Canon DADF-AA1 Service Manual
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Canon DADF-AA1 Service Manual

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SERVICE
MANUAL
COPYRIGHT ©2010 CANON INC.
DADF-AA1
MARCH 10, 2010
REV. 0
CANON DADF-AA1 REV. 0 PRINTED IN U.S.A.

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  • Page 1 DADF-AA1 SERVICE MANUAL MARCH 10, 2010 REV. 0 COPYRIGHT ©2010 CANON INC. CANON DADF-AA1 REV. 0 PRINTED IN U.S.A.
  • Page 3 Canon will release technical information as the need arises. In the event of major changes in the contents of this manual over a long or short period, Canon will issue a new edition of this manual.
  • Page 4 Introduction Symbols Used This documentation uses the following symbols to indicate special information: Symbol Description Indicates an item of a non-specific nature, possibly classified as Note, Caution, or Warning. Indicates an item requiring care to avoid electric shocks. Indicates an item requiring care to avoid combustion (fire). Indicates an item prohibiting disassembly to avoid electric shocks or problems.
  • Page 5 Introduction The following rules apply throughout this Service Manual: 1. Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with refer- ence to the timing of operation. In the diagrams, represents the path of mechanical drive; where a signal name accompanies the symbol , the arrow indicates the direction of the electric signal.

  • Page 7: Table Of Contents

    Contents Contents Chapter 1 Specifications 1.1 Product Specifications ........................... 1- 1 1.1.1 Specifications ............................1- 1 1.2 Names of Parts ............................... 1- 3 1.2.1 External View............................1- 3 1.2.2 Cross Section ............................1- 3 Chapter 2 Installation 2.1 Unpacking and Checking the Components ....................2- 1 2.1.1 Unpacking and Checking the Contents....................
  • Page 8 Contents 3.3.2 Document Presence/Absence Detection ..................... 3- 9 3.3.3 Detection of Last Document........................3- 9 3.3.4 Initial Document Size Detection ......................3- 9 3.4 Document Pickup/Separation ........................3- 10 3.4.1 Basic Pickup Operation ........................3- 10 3.4.2 Pickup Unit and Stopper........................3- 11 3.4.3 Pickup Timing............................
  • Page 9 Contents 4.4.1.1 Removing the Pickup Roller Unit ....................4- 4 4.4.1.2 Precaution about Pickup Roller Unit Installation ................4- 4 4.4.2 Pickup Roller/Separation Roller......................4- 4 4.4.2.1 Removing the Pickup Roller/Feed Roller..................4- 4 4.4.3 Separation Plate/Separation Pad ......................4- 5 4.4.3.1 Removing the Separation Pad ......................4- 5 4.4.4 Upper Registration Roller ........................4- 5 4.4.4.1 Points to Note When Replacing the Upper Registration Roller ..........4- 5 4.4.5 Lower Registration Roller ........................4- 5...
  • Page 10 Contents 4.5.12.1 Removing the ADF Driver PCB ....................4- 18 Chapter 5 Maintenance 5.1 User Maintenance............................5- 1 5.1.1 Cleaning ..............................5- 1 5.1.2 Replacement ............................5- 1 5.2 Maintenance and Inspection ......................... 5- 2 5.2.1 Periodically Replaced Parts........................5- 2 5.2.1.1 Periodically Replaced Parts ......................

  • Page 11: Chapter 1 Specifications

    Chapter 1 Specifications...
  • Page 13 Contents Contents 1.1 Product Specifications ..............................1-1 1.1.1 Specifications ....................................1-1 1.2 Names of Parts................................1-3 1.2.1 External View....................................1-3 1.2.2 Cross Section....................................1-3...

  • Page 15: Product Specifications

    Chapter 1 1.1 Product Specifications 1.1.1 Specifications 0024-6980 Item Specifications Remarks Document pickup method Automatic pickup and delivery Document loading direction Face-up Document type Sheet Document loading position Aligned to center Document separation method Upper separation Single A/B type: 42-128g/ m2or less Document longer than Inch type: 50-128g/m2 or less 432 mm: Single-sided...
  • Page 16 Chapter 1 Item Specifications Remarks Book document The pressure plate hinge must move vertically with respect (The document to the book document. thickness must be 50 mm or less.) Document feed speed 100% read: 253 mm/s Document processing speed Single-sided copy: 51 ipm (A4/LTR) Single-sided SEND: 51 ipm Power supply...

  • Page 17: Names Of Parts

    Chapter 1 1.2 Names of Parts 1.2.1 External View 0024-6981 F-1-1 [1] Feeder cover [4] Document supply tray [2] Rear cover [5] Document delivery tray [3] Slide guide [6] Front cover 1.2.2 Cross Section 0024-6982 [1] [2] [3] [4][5] [15] [14] [13] [12]...

  • Page 19: Chapter 2 Installation

    Chapter 2 Installation...
  • Page 21 Contents Contents 2.1 Unpacking and Checking the Components........................2-1 2.1.1 Unpacking and Checking the Contents ............................2-1 2.2 Installation Procedure ..............................2-3 2.2.1 Points to Note When Turning OFF the power of Host Machine ....................2-3 2.2.2 Installing the Stream Reading Glass ............................2-3 2.2.3 Installing the DADF ..................................

  • Page 23: Unpacking And Checking The Components

    Chapter 2 2.1 Unpacking and Checking the Components 2.1.1 Unpacking and Checking the Contents 0024-3811 1) Make sure that none of the following parts is missing. [11] [12] [13] [10] [11] [12] [13] F-2-1...
  • Page 24 Chapter 2 DADF main unit 1 unit Stepped screw (M4X10) 2 pcs. Hinge cover 2 pcs. Binding screw (M3X6) 1 pc. Glass positioning plate 1 pc. [10] Flat head screw (M4X6) 1 pc. Glass holder 1 pc. [11]* Finger pinch caution label 1 1 pc.

  • Page 25: Installation Procedure

    Chapter 2 3) Remove the screw [1] retaining the front side of the reader left cover. Re- move the 2 flat-head screws [2] to detach the reader upper left cover [3]. 2.2 Installation Procedure (The removed reader upper left cover is no longer necessary.) MEMO: 2.2.1 Points to Note When Turning OFF the power of Host The removed flat-head screws will be used later.

  • Page 26: Installing The Dadf

    Chapter 2 6) Pressing the projections [2] of the supplied glass holder [1] against the 3) Install the supplied 2 stepped screws (M5X6) [1] at the upper rear of the glass, mount the glass holder with the 2 flat-head screws (M4X6) [3] re- reader.

  • Page 27: Affixing Labels

    Chapter 2 5) Secure the hinges with the supplied 2 stepped screws (M4X10) [1]. Secure 7) Peel off the blind sheet [1] from the reader rear cover. (The blind sheet is the right hinge with the screw aligning the edge of the screw with the no longer necessary.) mark-off line (long) [2].

  • Page 28: Making Adjustments

    Chapter 2 2) Affix the supplied glass cleaning/lamp caution label [1] of the appropriate 2. Checking the left hinge height language to the reader front cover aligning with the mark-offline [2]. 1) Checking the rear-left height of the DADF Set paper against the protrusions [1] of the stream reading glass in such a manner that the seat [2] of the stream reading glass is nearly hidden.
  • Page 29 Chapter 2 3) Checking the front-left height of the DADF 4. Adjust the height of the left hinge. Set paper against the protrusions [1] of the stream reading glass in such a 1) Adjust the height with the left hinge height adjusting screw [1]. manner that the seat [2] of the stream reading glass is nearly hidden.

  • Page 30: Turning On The Host Machine

    Chapter 2 [Right side view] 3) Loosen the screw to adjust the right hinge position. F-2-26 6. Adjust the height of the right hinge 1) If the height is improper, adjust it with the right hinge adjusting screw [1]. CAUTION: Loosen the lock nut [2] before adjustment, and tighten it after adjustment.

  • Page 31: Adjusting The Read Position

    Chapter 2 2.3.4 Adjusting the Read Position 4) Confirm the "DOCST"is displayed and press the OK key to change the setting value. 0024-3821 1) Enter to the service mode. [Entering to Service Mode] MEMO: Press the additional function key " ", the 2 key, the 8 keys and the If it is necessary to change the sign (+/-), press the ssterisk key of the numeric keys.

  • Page 32: Attaching The Hinge Covers

    Chapter 2 2.5 Cleaning 9) Select "DF-WLVL4" on the screen and press the OK key. The machine executes the automatic adjustment with the duplex stream reading operation. When the adjustment ends successfully, the machine 2.5.1 Cleaning the Stream Reading Glass indicates "OK"...
  • Page 33 Chapter 2 2-11...

  • Page 35: Chapter 3 Functions

    Chapter 3 Functions...
  • Page 37 Contents Contents 3.1 Basic Construction................................. 3-1 3.1.1 Outline of Electric Circuits ................................3-1 3.2 Basic Operation ................................3-1 3.2.1 Drive Mechanism and Signals..............................3-1 3.2.2 Outline of Operation Modes................................. 3-2 3.2.3 Forward Pickup/Delivery (Single-sided Document -> Simplex Printing) Operation ..............3-3 3.2.4 Forward Pickup/Reverse Delivery (Double-sided Document ->...

  • Page 39: Basic Construction

    Chapter 3 3.1 Basic Construction 3.1.1 Outline of Electric Circuits 0024-6983 Electric circuits of this machine are controlled by the main controller PCB. The main controller PCB detect the input signals from sensors to output the signals that drive DC loads such as motors, solenoids, clutches, and fans at the predetermined timings. The ADF driver PCB does not have a memory area; data such as the data used in the service mode is stored in main controller PCB.

  • Page 40: Basic Operation

    Chapter 3 3.2 Basic Operation 3.2.1 Drive Mechanism and Signals 0024-6984 This machine is a document feeder exclusively for stream reading. This machine uses one motor and two electromagnetic clutches to pick up and feed document sheets. This machine uses a release motor to prevent the trailing edge of a document from swaying. Name (symbol) Function Pickup/feed motor (M1)

  • Page 41: Outline Of Operation Modes

    Chapter 3 3.2.2 Outline of Operation Modes 0024-6985 This machine has four operation modes. This machine operates in the operation mode specified by the host machine to perform printing. Operation mode names, brief outline of operations, ad associated print modes are given in the following table: Operation mode name Outline of operation Associated print mode...
  • Page 42 Chapter 3 Completion of reading of Completion of reading of first document shee second document sheet Completion of delivery of Start of reading of second document sheet second document sheet End of job Completion of delivery of first document sheet F-3-4...

  • Page 43: Forward Pickup/Reverse Delivery (Double-Sided Document -> Duplex Printing) Operation

    Chapter 3 3.2.4 Forward Pickup/Reverse Delivery (Double-sided Document -> Duplex Printing) Operation 0024-6987 The document flows as shown below. MEMO: This operation is performed for all double-sided documents irrespective of whether document widths are the same or different. Duplex read operation (when two document sheets are placed) Document Start of reading of front side of first document sheet...
  • Page 44 Chapter 3 Removal of registration loop of Stop after feeding the first document reverse side of first document sheet to reversal position sheet and release of re-pickup and delivery roller Feed of first document sheet and Removal of idle registration loop of start of reading of reverse side first document sheet and release of re-pickup and delivery roller...
  • Page 45 Chapter 3 End of reading of front side Start of separation of second document sheet and pressurization of second document sheet of delivery roller Stop after feeding the second document Start of reading of top side sheet to reversal position of second document sheet Removal of registration loop of reverse Delivery of first document sheet...

  • Page 46: Document Detection

    Chapter 3 Removal of idle reversal registration Start of reading of reverse side loop of second document sheet and of second document sheet release of re-pickup/delivery roller End of reading of reverse side Pressurization of second document of second document sheet sheet delivery roller Stop after feeding the second Completion of delivery of second...

  • Page 47: Document Presence/Absence Detection

    Chapter 3 b. Mixed size print mode and banner paper mode In the mixed size print mode and banner paper mode, the following three document detection functions are used: Function Description Sensor used (symbol) Document presence/ Detects whether there is a document Document set sensor (SR5) absence detection on the document pickup tray.

  • Page 48: Initial Document Size Detection

    Chapter 3 3.3.4 Initial Document Size Detection 0024-6991 The document length sensor 1 (SR8) and document length sensor 2 (SR8) detect the longitudinal size of the document placed on the document tray, and the docu- ment width sensor 1 (PS2) and the document width sensor 2 (PS1) detect the lateral size of the document. When a document is placed on the document tray, detection levers of the two document length sensors move the light shielding plate to prevent light from passing through the photo interrupter.

  • Page 49: Document Pickup/Separation

    Chapter 3 3.4 Document Pickup/Separation 3.4.1 Basic Pickup Operation 0024-6992 With a document placed on the document tray, pressing the print start key will pick up the document in the following manner. a. Pickup operation When the pickup/feed motor (M1) turns in reverse direction, the pickup roller unit lowers to rotate the pickup rollers, thus feeding the document. The stopper rises in conjunction with the pickup roller unit.

  • Page 50: Pickup Unit And Stopper

    Chapter 3 d. Stream reading When the leading edge of the document reaches the reading point, an image leading edge signal is sent to the host machine to start stream reading. "Stream reading" is a scan mode in which a document is moved on the optical system's glass using the platen roller. The read image is stored in the memory of the host machine.

  • Page 51: Pickup Timing

    Chapter 3 3.4.3 Pickup Timing 0024-6994 Start key ON Original placement Document pickup signal input Document separation/feed Document reading Document set sensor (SR5) Loop formation Read stanby Pickup/feed motor (M1) Pickup clutch (CL1) Registration clutch (CL2) Timing sensor (SR4) Registration sensor (SR1) Read sensor (SR2)

  • Page 52: Document Reversing

    Chapter 3 3.5 Document Reversing 3.5.1 Basic Operation 0024-6996 There are two types of document reversal operation: one that is performed from the top to the reverse side of the document and the other that is performed from the reverse side to the top of the document. Since the basic operation methods are identical, only the reversal operation performed from the reverse side to the top is discussed below.

  • Page 53: Operation Sequence

    Chapter 3 3.5.2 Operation Sequence 0024-6997 Start key ON Original replacement Document pickup signal input Document’s Document Document reading Document reversal reverse side separation/feed reading Document set sensor (SR5) loop formation Read stanby loop formation Pickup/feed motor (M1) Pickup clutch (CL1) Registration clutch (CL2)

  • Page 54: Release Operation

    Chapter 3 3.6.2 Release Operation 0024-6999 When a document is read, the read roller 1 (lower driven rollers) are pressurized/released to prevent the training edge of the document from swaying. After separation of the document, the read roller 1 (lower driven rollers) are pressurized by the Release motor (M2) during formation of a registration loop. After lapse of the predetermined time since turning off of the document trailing edge registration sensor, the Release motor is driven to release the read roller 1 (lower driven rollers).

  • Page 55: Release Motor (M2) Control

    Chapter 3 <Release operation sequence> Start key ON Original replacement Document pickup signal input Document Document Document reading separation/feed delivery Document set sensor (SR5) Pickup/feed motor Read stanby loop formation (M1) Pickup clutch (CL1) Registration clutch (CL2) Timing sensor (SR4) Registration sensor (SR1) Read sensor...

  • Page 56: Detecting Jams

    Chapter 3 3.7 Detecting Jams 3.7.1 Jams 0024-7003 This machine detects document jams using the sensors shown below. Document jam check timings are stored in the ROM on the reader controller PCB to check whether a jam has occurred according to presence/absence of a document at the relevant sensor position. When a jam occurs, the host machine stores its code.

  • Page 57: Stamp Operation

    Chapter 3 3.9 Stamp Operation 3.9.1 Outline (with the Stamp Unit-B1) 0024-7005 If the stamp function is selected in the FAX mode of the host machine, the stamp solenoid drive signal received from the ADF driver PCB drives the stamp solenoid (SL1) to affix a stamp indicating that the document has been read or sent.

  • Page 58: Fan

    3.10 Fan 3.10.1 Fan Operation 0024-7007 The fan (FM1) mounted on this machine always operates at full speed from the time ADF starts to feed paper until paper delivery is completed and exhausts the heat emitted by the ADF driver PCB and pickup/feed motor (M1). The air flow is shown below. F-3-33...

  • Page 59: Chapter 4 Parts Replacement Procedure

    Chapter 4 Parts Replacement Procedure...
  • Page 61 Contents Contents 4.1 Points to Note on Disassembly and Reassembly ......................4-1 4.1.1 Points to Note When Turning Off the Main Power of the Host Machine..................4-1 4.2 External Covers ................................4-1 4.2.1 Front Cover ....................................4-1 4.2.1.1 Removing the Front Cove ....................................4-1 4.2.2 Rear Cover....................................
  • Page 62 Contents 4.5.1.1 Removing the Fan......................................4-14 4.5.1.2 Precaution about Fan Installation ................................. 4-14 4.5.2 Inner Sensor of Feed Unit ................................4-14 4.5.2.1 Removing the Sensor in the Feed Unit ................................. 4-14 4.5.3 Document Width Volume ................................4-16 4.5.3.1 Removing the Relay PCB..................................... 4-16 4.5.4 Cover Open/Closed Sensor ................................

  • Page 63: Points To Note On Disassembly And Reassembly

    Chapter 4 4.1 Points to Note on Disassembly and 2) Move to the back of the host machine and detach the rear cover [2]. - Screw [1], 2 pcs. Reassembly 4.1.1 Points to Note When Turning Off the Main Power of the Host Machine 0024-7008 Points to Note When Turning Off the Main Power of the Host...

  • Page 64: Engaging Motor

    Chapter 4 3) Remove the pickup/feed motor [1] together with the support plate. - Screw, 3 pcs. - Connector [2], 1 pc. 4) Remove the feeder cover. - Tension spring [3], 1 pc. - Screw, 1 pc. - Screw [4], 2 pcs. - Positioning pin, 1 pc.

  • Page 65: Pickup Clutch

    Chapter 4 14) Remove the metal plate [1]. 4) Remove the pickup clutch [1]. - Screw [2], 3 pcs. - Harness clamp [2] - Resin ring [3] - Bearing [4] F-4-10 15) Remove the two timing belts [1]. F-4-13 F-4-11 Install the pickup clutch with the clutch gear [5] (white) aligned with 4.3.4 Pickup Clutch the mark "W"...

  • Page 66: Document Feeding System

    Chapter 4 4) Remove the registration clutch [1]. 7) Remove the pickup roller unit [1]. - Harness clamp [2] - Resin ring [2], 2 pcs. - Resin ring [3] - Bearing [3], 2 pcs. - Bearing [4] F-4-17 4.4.1.2 Precaution about Pickup Roller Unit Installation 0024-7018 - Install the pickup roller unit with the stopper arm [1] positioned at the front as shown.

  • Page 67: Separation Plate/Separation Pad

    Chapter 4 4.4.4 Upper Registration Roller 8) Remove the pickup roller [1] and feed roller [2]. - Screw [3] - Roller holder [4] 4.4.4.1 Points to Note When Replacing the Upper Registration Roller 0024-7021 Keep the upper registration roller position adjustment top [1] in position when replacing the upper registration roller.
  • Page 68 Chapter 4 7) Disconnect the nine connectors [1] from the ADF driver PCB. 16) Remove the resin ring [1], pulley [2], gear [3], E-ring [4], and bearing [5]. 17) Remove the gear [6], gear [7], gear [8], and bearing [9]. F-4-22 8) Remove the document tray.

  • Page 69: Delivery Reversing Roller (Upper)

    Chapter 4 21) Remove the sensor mount [1]. 7) Disconnect the nine connectors [1] from the ADF driver PCB. - Screw [2], 2 pcs. - Hook [3], 2 pcs. F-4-29 8) Remove the document tray. F-4-27 - Screw 22) Remove the lower registration roller [1]. - Harness guide, 2 pcs.

  • Page 70: Read Roller 1

    Chapter 4 16) Remove the E-ring [1], pulley [2], gear [3], and bearing [4]. - Document tray harness 9) Remove the pickup/feed motor together with the support plate. - Connector, 1 pc. - Tension spring, 1 pc. - Screw, 2 pcs. 10) Remove the left hinge.

  • Page 71: Read Roller 2

    Chapter 4 16) Remove the resin ring [1], pulley [2], gear [3], E-ring [4], and bearing 19) Remove the read roller 1 [1]. [5]. - Pulley [2], 1 pc. 17) Remove the gear [6], gear [7], gear [8], and bearing [9]. - E-ring [3], 1 pc.
  • Page 72 Chapter 4 7) Disconnect the nine connectors [1] from the ADF driver PCB. 16) Remove the resin ring [1], pulley [2], gear [3], E-ring [4], and bearing [5]. 17) Remove the gear [6], gear [7], gear [8], and bearing [9]. F-4-40 8) Remove the document tray.

  • Page 73: Platen Roller

    Chapter 4 20) Remove the read roller 2 [1]. 8) Remove the document tray. - Resin ring [2], 1 pc. - Screw - Pulley [3], 1 pc. - Harness guide, 2 pcs. - Gear [4], 1 pc. - Document tray harness - E-ring [5], 1 pc.

  • Page 74: Feeding Unit

    Chapter 4 16) Remove the resin ring [1], pulley [2], gear [3], E-ring [4], and bearing 19) Remove the platen roller unit [1]. [5]. - Pulley [2], 1 pc. 17) Remove the gear [6], gear [7], gear [8], and bearing [9]. - E-ring [3], 1 pc.

  • Page 75: Feed Roller Guide

    Chapter 4 7) Disconnect the nine connectors [1] from the ADF driver PCB. 13) Remove the feed unit [1]. - Screw [2], 8 pcs. F-4-52 8) Remove the document tray. - Screw - Harness guide, 2 pcs. - Document tray harness 9) Remove the pickup/feed motor together with the support plate.

  • Page 76: Electrical System

    Chapter 4 5) Remove the tray holder [1]. 3) Remove the fan [1]. - Screw [2] - Harness clamp [2], 2 pcs. - Connector [3] - Screw [4] F-4-57 6) Move to the back of the host machine and detach the rear cover. - Screw, 2 pcs.
  • Page 77 Chapter 4 - Document tray harness 16) Remove the resin ring [1], pulley [2], gear [3], E-ring [4], and bearing 9) Remove the pickup/feed motor together with the support plate. [5]. - Connector, 1 pc. 17) Remove the gear [6], gear [7], gear [8], and bearing [9]. - Tension spring, 1 pc.

  • Page 78: Document Width Volume

    Chapter 4 21) Remove the sensor mount [1]. 2) Remove the Relay PCB [1]. - Screw [2], 2 pcs. - Fook [2], 2 pcs. - Hook [3], 2 pcs. - Connector [3], 2 pcs. F-4-66 22) Remove the sensor [1]. - Connector [2] F-4-69 Install the document width volume with its lower gear groove [4]...

  • Page 79: Document Length Sensor

    Chapter 4 3) Remove the document set sensor [1]. 2) Remove the last document detection sensor [1]. - Connector [2], 1pc. - Connector [2] F-4-71 4.5.6 Document Length sensor 4.5.6.1 Removing the Document Length Sensor F-4-73 0024-7036 1) Detach the cover on the reverse side of the document tray. 4.5.8 Release Motor HP Sensor - Screw, 3 pcs.

  • Page 80: Pressurization Solenoid

    Chapter 4 3) Remove the timing sensor [1]. 5) Remove the LED PCB [1]. - Connector [2] - Screw [2] - Connector [3] F-4-77 F-4-75 4.5.12 ADF Driver PCB 4.5.10 Pressurization Solenoid 4.5.12.1 Removing the ADF Driver PCB 4.5.10.1 Removing the Pressurization Solenoid 0024-7043 1) Open the feeder cover.
  • Page 81 Chapter 4 4-19...

  • Page 83: Chapter 5 Maintenance

    Chapter 5 Maintenance...
  • Page 85 Contents Contents 5.1 User Maintenance ................................5-1 5.1.1 Cleaning ....................................... 5-1 5.1.2 Replacement ....................................5-1 5.2 Maintenance and Inspection ............................5-2 5.2.1 Periodically Replaced Parts................................5-2 5.2.1.1 Periodically Replaced Parts ...................................5-2 5.2.2 Durables ....................................... 5-2 5.2.2.1 Durables ..........................................5-2 5.2.3 Periodical Servicing ..................................5-2 5.2.3.1 Periodic Service Items ....................................5-2 5.3 Adjustment..................................

  • Page 87: User Maintenance

    Chapter 5 5.1 User Maintenance 5.1.1 Cleaning 0024-7044 Tell the user to clean the following parts every 2000 sheets. Parts to clean Cleaning method Cleaning cycle Remarks White plate (pressure Clean with a cloth which As required plate) is dampened with water or neutral detergent and Document glass (large/ As required or every...

  • Page 88: Maintenance And Inspection

    Chapter 5 3) Using tweezers or the like, attach a new stamp. Be sure to attach the new stamp with the stamp face up. F-5-3 If the stamp is floating, a jam can occur. Be sure to push in the stamp until it clicks.

  • Page 89: Periodical Servicing

    Chapter 5 5.2.3 Periodical Servicing 5.2.3.1 Periodic Service Items 0024-7048 Use only the specified solvents and oil. Black streaks can appear due to the paper dust and other foreign particles on the rollers, scrapers, and other part. Clean these parts with care. A:Cleaning B:Replacement C:Lubrication D:Adjustment E:Inspection As for the user maintenance point as well, clean it at the time of the periodic maintenance.

  • Page 90: Adjustment

    Chapter 5 2. Checking the left hinge height 1) Checking the rear-left height of the DADF 5.3 Adjustment Set paper against the protrusions [1] of the stream reading glass in such a manner that the seat [2] of the stream reading glass is nearly hidden. 5.3.1 Basic Adjustment CAUTION: Set paper so that it does not reach the document reading area [3].

  • Page 91: Adjusting The Perpendicularity

    Chapter 5 3) Checking the front-left height of the DADF 4. Adjust the height of the left hinge. Set paper against the protrusions [1] of the stream reading glass in such a 1) Adjust the height with the left hinge height adjusting screw [1]. manner that the seat [2] of the stream reading glass is nearly hidden.

  • Page 92: Adjusting The Read Position

    Chapter 5 5.3.1.4 Adjusting the Read Position 1) Load a test chart in the DADF to make a copy. 0024-7053 1) Start service mode. MEMO [Starting Service Mode] The test chart is printed on the back cover of the Installation Procedure (this Press the User Mode key, press the 2 and 8 keys at the same time, and manual).

  • Page 93: Adjusting The White Level

    Chapter 5 5.3.1.8 Adjusting the White Level 0024-7057 MEMO This is a item of adjustment in which the white level of images made in stream reading mode are matched with the white level of images made in copyboard cover mode. If you omit this adjustment, the following will likely occur: - inappropriate reproduction of background density in images made in stream reading mode...

  • Page 94: Outline Of Electrical Components

    Chapter 5 5.4 Outline of Electrical Components 5.4.1 Electric Parts Layout and Functions 0024-7059 <Sensors> Symbol Name Part No. Relay PCB ADF driver PCB Jam code 0003, 0004, 0044, 0094 Registration sensor WG8-5696 0005, 0006, 0045, 0046, 0094 Read sensor WG8-5696 0007, 0008, 0047, 0048, 0094 Delivery reversal sensor...

  • Page 95: Variable Resistors (Vr), Light-Emitting Diodes (Led), And Check Pins By Pcb

    Chapter 5 <Motors, clutches, solenoids, PCBs, etc.> Symb ADF driver PCB Name Function Part No. E code Motor Pickup/feed motor FK2-6869 Release motor FK2-0207 E413 Solenoid Stamp solenoid FK2-6871 Pressurization solenoid FK2-0216 Clutch Pickup clutch FK2-6870 Registration clutch FK2-6870 Exhaust fan FK2-6872 PCB1 ADF driver PCB ADF control...

  • Page 97: Chapter 6 Error Code

    Chapter 6 Error Code...
  • Page 99 Contents Contents 6.1 Service Error Code ................................ 6-1 6.1.1 Error Code List..................................... 6-1 6.2 Jam Codes..................................6-1 6.2.1 Jam Code List....................................6-1...

  • Page 101: Service Error Code

    Chapter 6 6.1 Service Error Code 6.1.1 Error Code List 0024-7072 Code Detail Error state Description code E413 Release motor error (The level of the roller motor HP sensor has not changed within the specified time even after the Shift motor was driven.) Cause: The release motor HP sensor, release motor, or ADF driver PCB is defective or the release cam load has increased.
  • Page 102 Chapter 6 Code Name Sensor No. Description 0095 Pickup NG A pickup signal has been received for 2 seconds with no document placed on the tray.
  • Page 103 Appendix...
  • Page 105 1 General Timing Chart Timing Chart (A4 size, single-sided original (1 sheet ) copying) Start key ON Original replacement Document pickup signal input Document Document Document reading separation/feed delivery Document set sensor (SR5) Loop formation Read position Pickup/feed motor (M1) Pickup clutch (CL1) Registration clutch...
  • Page 107 2 General Circuit Diagram General Circuit Diagram DADF-AA1 General Circuit Diagram Pickup Registration Clutch Clutch Release Motor Pickup/Feed Motor Pressurization Delivery Solenoid Cover Open/Closed Registration Reversal Timing Document Set Sensor Read Sensor Sensor Sensor Sensor Sensor 1 2 3 J112...
  • Page 109 Mar 10 2010...

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