing the flange. Turn the printer ON. Flange Open the Roll Paper Cover. Push the paper set button, and release the Paper Presser.
  • Page 131 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.1.9 Mounter Open the I/F Cover, and disconnect the USB connector. USB connector I/F Cover Figure 3-27. Disconnecting the USB connector Remove the Mounter. Mounter Figure 3-28. Removing the Mounter DISASSEMBLY & ASSEMBLY...

  • Page 132: Housing

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2 Housing SHAFT,COVER,PRINTER,LEFT SHAFT,COVER,PRINTER,RIGHT 3.4.2.1 Printer Cover Remove the Front Cover. (p142) Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the Right Cover. (p139) Remove the Left Cover.
  • Page 133 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.2 Printer Cover Sensor Remove the Front Cover. (p142) Step8 Step7 Dowel Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the Right Cover. (p139) Remove the Left Cover.
  • Page 134 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A When installing the upper front cover, be careful of the following. First attach the cover into the cut on the right of the main Sensor Cover frame, then reassemble the cover in the reverse order of the disassembling procedure.
  • Page 135 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.3 Control Panel Cover Release the FFC from the clamp, and disconnect the FFC from the connector of the Control Panel Board. Remove the Front Cover. (p142) Peel off the tape.
  • Page 136 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.4 Left Cover - Left side - Remove the Front Cover. (p142) Open the Printer Cover. Remove the five screws that secure the Left Cover. A) Silver, Phillips, Bind S-tite with S.W & P.W. M4x10: five pieces Remove the Left Cover.
  • Page 137 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.5 Right Upper Cover Tabs Open the Printer Cover. Dowel Remove the screw that secures the Right Upper Cover. A) Silver, Phillips, Bind S-tite with S.W & P.W. M4x10: one piece Lift the left side of the Right Upper Cover, and release the two dowels (1 and 2) and the hook (3).
  • Page 138 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.6 Right Cover Remove the Front Cover. (p142) Hook Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the four screws that secure the Right Cover. A) Silver, Phillips, Bind S-tite with S.W & P.W. M4x10: four pieces Pull up and disengage the hook of the Right Cover, and remove the Right Cover.
  • Page 139 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.7 Left IC Cover Frame/Right IC Cover Frame/ Open the Right IC Cover. Left IC Sensor/Right IC Sensor Disconnect the connector of the Right IC Sensor, and release the harness from the cable guides.
  • Page 140 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Remove the four screws that secure the Right IC Cover Frame, and remove the Right IC Cover Frame. Right IC Cover Frame A) Silver, Phillips, Bind P-tite M3x8: four pieces Hooks...
  • Page 141 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.8 Front Cover Remove the four screws that secure the Front Cover. A) Silver, Phillips, Round Washer Head S-tite M3x8: two pieces Open the IC cover R, IC cover L, and Printer Cover.
  • Page 142 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.9 Front Cover Sensor Remove the Front Cover. (p142) Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the Right Cover. (p139) Remove the Left Cover. (p137) Remove the upper front cover and the Sensor Cover.
  • Page 143 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.10 Rear Cover Remove the seven screws that secure the Rear Cover. A) Silver, Phillips, Bind S-tite with S.W & P.W. M4x10: seven pieces Remove the Rear Cover. When installing the Rear Cover, be careful not to let the harnesses get caught.
  • Page 144 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.11 Rear Unit Push the handles inward, and remove the Rear Unit. Handles Rear Unit Figure 3-44. Removing the Rear Unit DISASSEMBLY & ASSEMBLY Disassembly and Assembly Procedure Confidential...
  • Page 145 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.12 Rear Unit Sensor Remove the screw that secures the sensor holder. A) Silver, Phillips, Bind P-tite M3x8: one piece Remove the Front Cover. (p142) Slide the sensor holder in the direction of the arrow to release the two hooks, and Remove the Left Cover.
  • Page 146 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.13 Board Tray Disconnect all connectors and FFCs on the Main Board, and remove the Board Tray. Remove the Rear Unit. (p145) Be extremely careful not to insert FFCs at an angle in connectors.
  • Page 147 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.14 Media Eject Cover Media Eject Cover Remove the Front Cover. (p142) Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the Right Cover. (p139) Remove the Left Cover.
  • Page 148 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.15 CR Cover Remove the Front Cover. (p142) CR Cover Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the Right Cover. (p139) If you do repair work on the Platen, the Printhead may get C A U T I O N damaged.
  • Page 149 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.16 Mid-Right Cover/Mid-Left Cover Mid-Right Cover Basically you can remove this part on the left and the one on the C H E C K right in the same way. Therefore this section describes the way to P O I N T remove the one on the right only.
  • Page 150 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.2.17 Left Roll Cover/Right Roll Cover Right Roll Cover Left Roll Cover Remove the four screws that secure the Right Roll Cover. Remove the three screws that secure the Left Roll Cover.

  • Page 151: Electric Circuit Components

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.3 Electric Circuit Components Screw together Saddles 3.4.3.1 Main Board Cable tie Remove the Rear Unit. (p145) Remove the Rear Cover. (p144) Remove the eight screws, and pull out the Board Tray slightly.
  • Page 152 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Be extremely careful not to insert FFCs at an angle in connectors. The connector number that corresponds to the FFC is written on its C A U T I O N surface as shown below.
  • Page 153 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Be sure to refer to Chapter 4 “Adjustment” (see p277) and perform A D J U S T M E N T R E Q U I R E D specified adjustments after replacing the Main Board.
  • Page 154 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.3.2 Network Board Remove the Rear Unit. (p145) Network Board Remove the Rear Cover. (p144) Pull out the Board Tray. (Step 3 Step 5 in “3.4.2.13 Board Tray” 147)) Disconnect all connectors on the Network Board.
  • Page 155 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Remove the two screws that secure the Cooling Fan, and remove the Cooling Fan. Remove the five screws that secure the Network Board, and remove the Network Board. A) Silver, Phillips, Bind machine screw M3x14: two pieces...
  • Page 156 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.3.3 Power Supply Box - Rear left - Clamps Remove the Front Cover. (p142) Remove the Rear Cover. (p144) SUB-C Board Remove the Left Cover. (p137) Disconnect all the connectors and FFCs on the SUB-C Board.
  • Page 157 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Disconnect the cable connected to the Power Supply Box. Remove the clamp from the Power Supply Box. Power Supply Box Cable Clamp Figure 3-62. Removing the Power Supply Box DISASSEMBLY & ASSEMBLY...
  • Page 158 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.3.4 Power Supply Board When removing the Power Supply Board, do not start the work W A R N I N G immediately after disconnecting the AC cable. Wait for at least five minutes for the electrolytic capacitor to finish discharging residual charges.
  • Page 159 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Disconnect the connector connected to the Power Supply Board. Remove the six screws that secure the Power Supply Board, and remove the Power Supply Board. B) Silver, Phillips, Bind machine screw M3x6: six pieces Be sure to refer to Chapter 4 “Adjustment”...
  • Page 160 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.3.5 SUB Board Remove the two screws that secure the SUB Board, and remove the SUB Board. A) Silver, Phillips, Round Washer Head P-tite M3x8: two pieces Remove the Front Cover.
  • Page 161 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.3.6 SUB-B Board Remove the four screws that secure the SUB-B Board, and remove the SUB-B Board. Remove the Front Cover. (p142) A) Silver, Phillips, Bind machine screw M3x6: four pieces Remove the Right Upper Cover.
  • Page 162 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.3.7 SUB-C Board Remove the four screws that secure the SUB-C Board, and remove the SUB-C Board. Remove the Front Cover. (p142) A) Silver, Phillips, Bind machine screw M3x6: four pieces Remove the Left Cover.
  • Page 163 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.3.8 SUB-D Board Remove the four screws that secure the SUB-D Board, and remove the SUB-D Board. Remove the Right Roll Cover. (p151) A) Silver, Phillips, Bind machine screw M3x6: four pieces Disconnect all the connectors and FFCs on the SUB-D Board.
  • Page 164 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.3.9 AID Board Remove the five screws that secure the AID Board, and remove the AID Board. B) Silver, Phillips, Bind S-tite with S.W & P.W. M3x6: two pieces Remove the Front Cover.
  • Page 165 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.3.10 LED Board Disconnect the FFC on the LED Board, and remove the LED Board. Remove the Front Cover. (p142) Remove the Control Panel Cover. (p136) LED Board Remove the four screws that secure the plate, and remove the plate.
  • Page 166 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.3.11 Control Panel Board Remove the Front Cover. (p142) Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the LED Board. (p166) Disconnect the FFC from the Control Panel Board.

  • Page 167: Carriage Mechanism

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.4 Carriage Mechanism Saddle CR Motor 3.4.4.1 CR Motor Remove the Front Cover. (p142) Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the Right Cover. (p139) Remove the Mid-Right Cover.
  • Page 168 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A When removing the CR Motor in the next step, be careful not to C A U T I O N damage the scale of the APG motor. Saddle Remove the two screws that secure the CR Motor.
  • Page 169 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.4.2 CR Encoder - Rear of Carriage Unit - Remove the Front Cover. (p142) Remove the Right Upper Cover. (p138) CR Encoder Remove the Control Panel Cover. (p136) Remove the Right Cover.
  • Page 170 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.4.3 CR Scale Step 8 Step 9 Take extreme care to avoid soiling the CR Scale surfaces with ink C A U T I O N CR scale spring or by touching them with bare hands. In addition, be careful not to...
  • Page 171 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Attach the CR Scale with the marking on the top left corner. - Front left - Marking Make sure to route the CR Scale through the detection part of the CR Encoder Sensor on the rear of the CR Unit.
  • Page 172 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.4.4 Ink Mark Sensor Remove the Front Cover. (p142) Remove the Control Panel Cover. (p136) Sensor cover Remove the Right Upper Cover. (p138) Remove the Right Cover. (p139) Remove the Left Cover.
  • Page 173 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 11. Take out the Ink Mark Sensor from the CR Unit, and disconnect the FFC from the Ink Mark Sensor. Ink Mark Sensor CR Unit Figure 3-83. Removing the Ink Mark Sensor Be sure to refer to Chapter 4 “Adjustment”...
  • Page 174 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.4.5 CR Unit/CR Belt 14. Remove the screw that secures the CR scale mounting plate, and remove the CR scale mounting plate. Remove the Front Cover. (p142) B) Silver, Phillips, Bind P-tite with S.W & P.W. M4x12: one piece Remove the Right Upper Cover.
  • Page 175 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 17. Slide the driven pulley to the left to remove it from the driven pulley holder. When removing the CR Unit in the next step, be careful not to C A U T I O N disengage the slider.
  • Page 176 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 21. Pull up the center of the plate, and disengage the hook. 22. Turn the plate to the position shown in the figure, and remove it. Step 21 Step 22 Plate Plate 23.
  • Page 177 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Be sure to refer to Chapter 4 “Adjustment” (see p277) and perform A D J U S T M E N T R E Q U I R E D specified adjustments after replacing or removing the CR Unit/CR Belt.
  • Page 178 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.4.6 APG Motor Assy APG Motor Assy Connector Remove the Front Cover. (p142) Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the Right Cover. (p139) Disconnect the connector from the APG Motor Assy.
  • Page 179 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.4.7 APG Sensor Disengage the four hooks that secure the APG Sensor, and remove the APG Sensor. Remove the Front Cover. (p142) Remove the Right Upper Cover. (p138) Remove the Control Panel Cover.
  • Page 180 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.4.8 Oil pad holder Disengage the hooks, and remove the oil pad holder on the right. Unlock the CR Unit. (p124) Open the Printer Cover. CR Unit Move the CR Unit to the center.

  • Page 181: Paper Feed Mechanism

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.5 Paper Feed Mechanism 3.4.5.1 PF Motor Remove the Front Cover. (p142) Remove the Left Cover. (p137) Remove the Rear Cover. (p144) Marking Disconnect the connector (CN302) from the SUB-C Board.
  • Page 182 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.5.2 PF Encoder - Left side - Remove the Front Cover. (p142) Remove the Left Cover. (p137) Disconnect the FFC from the PF Encoder. PF Encoder When removing the PF Encoder in the next step, be careful not to C A U T I O N damage the PF Scale.
  • Page 183 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.5.3 PF Scale - Left side - Remove the Front Cover. (p142) Remove the Left Cover. (p137) Remove the PF Scale. The PF Scale cannot be reused once it is removed. Make sure to replace it with a new one.
  • Page 184 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.5.4 PF Belt Remove the Front Cover. (p142) Remove the Left Cover. (p137) Mark the screw positions. Securing the PF Motor at the marked position makes the Marking subsequent tension adjustment easier.
  • Page 185 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.5.5 Suction Fan Remove the Front Cover. (p142) - On platen - Carriage unit Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the Right Cover. (p139) Remove the Left Cover.
  • Page 186 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Remove the two screws that secure the plate, and remove the plate from the Suction Fan. C) Silver, Phillips, Round Washer Head S-tite M3x8: two pieces Be sure to refer to Chapter 4 “Adjustment”...
  • Page 187 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.5.6 PE Sensor “PAPER GUIDE,MANUAL FEED” Remove the Front Cover. (p142) Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the Right Cover. (p139) Remove the Mid-Right Cover/Mid-Left Cover.
  • Page 188 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 15. Disengage the two hooks, and remove the actuator of the Paper Thickness Sensor. 18. Remove the four screws that secure the release shaft holder. 16. Disconnect the two connectors from the Paper Thickness Sensor.
  • Page 189 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 21. Remove the eight torsion springs from the main body frame. 23. Remove the torsion springs. 22. Remove the five screws that secure the “MOUNTING PLATE,PAPER 24. Remove the screw that secures the “PAPER GUIDE,UPPER”.
  • Page 190 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 25. Lift the “PAPER GUIDE,UPPER” to disengage the dowels on the wight and left 28. Disengage the hooks that secure the PE Sensor Cover, and remove the PE Sensor from the main body frame.
  • Page 191 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.5.7 2nd PE Sensor 11. Disconnect the connector from the 2nd PE Sensor. 12. Disengage the hook, and remove the 2nd PE Sensor. Remove the Front Cover. (p142) Remove the Right Upper Cover.
  • Page 192 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.5.8 PW Sensor Remove the Front Cover. (p142) Remove the Right Upper Cover. (p138) Sensor cover Remove the Control Panel Cover. (p136) Remove the Left Cover. (p137) Remove the Right Cover.
  • Page 193 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 14. Remove the PW Sensor from the CR Unit, and disconnect the FFC from the PW Sensor. PW Sensor Figure 3-112. Removing the PW Sensor Be sure to refer to Chapter 4 “Adjustment”...
  • Page 194 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.5.9 Paper Thickness Sensor1, 2 Mark the screw positions. Remove the Front Cover. (p142) Securing the Paper Thickness Sensor at the marked position makes the subsequent position adjustment easier. Remove the Right Upper Cover.
  • Page 195 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A In the next step, make sure to confirm the destination of each cable. C A U T I O N When connecting them again, be sure to restore the original routing.
  • Page 196 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.5.10 Release Motor Assy When removing the Release Motor Assy in the next step, be careful C A U T I O N not to damage the scale. Remove the Front Cover.
  • Page 197 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.5.11 Release Sensor Disengage the hooks that secure the Release Sensor, and remove the Release Sensor. Remove the Front Cover. (p142) Disconnect the connector from the Release Sensor. Remove the Left Cover.
  • Page 198 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.5.12 Edge Release Assy Edge Release Assy + Mounting plate Remove the Front Cover. (p142) Remove the Right Upper Cover. (p138) Connector Remove the Control Panel Cover. (p136) Remove the Right Cover.
  • Page 199 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Remove the two screws that secure the Edge Release Assy, and remove the Edge Release Assy. C) Silver, Phillips, Round Washer Head S-tite M2.6x4 (bit: No.1): two pieces Mounting plate Edge Release Assy Figure 3-121.
  • Page 200 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.5.13 Edge Sensor Remove the Front Cover. (p142) Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the Right Cover. (p139) Remove the IS Unit. (p233) Remove the mounting plate of the Edge Release Assy.

  • Page 201: Asf Unit

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.6 ASF Unit - Rear left - 3.4.6.1 ASF Motor Assy Connector Remove the Front Cover. (p142) Remove the Left Cover. (p137) Remove the Rear Cover. (p144) Disconnect the connector from the ASF Motor Assy.
  • Page 202 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.6.2 ASF Sub Motor Assy Remove the Front Cover. (p142) - Rear right - Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the Right Cover. (p139) Disconnect the connector from the ASF Sub Motor Assy.
  • Page 203 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.6.3 Pickup Roller Turn the bushing in the direction of the arrow by pulling up the handle of the Shaft Bushing Step 1 Step 2 bushing slightly. Handle When installing the bushing to the main frame, align the spring pin with the shape of the hole of the main frame.
  • Page 204 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Disengage the hook, and remove the gear. Remove the Pickup Roller. Pickup Roller Gear Hook Figure 3-126. Removing the Pickup Roller Be sure to refer to Chapter 4 “Adjustment” (see p277)
  • Page 205 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.6.4 Assist Roller Sensor/Retard Roller Sensor/ Pickup Unit Sensor Clamp Remove the Front Cover. (p142) Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the Right Cover.
  • Page 206 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Remove the five screws that secure the plate. 11. Remove the screw that secures the sensor holder. A) Silver, Phillips, Round Washer Head S-tite M3x6: five pieces B) Silver, Phillips, Round Washer Head S-tite M3x8: one piece 10.
  • Page 207 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 13. Disconnect the connectors from the sensors. 14. Disengage the hooks, and remove each sensor. Connectors Assist Roller Sensor Pickup Unit Sensor Retard Roller Sensor Hooks Figure 3-130. Removing the sensors DISASSEMBLY &...
  • Page 208 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.6.5 Retard Roller Remove the “COVER,SHAFT,RETARD,RESET”. Remove the two springs. Remove the Rear Unit. (p145) Pull the “SHAFT,RETARD,RESET” frontward to remove it. Remove the Rear Cover. (p144) Push and disengage the hook that secures the “CAM,ROLLER,ASSIST”.
  • Page 209 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Pull up the “HOLDER,RETARD” as shown in the figure and remove it. 10. Release the “HOLDER,RETARD,ASSIST” from the dowels of the “HOLDER,RETARD”. 11. Remove the Retard Roller from the “HOLDER,RETARD”. “HOLDER,RETARD”...
  • Page 210 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.6.6 Paper Empty Sensor Remove the Front Cover. (p142) Dowels Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Remove the Right Cover. (p139) Remove the Left Cover.
  • Page 211 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 14. Remove the screw that secures the holder, and remove the holder and the lever. 15. Disconnect the connector (CN221) from the SUB-B Board. B) Silver, Phillips, Round Washer Head S-tite M3x8: one piece 16.
  • Page 212 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 17. Remove the three screws that secure the cassette rail. 19. Disengage the hooks that secure the sensor cover, and remove the sensor cover. C) Silver, Phillips, Bind P-tite M3x8: three pieces 18.
  • Page 213 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.6.7 Paper Cassette Sensor Remove the Front Cover. (p142) Remove the Right Upper Cover. (p138) Clamps Remove the Control Panel Cover. (p136) Remove the Right Cover. (p139) Remove the Left Cover.
  • Page 214 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 15. Disconnect the connector from the Paper Cassette Sensor. 16. Disengage the hooks that secure the Paper Cassette Sensor, and remove the Paper Cassette Sensor. Hooks Connector Hooks Paper Cassette Sensor Figure 3-142.

  • Page 215: Roll Unit

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.7 ROLL Unit Disengage the hooks that secure the Roll Unit Sensor, and remove the Roll Unit Sensor. 3.4.7.1 Roll Unit Sensor Disconnect the connector from the Roll Unit Sensor. Remove the Front Cover.
  • Page 216 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.7.2 Roll Lock Sensor Release and lift the roll paper cover. Remove the Right Roll Cover. (p151) Roll paper cover Remove the SUB-D Board. (p164) Release the harnesses from the cable guides.
  • Page 217 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Remove the three screws that secure the “HOLDER,ROLLER,RIGHT”. Release the spring from the hook of the actuator. B) Silver, Phillips, Round Washer Head S-tite M3x8: three pieces 10. Remove the “HOLDER,ROLLER,RIGHT”.
  • Page 218 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.7.3 ATC Motor Assy Remove the retaining ring, and remove the gear. Remove the two screws that secure the ATC Motor Assy, and remove the ATC Remove the Right Roll Cover.
  • Page 219 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.7.4 Roll Feeding Motor Assy Roll Feeding Motor Assy Remove the Right Roll Cover. (p151) Planetary gear Remove the SUB-D Board. (p164) Remove the “HOLDER,ROLLER,RIGHT”. (Step 3 Step 8 in “3.4.7.2 Roll Connector Lock Sensor”...
  • Page 220 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.7.5 Paper Guide Sensor Remove the Front Cover. (p142) Remove the Control Panel Cover. (p136) Remove the Right Upper Cover. (p138) Remove the Right Cover. (p139) Remove the Left Cover. (p137) Remove the Media Eject Cover.
  • Page 221 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.7.6 Roll Feeding Sensor Remove the Right Roll Cover. (p151) Disconnect the connector from the Roll Feeding Sensor. Disengage the hook, and remove the Roll Feeding Sensor. Roll Feeding Sensor Hook Connector Figure 3-153.

  • Page 222: Cutter Unit

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.8 Cutter Unit 3.4.8.1 Cutter Cover Remove the Front Cover. (p142) Open the Cutter Cover. Pull the Cutter Cover in the direction of the arrow to disengage the joint, and remove the Cutter Cover.
  • Page 223 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.8.2 Cutter Motor Assy Remove the Front Cover. (p142) Cutter motor mounting plate Remove the Right Upper Cover. (p138) Remove the Control Panel Cover. (p136) Connector Remove the Right Cover. (p139) Remove the Left Cover.
  • Page 224 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 10. Remove the two screws that secure the Cutter Motor Assy. B) Silver, Phillips, Round Washer Head S-tite M3x5: two pieces 11. Remove the Cutter Motor Assy. Cutter motor mounting plate...
  • Page 225 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.8.3 Cutter HP Sensor 10. Move the cutter to the center. 11. Open the Cutter Cover. Remove the Front Cover. (p142) 12. Remove the screw that secures the cover holder, and remove the cover holder.
  • Page 226 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 13. Remove the screw that secures the Cutter HP Sensor. B) Silver, Phillips, Pan machine screw M1.7x6 (bit: No.1): one piece 14. While pulling out the harness, remove the Cutter HP Sensor.
  • Page 227 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.8.4 Cutter Unit Remove the Front Cover. (p142) Remove the Control Panel Cover. (p136) Connector Remove the Right Upper Cover. (p138) Remove the Right Cover. (p139) Remove the Left Cover. (p137) Remove the Media Eject Cover.

  • Page 228: Ink System Mechanism

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.9 Ink System Mechanism 3.4.9.1 Ink Selector Assy Discharge ink. (p358) Remove the Front Cover. (p142) Remove the Control Panel Cover. (p136) Remove the Right Upper Cover. (p138) Remove the Right Cover.
  • Page 229 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 12. Release the FFC from the three cable holders. 13. Remove the screw that secures the tube holder. B) Silver, Phillips, Round Washer Head P-tite M3x8: one piece When fixing the FFC to the cable holder, be sure to set the upper 14.
  • Page 230 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 15. Remove the four screws that secure the Ink Tube, and remove the Ink Tube. Ink Selector Assy C) Silver, Phillips, Bind machine screw M3x10: four pieces Ink Tube 16. Remove the O-ring from the Ink Selector Assy.
  • Page 231 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.9.2 Printhead Be sure to refer to Chapter 4 “Adjustment” (see p277) and perform A D J U S T M E N T R E Q U I R E D specified adjustments after replacing or removing the Printhead.
  • Page 232 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.9.3 IS Unit Remove the two screws that secure the terminal of the grounding wire, and remove the terminal of the grounding wire. When powering this product, high-voltage current may be applied W A R N I N G B) Silver, Phillips, Bind S-tite with S.W &...
  • Page 233 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Release the harnesses from the four clamps. 11. Remove the screw that secures the plate, and remove the plate. D) Silver, Phillips, Round Washer Head P-tite M3x6: one piece Disconnecting the Waste Ink Tube in the next step may leak ink C A U T I O N 12.
  • Page 234 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 13. Lift the IS Unit. 14. Disconnect the two connectors from the IS Unit. 15. Remove the IS Unit. Be sure to refer to Chapter 4 “Adjustment” (see p277) and perform...
  • Page 235 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.9.4 Wiper Perform “ Wiper and Cap Cleaning & Exchange” (Page 356), and move the Wiper to the position to replace it. Remove the Right Upper Cover. (p138) When removing the Wiper in the following steps, remove it with the C A U T I O N white mounter.
  • Page 236 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.9.5 Wiper Cleaner Perform “ Wiper and Cap Cleaning & Exchange” (Page 356), and move the Wiper to the position to replace. Remove the Right Upper Cover. (p138) Remove the two screws that secure the Wiper Cleaner.
  • Page 237 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.9.6 Head Cap When removing the Head Cap, be careful not to touch the seal C A U T I O N material. Seal material Head Cap Perform “Wiper and Cap Cleaning & Exchange (p356)”, and move the Wiper to...
  • Page 238 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.9.7 Home (Right) Side Cartridge Holder Home (Right) Side Cartridge Holder Discharge ink. (p358) Remove the Front Cover. (p142) Tubes Remove the Control Panel Cover. (p136) Remove the Right Upper Cover.
  • Page 239 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 12. Remove the eight screws that secure the Home (Right) Side Cartridge Holder. - In the Cartridge Holder - A) Silver, Phillips, Round Washer Head S-tite M3x6: eight pieces 13. Slide the Home (Right) Side Cartridge Holder to the right to remove it from the main body.
  • Page 240 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 14. Remove the two screws that secure the Right Ink Tube, and disconnect the Right Right Ink Tube Ink Tube. B) Silver, Phillips, Bind machine screw M3x10: two pieces 15. Remove the O-ring.
  • Page 241 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.9.8 Full (Left) Side Cartridge Holder Tube Discharge ink. (p358) Remove the Front Cover. (p142) Drawer connector Remove the Control Panel Cover. (p136) Remove the Right Upper Cover. (p138) Remove the Right Cover.
  • Page 242 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 13. Remove the eight screws that secure the Full (Left) Side Cartridge Holder. - In the Cartridge Holder - C) Silver, Phillips, Round Washer Head S-tite M3x6: eight pieces 14. Slide the Full (Left) Side Cartridge Holder to the left to remove it from the main body.
  • Page 243 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 15. Remove the two screws that secure the Left Ink Tube, and disconnect the Left Ink Tube. Hooks D) Silver, Phillips, Bind machine screw M3x10: two pieces 16. Remove the O-ring.
  • Page 244 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.9.9 Maintenance box 1 Holder Clamps Remove the Front Cover. (p142) Remove the Control Panel Cover. (p136) Remove the Right Upper Cover. (p138) CN202 Remove the Right Cover. (p139) Remove the Left Cover.
  • Page 245 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 15. Remove the four screws that secure the Maintenance box 1 Holder. A) Silver, Phillips, Bind machine screw M3x10: four pieces 16. Remove the Maintenance box 1 Holder while pulling out the FFC and the Waste Ink Tube.
  • Page 246 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.9.10 Ink Tubes Discharge ink. (p358) Cable holders Remove the Front Cover. (p142) Remove the Control Panel Cover. (p136) Remove the Right Upper Cover. (p138) Remove the Right Cover. (p139) Remove the Left Cover.
  • Page 247 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 14. Remove the four screws that secure the Ink Tubes, and remove the Ink Tubes. Be sure to refer to Chapter 4 “Adjustment” (see p277) and perform A D J U S T M E N T R E Q U I R E D specified adjustments after replacing or removing the Ink Tubes.
  • Page 248 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.9.11 Head FFC 16. Release the Head FFC from the cable guide provided inside the CR Unit. Remove the Front Cover. (p142) Remove the Control Panel Cover. (p136) CN100 Cable guide Remove the Right Upper Cover.
  • Page 249 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 17. Remove the three screws that secure the tube cover. 20. Disengage the hook that secures the FFC cover 1, and slide the FFC cover 1 to the right to remove it.
  • Page 250 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 23. Release the Head FFC from the five clams, and pull it out from the hole of the main frame. 24. Disconnect the Head FFC (CN100) from the Main Board. Head FFC...
  • Page 251 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.9.12 Right Holder FFC Release the Right Holder FFC from the four clamps, and pull it out from the hole of the main body frame. Remove the Front Cover. (p142) 10. Disconnect the Right Holder FFC (CN400) from the Main Board, and remove the Remove the Control Panel Cover.
  • Page 252 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.9.13 Left Holder FFC Remove the Front Cover. (p142) Remove the Left Cover. (p137) Remove the Rear Cover. (p144) Clamp Remove the Mid-Left Cover. (p150) Left Holder FFC Remove the Power Supply Box.
  • Page 253 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.9.14 Decompression Pump Remove the Front Cover. (p142) SUB-C Board Remove the Control Panel Cover. (p136) CN232 Remove the Right Upper Cover. (p138) Remove the Right Cover. (p139) Remove the Rear Cover.

  • Page 254: Color Measurement Device And Backing Replacement

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.10 Color Measurement Device and Backing Lift the Color Measurement Device slightly, and remove it. Replacement 3.4.10.1 Color Measurement Device Do not touch the lens of the Color Measurement Device. C A U T I O N When removing the Color Measurement Device, be careful not to drop it.
  • Page 255 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.10.2 Backing/White calibration tile holder Remove the Mounter. (p132) When removing the Backing, be careful not to drop it. C A U T I O N Remove the Backing and the white calibration tile holder.
  • Page 256 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.11 Housing Open the Upper Cover in the direction of the arrow to release the five dowels, and remove the Upper Cover. 3.4.11.1 Upper Cover Remove the Color Measurement Device. (p255) Dowel Remove the Mounter.
  • Page 257 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.11.2 I/F Cover Remove the Color Measurement Device. (p255) Remove the Mounter. (p132) Open and remove the I/F Cover. I/F Cover Figure 3-198. Removing the I/F Cover DISASSEMBLY & ASSEMBLY Disassembly and Assembly Procedure...
  • Page 258 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.11.3 Right Cover Right Cover Remove the Color Measurement Device. (p255) Remove the Mounter. (p132) Remove the Upper Cover. (p257) In the next step, make sure to confirm which screw is attached to...
  • Page 259 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.11.4 Left Cover Remove the Color Measurement Device. (p255) Remove the Mounter. (p132) Remove the Upper Cover. (p257) Remove the I/F Cover. (p258) In the next step, make sure to confirm which screw is attached to C H E C K which location because various screws are used here.
  • Page 260 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.11.5 Front Cover Bend the Front Cover in the middle, and release the hinges on both sides. Remove the Front Cover. Remove the Color Measurement Device. (p255) Remove the Mounter. (p132) Open the Front Cover slightly, and disengage the joint on the center.
  • Page 261 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.11.6 Magnet Latch In the next step, make sure to confirm which screw is attached to C H E C K which location because various screws are used here. P O I N T Remove the Color Measurement Device.
  • Page 262 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 10. Release the two hooks, and remove the Magnet Latch. Magnet Latch Hooks Figure 3-205. Removing the Magnet Latch DISASSEMBLY & ASSEMBLY Disassembly and Assembly Procedure Confidential...

  • Page 263: Color Measurement Device Parts

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.12 Color Measurement Device Parts If the FFC prevents removing the plate, disconnect the FFC from C H E C K the Main-C Board. P O I N T 3.4.12.1 Main-C Board Remove the Color Measurement Device.

  • Page 264: Epson Stylus Pro 4900/Epson Stylus Pro

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 10. Disconnect all connectors and FFCs on the Main-C Board. One of the connectors is unused. See Figure 3-207. Main-C Board Make sure to connect all connectors and FFCs to the Main-C Board before installing the plate.
  • Page 265 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.12.2 Encoder for paper pressing motor Remove the Color Measurement Device. (p255) Remove the Mounter. (p132) Scale Encoder for paper pressing motor Remove the Upper Cover. (p257) Remove the I/F Cover.
  • Page 266 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.12.3 Thermistor Routing Remove the Color Measurement Device. (p255) Remove the Mounter. (p132) Remove the Upper Cover. (p257) Remove the I/F Cover. (p258) Remove the Left Cover. (p260) Disconnect the connector (CN11) from the Main-C Board.
  • Page 267 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.12.4 Drying Fan When removing the Drying Fan in the next step, be careful not to C A U T I O N damage the Thermistor. Remove the Color Measurement Device.
  • Page 268 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.12.5 Paper Pressing Motor Disconnect the connector (CN18) from the Main-C Board. Release the harness from the three clamps. Remove the Color Measurement Device. (p255) Remove the Mounter. (p132) Be sure to route the harness of the Paper Pressing Motor over the tape.
  • Page 269 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A When removing the screws in the next step, make sure not to touch When installing the Paper Pressing Motor, be careful of the C A U T I O N the carriage shaft since the grease is applied on the carriage shaft.
  • Page 270 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.12.6 CR HP Sensor Remove the Color Measurement Device. (p255) Connector Remove the Mounter. (p132) Remove the Upper Cover. (p257) Hooks Open the Front Cover, and move the carriage to the right.
  • Page 271 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.12.7 Backing Sensor Remove the Color Measurement Device. (p255) Remove the Mounter. (p132) Remove the backing and the white calibration tile. (p256) Main-C Board Remove the Upper Cover. (p257) Open the Front Cover, and move the carriage to the right.
  • Page 272 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Remove the two screws that secure the tile guide. Raise the Mounter so that the Rear Cover comes on the top. A) Silver, Phillips, Round Washer Head S-tite M3x8: two pieces When removing the tile guide, take care in the following.
  • Page 273 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A When installing the tile guide, align the dowels of the tile guide with the positioning holes of the main unit. Tile guide Backing Sensor 11. Release the harness, and disconnect the connector from the Backing Sensor.
  • Page 274 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 3.4.12.8 CR Motor Remove the Color Measurement Device. (p255) Remove the Mounter. (p132) Remove the Upper Cover. (p257) Rear Cover Remove the I/F Cover. (p258) Remove the Right Cover. (p259) Remove the Left Cover.
  • Page 275 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 10. Disconnect the connector (CN19) from the Main-C Board. When installing the CR Motor, be careful of the installation direction referring to Figure 3-221. Make sure that the harness 11. Release the harness from the two clamps.
  • Page 276 C H A P T E R ADJUSTMENT Confidential...
  • Page 277 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.1 Overview This chapter describes the Service Program software utility and the adjustment procedures required after repairing or replacing certain parts. 4.1.1 Precautions Always observe the following cautions whenever making an adjustment on the printer.

  • Page 278: Adjustment Items And The Order By Repaired Part

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.1.2 Adjustment Items and the Order by Repaired Part The following table shows the required adjustments by repaired or replaced part and the order in which the adjustments must be performed.
  • Page 279 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 4-1. Adjustment items and the order by repaired part Execution Use of Class Part/Unit Adjustment Media Page Mode Serviceman √ √ p.315 Initial Ink Charge Flag Mode Serviceman √ p.372...
  • Page 280 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 4-1. Adjustment items and the order by repaired part Execution Use of Class Part/Unit Adjustment Media Page Mode √ √ p.312 Counter reset after replacing the CR Motor Normal Sonic Tension Meter √...
  • Page 281 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 4-1. Adjustment items and the order by repaired part Execution Use of Class Part/Unit Adjustment Media Page Mode √ √ √ p.327 CR Encoder and Scale Check Normal CR Scale √...
  • Page 282 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 4-1. Adjustment items and the order by repaired part Execution Use of Class Part/Unit Adjustment Media Page Mode √ √ √ p.316 FFC Position Check Normal Sonic Tension Meter √...
  • Page 283 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 4-1. Adjustment items and the order by repaired part Execution Use of Class Part/Unit Adjustment Media Page Mode √ √ p.383 Suction Fan Suction Check & Adjustment Normal Adjustment device Serviceman √...
  • Page 284 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 4-1. Adjustment items and the order by repaired part Execution Use of Class Part/Unit Adjustment Media Page Mode √ √ p.312 Counter reset after replacing the Print Head Normal Normal Mode →...
  • Page 285 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 4-1. Adjustment items and the order by repaired part Execution Use of Class Part/Unit Adjustment Media Page Mode Serviceman √ √ √ p.358 Ink Eject and Initial Charge Mode Serviceman √...
  • Page 286 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 4-1. Adjustment items and the order by repaired part Execution Use of Class Part/Unit Adjustment Media Page Mode Serviceman √ √ √ p.358 Ink Eject and Initial Charge Mode Serviceman √...
  • Page 287 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 4-1. Adjustment items and the order by repaired part Execution Use of Class Part/Unit Adjustment Media Page Mode √ √ √ p.401 SpectroProofer Sensor Spectroproofer Sensor Check Normal SpectroProofer Drying √...

  • Page 288: Description Of Adjustments

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.1.3 Description of Adjustments The following table describes the general outline of the adjustments. Note : The meanings of abbreviations in the “Tool” column are as follows. SP = Service Program SM = Serviceman Mode MECH = Mechanical Adjustment can be performed.
  • Page 289 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Tool Class Adjustment Items General Overview Symptom Page MECH When the PG heights on the right and left of the Head are out of the standard value, the following symptoms may occur.
  • Page 290 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Tool Class Adjustment Items General Overview Symptom Page MECH Execute the calibration of the active damper from the Service Program. Active Damper * Active damper is a function to reduce the carriage The motor vibration/carriage vibration may not √...
  • Page 291 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Tool Class Adjustment Items General Overview Symptom Page MECH When the cleaning is not executed, the following symptoms may occur. Nozzle clogging is not solved and the printing cannot be executed properly.
  • Page 292 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Tool Class Adjustment Items General Overview Symptom Page MECH Move the parts to the maintenance position to maintain the If the part is not moved to the correct position Wiper and Cap √...
  • Page 293 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Tool Class Adjustment Items General Overview Symptom Page MECH When the tension is out of the standard value, the following symptoms may occur. Belt tension is high: The life of the belt will be shortened.
  • Page 294 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Tool Class Adjustment Items General Overview Symptom Page MECH Adjust the paper feeding amount by the outer diameter size of the drive roller and the paper sliding amount which differ depending on the printer.
  • Page 295 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Tool Class Adjustment Items General Overview Symptom Page MECH When the tension is out of the standard value, the following symptoms may occur. Belt tension is high: The load gets higher, and the cutting speed gets slower.
  • Page 296 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Tool Class Adjustment Items General Overview Symptom Page MECH Check the current setting of the RTC and the USB ID If the adjustment is not executed, a maintenance RTC & USB ID Check √...
  • Page 297 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Tool Class Adjustment Items General Overview Symptom Page MECH If the adjustment is not executed, the following symptoms may occur since the heating value For the CR Motor, PF Motor, and ink system unit motor,...

  • Page 298: Tools/Consumables For Adjustments

    Use 0.5 mm tool of Epson Stylus Pro 7400. Paper Thickness Sensor Position Adjustment Paper Thickness Position Tool 1282355 Use 0.4 mm and 0.8 mm tools of Epson Stylus Pro 4400. 1543007 PG Height Adjustment Jig 1.55 1507506 PG Height Adjustment Jig 1.65 PG Height Check &...
  • Page 299 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Software Tools Table 4-3. Software tools Software Name Part Number Target Adjustment Remarks Service Program for Epson Stylus Pro 4900/ Supplies Overall adjustment items Be sure to use the latest version of the Service Program.

  • Page 300: Service Program Basic Operations

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.1.5 Service Program Basic Operations This section describes the basic operations of the Service Program. Save the Service Program on the desktop or directly under the C C A U T I O N drive.

  • Page 301: Nv-Ram Backup Utility/Nvram Viewer

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.2 NV-RAM BACKUP UTILITY/NVRAM 4.2.2 NVRAM Write Procedure Viewer Turn the printer ON in the Serviceman Mode. Turn the power ON while pressing [Menu ] + [Paper Feed ] + [OK].

  • Page 302: Nvram Viewer Basic Operation

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.2.3 NVRAM Viewer Basic Operation DESCRIPTION The following functions are provided. Life Parts Operation History Displays the Life Parts Operation History Displays the history how the printer has been used (Utilization History)
  • Page 303 Displays the current value per item. History Type NVRAM. Current Value Service Calls Errors Displays EPSON Genuine Ink and Non-Genuine Ink per slot Displays the time stamps of the last six normal errors. 3 Total Ink Used Items History Time Stamp (color).

  • Page 304: Adjustments (Individual)

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.3 ADJUSTMENTS (Individual) This mode executes the adjustment required for the repair individually. PROCEDURE Click [ADJUSTMENTS (Individual)] from the main menu. Select the adjustment item that you want to execute and click [OK].

  • Page 305: Adjustments (Sequence)

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.4 ADJUSTMENTS (Sequence) This mode displays the required adjustments per removed part and executes the adjustments in order. PROCEDURE Click [ADJUSTMENTS (Sequence)] from the main menu. Select the name of the removed part and click [OK].

  • Page 306: Installing Firmware

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.5 Installing Firmware The execution method differs depending on the type of firmware to C H E C K P O I N T be installed. This section explains how to update the firmware. The firmware of this printer is Main firmware: written in the Flash ROM on the Main Board.
  • Page 307 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A The F/W version of the SpectroProofer is displayed only when the C A U T I O N SpectroProofer is connected to the printer. Click [Browse] of the [F/W Update] list to select the firmware data to be installed.

  • Page 308: Image & Test Print

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.6 Image & Test Print When printing the print quality test pattern The status of each adjustment can be checked by printing this C H E C K The following functions are provided.
  • Page 309 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Check the print quality test pattern 2 Adjustment pattern for PF direction head slant (See Figure 4-11) Check the pattern if the margin between the blocks become parallel. If they are not in parallel, execute PF Direction Head Slant Adjustment 339).
  • Page 310 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Adjustment pattern for head slant Check the pattern if the five lines are not overlapping or separating. If they are overlapping or separating, check the other four sets. If none of the set is OK, reinstall the Printhead 232).

  • Page 311: Counter Reset

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.7 Counter Reset Table 4-5. Clear Counter Menu List Replaced Part/Unit Clear Menu Name Whenever the parts/units which have life counter are replaced, the corresponding life PF Motor PF Motor Counter counter must be reset.
  • Page 312 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 4-5. Clear Counter Menu List Replaced Part/Unit Clear Menu Name CR Motor SpectroProofer CR Motor Counter SpectroProofer Paper Pressing Motor Paper Pressing Motor Counter The history of the Counter Clear can be checked per counter on the...

  • Page 313: References

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.8 References The following functions are provided. Displays the panel menu of the Normal Mode (PDF file) Displays the panel menu of the Serviceman Mode (PDF file) Displays the circuit block diagram and the parts connection diagram (PDF...

  • Page 314: Initial Ink Charge Flag

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.9 Initial Ink Charge Flag PROCEDURE Turn the printer ON in the Serviceman Mode. Turn the power ON while pressing [Menu ] + [Paper Feed ] + [OK]. Start the Service Program and select [Initial Ink Charge Flag].

  • Page 315: Cr Related Check & Adjustments

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.10 CR Related Check & Adjustments Head FFC Folding adjustment position 4.10.1 FFC Position Check 4.10.1.1 FFC Position Check after replacing the Head FFC EXECUTION MODE Normal Mode PROCEDURE Turn the printer ON.
  • Page 316 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.10.1.2 FFC Position Check after replacing the tube CHECK 1 Move the CR Unit to the position shown in Figure 4-21. EXECUTION MODE Check that the tube holders 1 and 2 are at the following positions. If they are not at the correct positions, adjust the positions.
  • Page 317 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A CHECK 2 10. Tighten the screws of the tube mounting plate. Move the CR Unit to the right end. 11. Install the tube cover, and return to Step Check that the tube holders 3, 4 and 5 are at the following positions. If they 12.

  • Page 318: Cr Belt Adjustment

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.10.2 CR Belt Adjustment Bring the microphone of the Sonic Tension Meter U-507 closer to the center of the belt on the upper side. REQUIRED TOOLS Be sure to measure the tension of the belt on the upper side. If...
  • Page 319 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 13. Loosen the three screws that secure the driven pulley holder. 14. Adjust the belt tension with the adjusting screw that secures the “HOLDER,PULLEY,CR,SUPPORT”. Upper timing belt After adjusting the tension, tighten the screws loosened in...

  • Page 320: Pg Height Check & Adjustment

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.10.3 PG Height Check & Adjustment Mark on top REQUIRED TOOLS PG Height Adjustment Jig STANDARD VALUE 1.55 pass 1.65 stop EXECUTION MODE Normal Mode PROCEDURE Figure 4-26. Check position of the cam PG place Turn the printer ON.
  • Page 321 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A <Checks and adjustments on the Home side of the Platen> CR Unit Move the CR Unit to the Home side. When moving the CR Unit, make sure to pull the CR Belt to move...
  • Page 322 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Move the CR Unit slowly over the thickness gauge. 12. Place the thickness gauge on the position B as shown in Figure 4-28. The conditions of the Printhead touching the thickness gauge can Align the edge to the position where the edge of A was placed.
  • Page 323 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 14. Check if the height of the CR Unit is within the standard value. <Checks and adjustments on the Full side of the Platen> 16. Move the CR Unit to the Home side.
  • Page 324 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 22. Check if the CR Unit stops at 1.75. Stop at 1.75: Go to Step 23 Not stop at 1.75: Return to Step 7 23. Remove the thickness gauge. 24. Install the CR Cover.

  • Page 325: Apg Check

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.10.4 APG Check <Reference> Origin of EXECUTION MODE Value of PG Normal Mode PROCEDURE Turn the printer ON. Start the Service Program and select Check. Click [OK]. PG-- appears on the screen of the service program.

  • Page 326: Cr Encoder And Scale Check

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.10.5 CR Encoder and Scale Check EXECUTION MODE Normal Mode PROCEDURE CR Scale Open the Printer Cover. CR Encoder Turn the printer ON. Start the Service Program and press the [F11] key.

  • Page 327: Cr Speed Initialize

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.10.6 CR Speed Initialize EXECUTION MODE Normal Mode PROCEDURE Turn the printer ON. Start the Service Program and select CR Speed Initialize. Click [Run]. Adjustment Successful appears, click [OK]. Click [Finish].

  • Page 328: Active Damper Adjustment

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.10.7 Active Damper Adjustment EXECUTION MODE Normal Mode PROCEDURE When any paper is loaded, remove it. Turn the printer ON. Start the Service Program and select Active Damper Adjustment. Click [Run] to execute the calibration of the CR active damper.

  • Page 329: Ink Mark Sensor Check & Adjustment

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.10.8 Ink Mark Sensor Check & Adjustment PAPER USED Size: Type: Archival Matte Paper EXECUTION MODE Normal Mode PROCEDURE Load three or more sheets of paper in the paper cassette. Turn the printer ON.
  • Page 330 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Check A/D : <a1> D/A : <a2> ( 190 < A/D < 245, D/A > 0 ) <OK> 12 Dm: -9 Dm’: <OK! Go to next work.> Model Name: xxxxxxxxxxxxxxxxx M/C No. : xxxxxxxxxxxxxxxxx ,RTC: XX XX XX XX XX XX , XX : XX...

  • Page 331: Head Related Checks And Adjustments

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.11 Head Related Checks and Adjustments 4.11.1 Head ID Check & Input EXECUTION MODE Normal Mode PROCEDURE Write down the Head Rank ID (QR code) from the ID label attached on the new Printhead if replacing the Printhead.
  • Page 332 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Click [Write]. Click [Finish]. Turn the printer OFF. Make sure to turn off the printer after clicking the [Finish] button. C A U T I O N The setting of Head Rank ID becomes valid after the printer is restarted.

  • Page 333: Nozzle Check

    The nozzle check pattern can be printed from the utilities on the C H E C K P O I N T printer driver. For Mac OS X, use Epson Printer Utility4. Figure 4-40. Nozzle check pattern ADJUSTMENT Head Related Checks and Adjustments...

  • Page 334: Cleaning

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.11.3 Cleaning EXECUTION MODE Normal Mode PROCEDURE Ink consumption is reduced by executing CL2 instead of Initial C H E C K P O I N T Charge after replacing the Printhead.

  • Page 335: Cr & Pf Direction Head Slant Adjustment

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.11.4 CR & PF Direction Head Slant Adjustment Model Name : Epson Stylus Pro XXXX ,F/W Version : XXXXXXX M/C No. : XXXXXXXXXXXXXXXXX ,RTC : XXXXXXXXXXXX ,Bk : Xx Head-ID : XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX USB-ID : XXXXXXXXXXXXXXXXXX 4.11.4.1 CR Direction Head Slant Adjustment...
  • Page 336 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Press the [F11] key. 11. Turn the adjustment dial to adjust the slant of the Printhead. The lock of the CR Unit is released. See the following for the direction of rotation.
  • Page 337 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 12. Tighten the three screws loosened in Step 10 in the inverse order shown in Figure 4-44. 13. Install the CR Cover. 14. Close the Front Cover. 15. Print the adjustment pattern again and check the adjustment result.
  • Page 338 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.11.4.2 PF Direction Head Slant Adjustment PAPER USED A = B Size: 16 inches C = D Type: Premium Glossy Photo Paper (250) EXECUTION MODE Normal Mode A = B PROCEDURE C = D Turn the printer ON.
  • Page 339 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Start the Service Program and press the [F11] key. The lock of the CR Unit is released. Open the Printer Cover. Head tilt lever Remove the Right Upper Cover. (P. 138)

  • Page 340: Auto Bi-D Adjustment

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.11.5 Auto Bi-D Adjustment PAPER USED Size: 16 inches Type: Premium Glossy Photo Paper (250) EXECUTION MODE Normal Mode PROCEDURE Figure 4-49. Adjustment Pattern Turn the printer ON. Start the Service Program and select Auto Bi-D Adjustment.

  • Page 341: Colorimetric Calibration (Color Id With Spectroproofer

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.11.6 Colorimetric Calibration (Color ID) with SpectroProofer 4.11.6.1 Adjustment Overview This adjustment is required when the user asks to reduce the color gap between the printers after replacing any of the following parts.
  • Page 342 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.11.6.2 Adjusting Method ADJUSTMENT WORKFLOW REQUIRED TOOLS The workflow of the adjustment is explained in this section. Table 4-7. Tools Required START Tool Application/Specification Plain Paper (A4) For nozzle check EPSON Enhanced (Archival) Matte...
  • Page 343 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A ADJUSTMENT PROCEDURE Turn the printer power on. Start the Service Program, and select [Colorimetric Calibration Tool]. Click [Run] to start the “Colorimetric Calibration Tool”. Select the printer model. When several drivers are installed for one printer, check that the...
  • Page 344 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Load an A4-sized paper vertically on the paper tray, click [Next] to start the nozzle check. Check the nozzle pattern. If there is any defect, execute the cleaning using the Control Panel of the printer.
  • Page 345 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Make sure there is no missing dots in the nozzle check pattern at the bottom of the White Plate calibration chart. If there are missing dots, click [Print Calibration Chart Again]. The calibration chart will be printed again after performing cleaning.
  • Page 346 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Figure 4-54. Screen ADJUSTMENT Head Related Checks and Adjustments Confidential...
  • Page 347 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 14. Make sure that the date and time printed in the second line on the upper left of the chart (measurable time and date) is within the range displayed under the heading “GMT”...
  • Page 348 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 16. Click [OK] and follow the instructions (following procedure) displayed on the When measuring colors, pay attention to the instructions below. C A U T I O N screen to perform color measuring.
  • Page 349 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A If measuring color fails, you should turn the chart 90 degrees (so C A U T I O N that the nozzle check pattern comes on the right) and move the calibrator from front to rear.
  • Page 350 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 18. Make sure that the “READY” message is displayed on the printer LCD panel, and click [Next] to turn OFF and reboot the printer automatically and write the “Color ID” to the printer main unit.
  • Page 351 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 20. Load an A4-sized Archival Matte Paper vertically on the paper tray, and click [Next] to print the first page of the verify chart. Make sure to leave the adjustment chart for 5 minutes to dry it out.
  • Page 352 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 26. Make sure that the date and time printed in the second line on the upper left of the chart (measurable time and date) is within the range displayed under the heading...
  • Page 353 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 28. Click [OK] and follow the instructions (following procedure) displayed on the screen to perform color measuring. Set the calibrator with its measuring part matched with measuring start position (gray part) as shown in Figure 4-58.
  • Page 354 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 31. Click [Save] to save the result under a new file name (txt file). 32. Click [End]. Figure 4-68. Entire Process Screen ADJUSTMENT Head Related Checks and Adjustments Confidential...

  • Page 355: Ink Supply Related Checks And Adjustments

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.12 Ink Supply Related Checks and Adjustments 4.12.1 Wiper and Cap Cleaning & Exchange EXECUTION MODE Normal Mode PROCEDURE Turn the printer ON. Start the Service Program and select Wiper and Cap Cleaning &...

  • Page 356: Maintenance Box Remaining Space Check

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.12.2 Maintenance Box Remaining Space Check EXECUTION MODE Normal Mode PROCEDURE Turn the printer ON. Start the Service Program and select Maintenance Box Remaining Space Check. Click [Run]. The free space of the maintenance tanks is indicated.

  • Page 357: Ink Eject And Initial Charge

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.12.3 Ink Eject and Initial Charge 4.12.3.1 Ink Eject EXECUTION MODE Serviceman Mode PROCEDURE Required time per Ink Eject (all rows): 7 minutes C H E C K P O I N T Turn the printer ON in the Serviceman Mode.
  • Page 358 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.12.3.2 Ink Charge EXECUTION MODE Serviceman Mode PROCEDURE Required time per Initial Charge (all rows): 16 minutes C H E C K P O I N T Turn the printer ON in the Serviceman Mode.

  • Page 359: Ink Selector Movement Check

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.12.4 Ink Selector Movement Check EXECUTION MODE Normal Mode PROCEDURE When executing this procedure, be sure to discharge ink in advance C A U T I O N following the procedure in “4.12.3.1 Ink Eject...

  • Page 360: Ils & Csic Check

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.12.5 ILS & CSIC Check Click [Finish]. Turn the printer OFF and finish the adjustment. 4.12.5.1 ILS Check EXECUTION MODE Serviceman Mode PROCEDURE Perform this check when the ink amount displayed on the LCD of...
  • Page 361 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.12.5.2 CSIC Check Turn the printer OFF and finish the adjustment. EXECUTION MODE Serviceman Mode PROCEDURE Perform this check only when the trouble of recognizing ink C H E C K P O I N T amount occurs.

  • Page 362: Tubes Cleaning (And Ink Charge Per Two Rows)

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.12.6 Tubes Cleaning (and Ink Charge per Two Rows) Click [OK]. The tube is cleaned. 4.12.6.1 Tubes Cleaning Remove all the ink cartridges, and install the cleaning cartridge into the slot to clean.
  • Page 363 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.12.6.2 Ink Charge EXECUTION MODE Normal Mode PROCEDURE Required time per ink charge (all rows): 16 minutes C H E C K P O I N T Turn the printer ON.

  • Page 364: Leak Check (Visually)

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.12.7 Leak Check (visually) EXECUTION MODE Serviceman Mode PROCEDURE Make sure to perform this adjustment before charging ink. C A U T I O N Turn the printer ON in the Serviceman Mode.

  • Page 365: Media Feed Related Checks And Adjustments

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.13 Media Feed Related Checks and Adjustments Bring the microphone within 5 mm from the timing belt but do not C H E C K P O I N T let it touch the belt.
  • Page 366 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Press [MEASURE] on the Sonic Tension Meter U-507, and flip the timing belt in the direction of the arrow shown in Figure 4-77 with tweezers or a similar tool. Flip the timing belt as weak as the Sonic Tension Meter U-507 C A U T I O N can measure it.

  • Page 367: Pf Encoder And Scale Check

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.13.2 PF Encoder and Scale Check 11. Turn the printer OFF to complete the adjustment. EXECUTION MODE Overhead view Normal Mode It is OK if the PF Scale is contacted to the while projection.

  • Page 368: Paper Thickness Sensor Position Adjustment

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.13.3 Paper Thickness Sensor Position Adjustment CHECKING PROCEDURE Remove the following parts in advance. REQUIRED TOOL Front Cover (P. 142) Paper Thickness Position Tool (use the ones 0.4/0.5/0.8 in thickness only.) Right Upper Cover (P.
  • Page 369 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 11. Set the adjustment jig (0.5) to the position shown in Figure 4-79, and press [Paper Set]. Center of the driven roller on the right end 12. Check that “01” is displayed on the Control Panel.
  • Page 370 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A ADJUSTMENT PROCEDURE Paper thickness sensor holder 2 Paper thickness sensor holder 1 Adjust the position of the paper thickness sensor holder 1 when the value of ones place digit differs from the standard value. Adjust the position of the paper thickness sensor holder 2 when the value of tenths place digit differs from the standard value.

  • Page 371: Rear Ad Adjustment

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.13.4 Rear AD Adjustment When executing the following step, do not remove the external C A U T I O N parts to acquire proper AD value. REQUIRED TOOL Standard Sheet (JETRAS JP-D300S) →...

  • Page 372: Media Feed Correction Check & Adjustment

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.13.5 Media Feed Correction Check & Adjustment Select here Not select here PAPER USED Step 5 Size: Type: Archival Matte Paper Bottom EXECUTION MODE -8 (-7) -6 (-5) -4 (-3) -2 (-1) 0 (1) 2 (3) 4 (5) 6 (7) 8...
  • Page 373 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Adjust it by the value of the patches selected from the top and the bottom. The patches selected from the top and the -8 (-7) -6 (-5) -4 (-3) -2 (-1) 0 (1) 2 (3) 4 (5) 6 (7) 8...
  • Page 374 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A PF Adjustment Input Value = -12 Adjusted Value = -12 (99783) -8 (-7) -6 (-5) -4 (-3) -2 (-1) 0 (1) 2 (3) 4 (5) 6 (7) 8 Inspection Program Ver. : XXXXXXXX...

  • Page 375: Media Eject Correction Check & Adjustment

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.13.6 Media Eject Correction Check & Adjustment PAPER USED Size: A4 Type: Archival Matte Paper EXECUTION MODE Normal Mode STANDARD VALUE Within ± 4 PROCEDURE Turn the printer ON. Set paper in the bypass feed unit, and press [Paper Feed ] to feed paper.
  • Page 376 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A (-5) -4 (-3) -2 (-1) Figure 4-87. Adjustment Pattern ADJUSTMENT Media Feed Related Checks and Adjustments Confidential...

  • Page 377: Pw + T&B&S Check & Adjustment

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.13.7 PW + T&B&S Check & Adjustment 4.13.7.2 T&B&S Adjustment 4.13.7.1 PW Adjustment PAPER USED Size: A4 PAPER USED Type: Archival Matte Paper Size: A4 Type: Archival Matte Paper STANDARD VALUE Top margin: 10 ±...
  • Page 378 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Remove paper from the paper cassette, and execute Step 5 by Rear Manual Feed. Within the standard value: Go to Step 9 Out of the range: Go to Step 7 Input the value that is measured in Step 5 and out of the range.

  • Page 379: Cut Position Check & Adjustment

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.13.8 Cut Position Check & Adjustment Turn the printer OFF to complete the adjustment. REQUIRED TOOL Full Center Home Calibrated loupe PAPER USED Paper feeding direction Size: 16 inches Type: Premium Glossy Photo Paper (250) STANDARD VALUE 15 ±...

  • Page 380: Cutter Belt Tension Check

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.13.9 Cutter Belt Tension Check Be sure to measure the tension of the belt on the upper side. If C A U T I O N you measure the tension of the belt on the lower side, the REQUIRED TOOLS measuring value may be inaccurate.
  • Page 381 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Remove the Cutter Unit. (P. 228) Loosen the screw that secures the pulley of the Cutter Unit. Tighten the screw while pulling the belt with whole pulley. 10. Install the Cutter Unit.

  • Page 382: Suction Check & Adjustment

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.13.10 Suction Check & Adjustment PREPARATION Create the following items for the check and adjustment. REQUIRED TOOLS Measurement jig Plastic tube of 3.2 to 3.5 mm inside diameter (Soft and clear tube is recommended.) Put a small amount of water into the plastic tube.
  • Page 383 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Click [Run]. PROCEDURE Measure the rise distance of water surface. Turn the printer ON. Press [Paper Source ] to select sheets. Press [Paper Set] to unlock the paper pressure. Open the Printer Cover.

  • Page 384: Boards Related Checks And Adjustments

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.14 Boards Related Checks and Adjustments 4.14.1 RTC&USB ID EXECUTION MODE Serviceman Mode WRITING RTC&USB ID PROCEDURE Turn the printer ON in the Serviceman Mode. Turn the power ON while pressing [Menu ] + [Paper Feed ] + [OK].

  • Page 385: Serial Number Check & Input

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.14.2 Serial Number Check & Input EXECUTION MODE Serviceman Mode PROCEDURE Turn the printer ON in the Serviceman Mode. Turn the power ON while pressing [Menu ] + [Paper Feed ] + [OK].

  • Page 386: Aid Function Check

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.14.3 AID Function Check Before this check, make sure to perform a nozzle check to confirm C A U T I O N that there is no missing dot 334). PROCEDURE Turn the printer ON.

  • Page 387: Mac Address Check & Input

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.14.4 MAC Address Check & Input Enter the MAC address indicated on the MAC address label attached on the Board Tray, and click [Write]. EXECUTION MODE Click the [Write] button only once. It takes about two and a half...

  • Page 388: Usb Port And Network Communication Check

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.14.5 USB Port and Network Communication Check PROCEDURE Turn the printer ON. Start the Service Program and select USB Communication Check IP Address Communication Check. Enter the IP address of the printer, and click [Run].

  • Page 389: Adjustment Value Reset

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.14.6 Adjustment Value Reset EXECUTION MODE Normal Mode PROCEDURE Turn the printer ON. Start the Service Program and select Adjustment Value Reset. Click [Run]. The adjustment value change history will be reset.

  • Page 390: Default Reset

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.14.7 Default Reset EXECUTION MODE Normal Mode PROCEDURE Turn the printer ON in the Maintenance Mode. Turn the printer ON while pressing [Pause/Cancel]. Select Default Panel and execute it. The setting set with the Control Panel will be reset to the default.

  • Page 391: Operation Panel Check (Buttons & Lcd)

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.14.8 Operation Panel Check (Buttons & LCD) 4.14.8.1 Button Operation Check EXECUTION MODE EXECUTION MODE Normal Mode Serviceman Mode PROCEDURE PROCEDURE Turn the printer ON in the Serviceman Mode. Turn the printer ON in the Serviceman Mode.

  • Page 392: Other Printer Checks And Adjustments

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.15 Other Printer Checks and Adjustments 4.15.1 Motor Measurement Adjustment EXECUTION MODE Normal Mode PROCEDURE Turn the printer ON. Start the Service Program and select Motor Measurement Adjustment. Select the item to execute Motor Measurement Adjustment.

  • Page 393: Sensor Check

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.15.2 Sensor Check Confirmation method per part Click [Run] to switch the Sensor Check screen as follows. This menu checks if the sensor operates normally. Sensor with shading object: 01h Preparation...
  • Page 394 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 4-8. Sensor Check Table 4-8. Sensor Check Confirmation Screen Confirmation Screen Repaired Part Procedure Repaired Part Procedure Display Display 1. Select [Pickup Unit Sensor]. Range of A/D value: 44<n<240 2. Remove the Right Cover.
  • Page 395 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 4-8. Sensor Check Table 4-8. Sensor Check Confirmation Screen Confirmation Screen Repaired Part Procedure Repaired Part Procedure Display Display 1. Select [Retard Roller Sensor]. 1. Select [Eject Star Wheels Position Sensor].
  • Page 396 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 4-8. Sensor Check Table 4-8. Sensor Check Confirmation Screen Confirmation Screen Repaired Part Procedure Repaired Part Procedure Display Display 1. Select [Paper Empty Sensor]. Sensor not Interrupted 1. Select [Front Cover Sensor].
  • Page 397 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Table 4-8. Sensor Check Table 4-8. Sensor Check Confirmation Screen Confirmation Screen Repaired Part Procedure Repaired Part Procedure Display Display 1. Select [Wiper & Cap Sensor 2]. Sensor Interrupted 1. Select [Printer Cover Sensor].

  • Page 398: Encoder Check

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.15.3 Encoder Check This menu checks if the encoder operates normally. Preparation Turn the printer ON. Start the Service Program and select Encoder Check. Refer to the following list and perform the test per repaired part.
  • Page 399 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Repaired Part Procedure Confirmation Method 1. Select [Decompression Pump Encoder]. Confirm that the value of the Decompression Pump displayed on the panel is changed Decompression pump unit by the rotation of the scale of the decompression pump unit.

  • Page 400: Spectroproofer Related Adjustments

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.16 SpectroProofer Related Adjustments Use this to check that each part and function of the SpectroProofer operates properly. 4.16.1 SpectroProofer Sensor Check 4.16.1.1 Backing Sensor Check Remove the Upper Cover of the SpectroProofer.
  • Page 401 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 12. Confirm that [ON] is displayed on the confirmation screen and click [OK]. [ON] is displayed: Go to Step 14 [ON] is NOT displayed: Go to Step 13 13. Check the wiring of the Backing Sensor. If there is no abnormality on the wiring, replace the Backing Sensor 272).
  • Page 402 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.16.1.2 Thermistor Check Remove the Upper Cover of the SpectroProofer. Install the mounter on the printer. Turn the printer ON in the Serviceman Mode. Turn the power ON while pressing [Menu ] + [Paper Feed ] + [OK].

  • Page 403: Spectroproofer Movement Check

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.16.2 SpectroProofer Movement Check 4.16.2.2 CR Function Check Remove the Upper Cover of the SpectroProofer. 4.16.2.1 Fan Function Check Install the mounter on the printer. Remove the Upper Cover of the SpectroProofer.
  • Page 404 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.16.2.3 Paper Press Function Check Install the mounter on the printer. Start the Service Program. Connect the USB cable to the printer. Select SpectroProofer Movement Check from the inspection program. Select Paper Press Function Check.

  • Page 405: Spectroproofer Measurement Precision Check

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.16.3 SpectroProofer Measurement Precision Check CR Direction Color Measurement Check Load paper. PAPER USED Select CR Direction Color Measurement Check. Click [Run]. Size: 16 inches Printing the pattern and calibration are performed automatically and the result...
  • Page 406 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A PF Direction Color Measurement Check Load paper. Select PF Direction Color Measurement Check. Click [Run]. Print the pattern and calibration automatically and the result will be displayed. The result is OK: Go to...

  • Page 407: Spectroproofer Serial Number Check & Input

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 4.16.4 SpectroProofer Serial Number Check & Input Install the mounter on the printer. Turn the printer ON. Start the Service Program. Select SpectroProofer Serial Number Check & Input. Input the serial number of the SpectroProofer.
  • Page 408 C H A P T E R MAINTENANCE Confidential...
  • Page 409 Locate the printer on a stable and flat surface. This chapter provides information on how to maintain the printer in its optimum Epson Stylus Pro 4900/4910 weighs approx. 52kg. When the operating condition. printer needs to be moved, make sure to lift or carry the printer with two or more people, holding the printer by its holding Basically, servicing on the printer should be performed on-site.
  • Page 410 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Do not touch electrical circuit boards with bare hands as the C A U T I O N elements on the board are so sensitive that they can be easily damaged by static electricity. If you have to handle the boards with bare hands, use static electricity discharge equipment such as anti-static wrist straps.

  • Page 411: Setting Up/Storing The Printer

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 5.2 Setting Up/Storing the Printer 5.2.2 Storing the Printer and Cleaning the Ink Path STORING 5.2.1 Setting Up When storing the printer, make sure to leave the ink cartridges installed and place it on Make sure to open up the following installation room for the printer so as to maintain a horizontal surface, and also inform the user on the following cautions.

  • Page 412: Transportation

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 5.3 Transportation SETTING UP THE PRINTER AFTER TRANSPORTATION Make sure that the installation site is proper. Make sure to keep the ink cartridge installed so as to prevent C A U T I O N ink from leaking or the printhead from drying.
  • Page 413 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 5.4 Cleaning CR Unit 5.4.1 Main Unit CHECKING AND CLEANING THE HEAD If the surface of the printed paper is smeared, follow the steps below to make sure the print head surface is clean and has no foreign objects on.
  • Page 414 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A CLEANING THE WIPER/FLUSHING BOX Wet the tip of a cleaning stick with pure water. Flushing Box Step 1 is easier to do with a wet cloth on a plastic wrap C H E C K...
  • Page 415 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A CLEANING BY FEEDING PAPER CLEANING THE PLATEN When dirt on some roller is attached on the printed paper, make sure to clean the soiled If the back of the printed paper is smeared, make sure to clean the platen as follows.
  • Page 416 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A CLEANING THE PLATEN’S SUCKING HOLES If the paper feeding is unstable (if some floating or skewing of the paper can be seen), check the sucking holes on the platen for paper dust clogging there. If there are some clogging, clean the holes as follows.

  • Page 417: Auto Color Measurement Device Mounter

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 5.4.2 Auto Color Measurement Device Mounter CLEANING THE BACKING AND THE WHITE BASE TILE Remove the backing and the white base tile holder. (p256) CLEANING THE COLOR MEASUREMENT DEVICE Remove the white base tile from the holder.
  • Page 418 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Use a soft cloth dampened with a mild detergent to wipe off the dirt. CLEANING THE PAPER PRESSING PLATE Turn off the printer. Open the front cover of the mounter. Move the carriage to the left and lay the paper pressing plate toward you.
  • Page 419 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A CLEANING THE PAPER GUIDE UNIT Paper dust accumulates as the auto cutter in the printer is used. Clean it regularly by following procedure. Remove the mounter. (p132) Remove the paper guide unit.

  • Page 420: Lubrication

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 5.5 Lubrication LUBRICATION This section describes necessary lubrication to maintain the functions and performance of this printer. Make sure to properly lubricate the parts/units specified in this section as necessary when replacing or maintaining them.
  • Page 421 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A LUBRICATION POINTS LIST Lubrication Corresponding Part Lubrication Points Purpose/Timing Name of Lubricant Lubrication Tool Reference Part name:G-71 On the portion where it contacts with FRAME φ 2 mm injector p.424 ASSEMBLY, MIDDLE, RIGHT...
  • Page 422 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A Lubrication Corresponding Part Lubrication Points Purpose/Timing Name of Lubricant Lubrication Tool Reference When an error occurs in CR operation. Part name:G-71 PULLEY, DRIVEN On the shafts where it contacts with HOLDER, PULLEY, φ...
  • Page 423 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A [Lubrication 1-1] [Lubrication 1-2] Part Name Pickup Unit Part Name Pickup Unit On the portion where it contacts with FRAME ASSEMBLY, A: On the portion where it contacts with SPUR GEAR, 76.8,...
  • Page 424 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A [Lubrication 1-3] [Lubrication 2] Part Name Pickup Unit Part Name HOLDER, LEVER, EDGE GUIDE RELEASE Lubrication Point On the bearings of the SHAFT, ROLLER, PICKUP A: On the portion where contacts with HOLDER, LEVER, EDGE...
  • Page 425 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A [Lubrication 3] [Lubrication 4] Part Name HOLDER, SENSOR, RELEASE, ASF UNIT Part Name SHAFT, RELEASE, PAPER GUIDE, UPPER UNIT A: On the portion where it contacts with SPUR GEAR, 76.8, A: On the portion where it contacts with MOUNTING PLATE,...
  • Page 426 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A [Lubrication 5] [Lubrication 6] Part Name PAPER GUIDE, UPPER UNIT Part Name PAPER GUIDE, REAR COVER Lubrication Point On the ribs of CAM, RELEASE, DRIVEN Lubrication Point Bearings of the PAPER GUIDE, REAR...
  • Page 427 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A [Lubrication 7-1] [Lubrication 7-2] Part Name CR Unit Part Name CR Unit Lubrication Point On the shaft which is attached with SUPPORT ROD, SHAFT, CR Lubrication Point Inside HOLDER, OIL PAD...
  • Page 428 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A [Lubrication 7-3] [Lubrication 7-4] Part Name CR Unit Part Name CR Unit Lubrication Point Inside HOLDER, OIL PAD Lubrication Point On the portion where it contacts with GUIDE BOARD, CR Lubricants (Part Code)
  • Page 429 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A [Lubrication 8] [Lubrication 9] Part Name PULLEY, DRIVEN UNIT Part Name PAPER GUIDE, LOWER UNIT Bearings on HOLDER, PULLEY, CR where they contact with the Lubrication Point Two hooks of Shaft Retard Reset...
  • Page 430 C H A P T E R APPENDIX Confidential...

  • Page 431: Block Wiring Diagram

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 6.1 Block Wiring Diagram 6.1.1 Main Body APPENDIX Block Wiring Diagram Confidential...

  • Page 432: Spectroproofer

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 6.1.2 SpectroProofer APPENDIX Block Wiring Diagram Confidential...

  • Page 433: Connection Diagram

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 6.2 Connection Diagram 6.2.2 Electric Circuit Components 1 6.2.1 Housing Power Supply Board SUB-D Board LED Board SUB-C Board HEAD_C Board SUB-C Board Control Panel Board Network Board AID Board Main Board SUB-B Board Cable No.

  • Page 434: Electric Circuit Components 2

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 6.2.3 Electric Circuit Components 2 6.2.4 Carriage Mechanism SUB Board SUB-C Board SUB Board SUB-B Board Main Board SUB-B Board Cable No. Connection Cable No. Connection SUB Board (CN100) Main Board (CN100)

  • Page 435: Paper Feed Mechanism 1

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 6.2.5 Paper Feed Mechanism 1 6.2.6 Paper Feed Mechanism 2 SUB Board SUB-C Board SUB-B Board Cable No. Connection Cable No. Connection Paper Thickness Sensor 2 SUB-B Board (CN209) PF Encoder...
  • Page 436 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 6.2.7 ASF Unit 6.2.8 ROLL Unit SUB-B Board SUB-D Board to SUB-C Board to SUB-B Board SUB-C Board Cable No. Connection Cable No. Connection Eject Start Wheels Position Sensor SUB-B Board (CN235)
  • Page 437 Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 6.2.9 Cutter Unit 6.2.10 Ink System Mechanism 1 SUB Board SUB-B Board SUB-C Board SUB-B Board Cable No. Connection Cable No. Connection Cutter HP Sensor SUB-B Board (CN315) Ink Mark Sensor...

  • Page 438: Ink System Mechanism 2

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 6.2.11 Ink System Mechanism 2 6.2.12 SpectroProofer SUB Board Main-C Board Main Board SUB-B Board Cable No. Connection Cable No. Connection SUB Board (CN100) Main Board (CN100) CR HP Sensor Main-C Board (CN10)

  • Page 439: Panel Menu Map

    Epson Stylus Pro 4900/Epson Stylus Pro 4910 Revision A 6.3 Panel Menu Map This section provides the map of executable menus on the Control Panel. APPENDIX Panel Menu Map Confidential...
  • Page 440 User Menu Map : Default setting REFRESH MARGIN PLATEN GAP NARROW STANDARD WIDE AUTO NOZZLE CHECK WIDER ON: PERIODICALLY WIDEST ON: EVERY JOB PAGE LINE PRINTER SETUP PLATEN GAP PRINT NOZZLE PATTERN PAGE LINE ROLL PAPER MARGIN ROLL PAPER MARGIN ON: EVERY PAGE PAPER SIZE CHECK DEFAULT...
  • Page 441 Serviceman Mode Map LCD RGB Check Mecha Adjustment Paper SELF TESTING SELF TESTING Green RearAD Mecha Adjustment Blue CR Un Cap Life LCD RGB Check Panel Check Sensor Check Life Narrow Feed Speed 1 H to F Speed Standard F to H Speed Wide Page Size Wider...

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