Page 1
SERVICE MANUAL SERVICE MANUAL SERVICE MANUAL Image A3 Size Color .lat Bed Scanner EPSON GT-30000 ® SESC00012...
Page 2
! The contents of this manual are subject to change without notice. ! All effort have been made to ensure the accuracy of the contents of this manual. However, should any errors be detected, SEIKO EPSON would greatly appreciate being informed of them.
Page 3
2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. I. THE EPSON PRODUCT HAS A PRIMARY AC RATING DI..ERENT .ROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.
Page 4
CHAPTER 5. ADJUSTMENTS Provides Epson-approved methods for adjustment. CHAPTER 6. MAINTENANCE Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives required for servicing the product. CHAPTER 7. APPENDIX Provides the following additional information for reference: Connector Pin Assignment ...
Symbols used in this manual A number of different icons are used in this manual to indicate additional information given with regard to a particular item, and to give warnings when potentially dangerous operations are to be carried out. If one of these icons appears, you should always read the accompanying warning, caution, check point or adjustment tip.
Page 6
Revision Status Revision Issued Date Description December 14, 2000 Draft edition issued December 28, 2000 .irst Release...
A3 Size Color .lat Bed Scanner GT-30000 Revision A 1.1 Overview The GT-30000 is an A3 size flat bed color image scanner, designed for office applications. The main features of the scanner are: " High resolution Optical resolution is 600 dpi 12 bit in, 8 bit out "...
A3 Size Color .lat Bed Scanner GT-30000 Revision A 1.2.9 Document " Reflective type Documents which has a smooth surface such as a printing and photograph. 1.2.10 Physical Dimensions and Weight " Dimensions (with AD.) 658 * 488 * 254 mm (W * D * H) (See ".igure 1-1.
Notes Bus free phase 1.3.1 General Description Arbitration phase The layout of the interfaces of the GT-30000, as shown in ".igure 1-2. Interface Selection / Re-selection phase Layout of the GT-30000". The LUN (Logical Unit Number) is fixed at '0' in this devise.
A3 Size Color .lat Bed Scanner GT-30000 Revision A 1.3.2.6 SCSI ID Setting Table 1-4. Inquiry Data AENC No support asynchronous event notification The SCSI ID is set with a rotary switch on the rear panel. TrmIOP No support Terminate I/O Process message...
A3 Size Color .lat Bed Scanner GT-30000 Revision A 1.3.2.8 Status Table 1-7. Extended Message Message The status is determined as follows. Completion Code length Extended Message Name Direction of ATN Table 1-5. Status Conditions Byte Status bit7 bit6 bit5...
A3 Size Color .lat Bed Scanner GT-30000 Revision A Table 1-8. Normal SCSI Connector .unctions Table 1-9. Wide SCSI Connector .unctions Signal In/Out Connector pin No Description Signal Connector pin number Description Acknowledge DB10 Data Bus 10 Reset DB11 Data Bus 11...
A3 Size Color .lat Bed Scanner GT-30000 Revision A 1.3.4 A Limitation of Interface Connection Table 1-10. Control Code Summary Category Command Code This scanner is equipped with SCSI I/. in standard. If it is equipped with Set Brightness ESC L i IEEE1394 I/.
A3 Size Color .lat Bed Scanner GT-30000 Revision A 1.4 Operation Specifications 1.4.1 Switches " OPERATE button Turns the scanner ON and O... When the power is turned on, the scanner is initialized. SCSI ID switch N-W switch .igure 1-6.
A3 Size Color .lat Bed Scanner GT-30000 Revision A " Select SW of SCSI Data Bus Length (See ".igure 1-6. SCSI ID and Table 1-11. Indicator Status and Corresponding Errors SCSI Data Bus Length switch") READY LED (Green) ERROR LED (Red)
A3 Size Color .lat Bed Scanner GT-30000 Revision A 1.4.3 Available Scan Area 1.4.4 Transportation Screw The origin point for this scanner is marked at the rear left corner of the A carriage fixing screw is attached to the rear of the scanner. The purpose of document table when viewed from the front.
PBA-INS board (CCD) The EPSON A3 flat-bed type scanners usually read images by moving the integral CR unit which consists of the lamp, mirror, and lens-CCD sensor. This Motor scanner, however, characteristically has the CCD sensor and the lens in the unit whole unit attached onto the mechanism as an independent unit.
The vertical distance between the mirrors in the Mirror unit also remains constant. However, the horizontal Compared with other EPSON scanners, the main feature of this scanner lies in distances between the Lamp/mirror unit (rate = x2) and the Mirror unit (rate = its new optical mechanism used for reading images.
A3 Size Color .lat Bed Scanner GT-30000 Revision A 2.3 Electrical Circuit Operations Processes the image data according to various setting information provided by the host, such as gamma correction, color correction, and halftoning correction. 2.3.1 Control Circuit Operation After completing these processes, image data is output to the host.
Page 26
A3 Size Color .lat Bed Scanner GT-30000 Revision A PBA-INS board AC 85-140V/170-264V AC 85-140V/170-264V AC 85-140V/170-264V AC 85-140V/170-264V INVERTER Document Document Document size size size 45-65Hz 45-65Hz 45-65Hz 45-65Hz board Lamp sensors0 sensors3 sensors4 PD3728D PBA-PANEL board µ PWS-...
Page 27
A3 Size Color .lat Bed Scanner GT-30000 Revision A PBA-MAIN BOARD PBA-CONNECT BOARD Table 2-1. Table 2-3. Name Location Description Name Location Description The CPU that controls this entire operation STK672-080 Motor drive control of this board and operates at 20 MHz.
A3 Size Color .lat Bed Scanner GT-30000 Revision A The different levels of VDC are distributed to corresponding mechanisms, as shown in "Table 2-4 DC Output Power": Table 2-4. DC Output Power Output VDC Application +5 V Logic and document size sensor power lines ...
A3 Size Color .lat Bed Scanner GT-30000 Revision A 3.1 Overview COMMUNICATION ERROR (AN ERROR OCCURRED WITH THE SCSI TRANSMISSION PROTOCOL) This chapter describes troubleshooting techniques to help you solving any Table 3-2. scanner problems which you may encounter. .irst, see the next section to...
A3 Size Color .lat Bed Scanner GT-30000 Revision A .ATAL ERROR OPTION ERROR (AD. ERROR) Table 3-3. Table 3-4. Operation/ Operation/ LED Status Cause LED Status Cause Condition Condition A carriage home seeking error occurred. Cover open 1. The carriage fixing lever has been locked 1.
A3 Size Color .lat Bed Scanner GT-30000 Revision A Table 3-6. Sensor Check Points MOTORS Motor Test Point Signal Level Condition: Disconnect from the connector and measure with the cable <PBA-CONNECT board> connected to the motor. H: Document not present...
Page 33
A3 Size Color .lat Bed Scanner GT-30000 Revision A Start Start Transportation Are the main circuit Unlock the screw screw set to board and connection Connect properly. locked position? circuit board connected incorrectly? Turn on the scanner. Has the power...
Page 34
A3 Size Color .lat Bed Scanner GT-30000 Revision A Start Start Transportation Unlock the screw screw set to locked Replace the lamp on the carriage. position? Turn on the power and move the carriage outside the HP. Does the lamp Old lamp was defective.
Page 35
A3 Size Color .lat Bed Scanner GT-30000 Revision A Start Start Check the SCSI connection settings. Stains or foreign Clean the glass material on glass? Are the terminal Old lamp was defective. settings and ID settings normal? Stains or foreign...
A3 Size Color .lat Bed Scanner GT-30000 Revision A 3.1.3 Troubleshooting Circuit Board Errors Table 3-9. PBA-MAIN Board Troubleshooting (continued) Phenomenon Check Points This section describes the check points for the electrical circuit boards. <.atal Error> Check the CPU (IC1) for the signal...
This chapter describes the procedures for disassembling and assembling the before disassembling or re-assembling any of the components of the EPSON main components of the scanner GT-30000. (Refer to A3 Auto Document GT-30000. .eeders service manual for detail on the disassembly and assembly procedures for the AD..)
A3 Size Color .lat Bed Scanner GT-30000 Revision A 4.1.2 Tools 4.1.3 Screws Use only the specified tools in order to avoid damaging the scanner. The screw no. described in the disassembly procedures will be input by next version. Table 4-2. Tool List...
Page 40
A3 Size Color .lat Bed Scanner GT-30000 Revision A Table 4-3. Screw List Screw Type / Specification Appearance Color WS sems screw M3 x 8 Gold Binding screw M3 x 6 Black ".igure 7-10. Exploded Silver Diagrams 4" No.95 ".igure 7-10. Exploded Silver Diagrams 4"...
Scanner Body Main Circuit Board Removal (See Chapter 4.2.1.2) This section describes the separate disassembly and removal procedures for Disassembly each main assembly of the GT-30000. The flow chart in ".igure 4-1. (See AD. Removal (See Chapter 4.2.1.1) Chapter 4.2.1) Disassembly Procedure for GT-30000"...
A3 Size Color .lat Bed Scanner GT-30000 Revision A 4.2.1 Scanner Body Disassembly 4.2.1.2 Main Circuit Board Removal The main circuit board (PBA-MAIN) of this scanner consists of an independent This section describes procedures for disassembling the major units of the main circuit board assembly.
A3 Size Color .lat Bed Scanner GT-30000 Revision A When re-installing the mechanism cover, the magnetic C H E C K catch should be installed in the specified position. (See P O I N T ".igure 4-4. Mechanism Cover Removal".) Screw Caps Screws (No.1)
A3 Size Color .lat Bed Scanner GT-30000 Revision A Insert an object with Screw Cap a sharp tip such as a needle or gimlet Cross-section into the hole to lever out the cover. Glass Belt tightening torque 50 ± 10 N •...
Page 45
A3 Size Color .lat Bed Scanner GT-30000 Revision A 4.2.1.4.1 Using the Leveling Tool 1. Remove the Scanner Mechanism. (See ".igure 4-6. Scanner Mechanism Removal".) 2. Place the scanner mechanism onto the stages while referring to ".igure 4-8. Special Tool Position and Adjusting Method".
A3 Size Color .lat Bed Scanner GT-30000 Revision A 4.2.2 Scanner Mechanism Disassembly 4.2.2.2 Cooling .an Removal 1. Disconnect the cooling fan CN1 connector. This section describes the removal procedures for the main components of the scanner mechanism. 2. Remove the two screws (No.10) which are securing the cooling fan to the power supply assembly, and then remove the cooling fan.
Page 47
A3 Size Color .lat Bed Scanner GT-30000 Revision A Push the tabs inward to remove Power Switch Cover Power supply board mounting guides (No. 12 ) ) ) ) Screws(No. Screws Screws Screws (No. (No. (No. 12 ) ) ) ) Screws Screws(No.
A3 Size Color .lat Bed Scanner GT-30000 Revision A .use .igure 4-13. Power Switch Height 4.2.2.4 .use Removal .igure 4-14. .use Removal 1. Remove the power supply assembly. (See "Chapter 4.2.2.3 Power Supply Circuit Board Removal".) 2. Remove the fuse. (See ".igure 4-14. .use Removal".)
A3 Size Color .lat Bed Scanner GT-30000 Revision A 4.2.2.6 Panel Circuit Board Removal A D J U S T M E N T Once the glass frame assembly has bee removed, you 1. Remove the mechanism cover. ("Chapter 4.2.1.3 Mechanism Cover...
A3 Size Color .lat Bed Scanner GT-30000 Revision A 4.2.2.7.1 Lamp Cover Removal 4.2.2.7.3 Inverter Circuit Board Removal 1. Remove the glass frame assembly. ("Chapter 4.2.2.5 Glass .rame 1. Remove the five screws (No.8) which are securing the inverter circuit Assembly Removal".)
A3 Size Color .lat Bed Scanner GT-30000 Revision A 4.2.2.9 CR Motor Assembly Removal This section describes the procedures for removing the CR motor assembly which drives the carriage mechanism (mirror/lamp). 1. Remove the lens and CR motor assembly cover. (See "Chapter 4.2.2.8 Mechanism internal cover removal Removal".)
A3 Size Color .lat Bed Scanner GT-30000 Revision A 3. Secure the CR motor assembly to the scanner mechanism by tightening 3. Take the document size sensors upward and remove them. (See ".igure the screws. (See ".igure 4-21. CR Motor Assembly Removal".) 4-22.
A3 Size Color .lat Bed Scanner GT-30000 Revision A 4.2.2.11 Relay Circuit Board Removal CN10 1. Remove the main circuit board assembly. (See "Chapter 4.2.1.2 Main Circuit Board Removal".) CN13 2. Remove the circuit board and sensor cover. (See "Chapter 4.2.2.8 Mechanism internal cover removal Removal".)
A3 Size Color .lat Bed Scanner GT-30000 Revision A 5.1 Overview 5.1.1 Adjustment & Special Tool .ollowing table shows the necessary adjustment and specified tools for the This section describes how to carry out the adjustments which are required for scanner.
A3 Size Color .lat Bed Scanner GT-30000 Revision A 5.2 Belt Tension Adjustment 3. Check that the flange is between the sections marked "a" (so that the belt tension is within the specified range). 1. Install the CR motor assembly to the scanner mechanism, and fit the belt.
A3 Size Color .lat Bed Scanner GT-30000 Revision A 5.3 Adjustments Using the Special Software When starts the program, it may show you by C H E C K 5.3.1 Necessary Tools P O I N T Japanese UI first. It is possible to change it to English mode by clicking "English".
A3 Size Color .lat Bed Scanner GT-30000 Revision A Table 5-3. Names and .unctions of Main Dialog Box Components Table 5-3. Names and .unctions of Main Dialog Box Components Name .unction Name .unction 0 Clear (Zero clear) Click this button to reset the number of scans or the ...
A3 Size Color .lat Bed Scanner GT-30000 Revision A 5.3.3.4 Adding a new scanner model 4. The current setting data rear from the EEPROM will be displayed in the respective areas. 1. If you would like to add a new scanner model, enter the name of the new Due to the identity of the program, if you input some scanner model in the additional model display area.
A3 Size Color .lat Bed Scanner GT-30000 Revision A 5.3.4 Home Position Adjustment 5.3.3.7 Resetting the AD. Paper .eed Total To reset the number of pages fed by the AD. to zero, see "Chapter 5.3.3.6 Check the home position and adjust it if necessary so that no overrun*1 occurs.
A3 Size Color .lat Bed Scanner GT-30000 Revision A Edge Panel Main Scanning Direction When adjusting the home position, note that the home 1.0mm C H E C K positions are different for the computer screen and for P O I N T the document platen of the scanner.
Page 63
A3 Size Color .lat Bed Scanner GT-30000 Revision A 5.3.4.1.2 Check the home position in the sub scanning direction Set the maximum area 1. Place a sheet of white paper (one sheet of A3 paper or two sheets of A4...
A3 Size Color .lat Bed Scanner GT-30000 Revision A 5.3.4.2 Main Scanning Correction Value Adjustment 5.3.4.3 Sub Scanning Correction Value Adjustment 1. Click the Read button to read the scanner information. 1. Click the Read button to read the scanner information.
A3 Size Color .lat Bed Scanner GT-30000 Revision 0 6.1 OVERVIEW 6.1.2 Lubrication This scanner needs no lubrication at the level of service specified in the service This chapter provides information necessary to keep the scanner function in manual. optimum condition constantly and to prevent troubles.
A3 Size Color .lat Bed Scanner GT-30000 Revision A 7.1 Connector Pin Assignment Table 7-1. Connector Summary (continued) Board .unction Ref. Connectors used on the electrical circuit boards are summarized in the table below. .or connection with PBA-CONNECT Table 7-7 on page 74...
A3 Size Color .lat Bed Scanner GT-30000 Revision A 7.1.2 Circuit Signals PBA-MAIN - SCSI 68 PIN I/. (CN2) POWER SUPPLY LAMP Table 7-2. BOARD PIN No. Signal Name PIN No. Signal Name SGND SGND SGND SGND SGND SGND PBA-...
Page 70
A3 Size Color .lat Bed Scanner GT-30000 Revision A Table 7-2. PBA-MAIN - SCSI 50 PIN I/. (CN3) PIN No. Signal Name PIN No. Signal Name TRMPWR *SEL Table 7-3. N.C. *C/D PIN No. Signal Name PIN No. Signal Name...
Page 71
A3 Size Color .lat Bed Scanner GT-30000 Revision A PBA-MAIN - AD. I/. (CN4) PBA-MAIN - PBA-CONNECT (CN5) Table 7-4. Table 7-5. PIN No. Signal Name .unction PIN No. Signal Name .unction AD. detection +24V Power supply (+24V) AD. detection...
Page 72
A3 Size Color .lat Bed Scanner GT-30000 Revision A Table 7-5. Table 7-5. PIN No. Signal Name .unction PIN No. Signal Name .unction Expansion I/. data bus AGND Analog GND Expansion I/. data bus Geven CCD data (green, even) SGND...
Page 73
A3 Size Color .lat Bed Scanner GT-30000 Revision A Table 7-5. Table 7-5. PIN No. Signal Name .unction PIN No. Signal Name .unction DM11 Expansion I/. data bus φ CCD driver Expansion I/. data bus SGND Signal GND SGND Signal GND Power supply (+5V) Expansion I/.
Page 74
A3 Size Color .lat Bed Scanner GT-30000 Revision A PBA-CONNECT - MOTOR (CN3) PBA-CONNECT - PWS-POWER (CN5) Table 7-7. Table 7-9. PIN No. Signal Name .unction PIN No. Signal Name .unction +24V Power supply (+24V) LOCK Power supply fan lock...
Page 75
A3 Size Color .lat Bed Scanner GT-30000 Revision A Table 7-11. PBA-CONNECT - CONNECTOR .OR OPTIONAL IEEE 1394 I/. (CN8) PIN No. Signal Name .unction Expansion I/. data bus Table 7-11. Expansion I/. data bus PIN No. Signal Name .unction...
Page 76
A3 Size Color .lat Bed Scanner GT-30000 Revision A PBA-CONNECT - DOCUMENT SIZE SENSOR (CN9) PBA-CONNECT - PBA-CCD (CN13) Table 7-12. Table 7-14. PIN No. Signal Name .unction PIN No. Signal Name .unction SGND Document size sensor 4 GND A+12V...
Page 77
A3 Size Color .lat Bed Scanner GT-30000 Revision A Table 7-14. PIN No. Signal Name .unction AGND Analog GND AGND Analog GND AGND Analog GND AGND Analog GND AGND Analog GND A+12V Power supply (+12V) PBA-LAMP - B106INV (CN2) Table 7-15.
A3 Size Color .lat Bed Scanner GT-30000 Revision A 7.3 Circuit Diagram Circuit diagrams of GT-30000 are shown as the following pages. " PBA-MAIN BOARD (1/3) " PBA-MAIN BOARD (2/3) " PBA-MAIN BOARD (3/3) " PWS-POWER BOARD " PBA-CONNECT BOARD...
A3 Size Color .lat Bed Scanner GT-30000 Revision A 7.5 ASP List Table 7-16. Major ASP List Drawing No. Name GUIDE-HINGE-L-SUB Table 7-16. Major ASP List GUIDE-..C Drawing No. Name BKR-PCB-HP WS sems screw M4X8 Tapping tite S-tite IT tapping tite screw M3X6 .ILM-CRG1...
Page 93
A3 Size Color .lat Bed Scanner GT-30000 Revision A Table 7-16. Major ASP List Drawing No. Name SCR-040030 .AN-109P0424H7D17 Binding screw M3X6 ASSY-CORE-CRG1 ASSY-CORE-.RAME LOGOPLATE WS sems screw M3X8 BAND-STOPPER Washer WS sems screw M3X12 ".igure 7-11. Exploded Diagrams 5"...