Avision AD280 Service Manual
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Avision AD280 Service Manual

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Sheet-fed Scanner AD280/AD260
Service Manual
Avision Inc.
P/N 253-0142-E

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Summary of Contents for Avision AD280

  • Page 1 Sheet-fed Scanner AD280/AD260 Service Manual Avision Inc. P/N 253-0142-E...

  • Page 2: Table Of Contents

    Contents INTRODUCTION ..................... 1-1 GENERAL NOTES FOR SERVICING ............. 1-1 PRECAUTIONS OF INSTALLATION/TRANSPORTATION ........2-1 PRECAUTIONS OF INSTALLATION ............. 2-1 TRANSPORTATION ................. 2-1 THEORY OF OPERATION ................3-1 INTRODUCTION ..................3-1 MAIN CONTROL UNIT ................3-2 3.2.1 System diagram ................3-2 3.2.2 Cable Connection.................
  • Page 3 Service Manual 6.1.15 Removing the CCD Assembly from Upper Base ......6-27 6.1.16 Removing the Ultrasonic Transmitter from the Upper Base ....6-30 6.1.17 Removing Sensor board from Upper Base ........6-31 6.1.18 Removing the Conductive Brush ..........6-33 6.1.19 Removing the Idle Roller/Metal Cover/Spring from the Upper Base ... 6-34 6.1.20 Removing the Idle Roller/Metal Cover/Spring /Jam Sensor from the Upper Base ................

  • Page 4: Introduction

    1. INTRODUCTION General Notes for Servicing General Description This manual is intended to be used by the maintenance engineers. It describes areas to be maintained, the detailed installation, and the component replacement procedures as well as the main trouble shooting guides. Please take your time to read this manual thoroughly to obtain comprehensive knowledge about the scanner before serving the unit.

  • Page 5: Precautions Of Installation/Transportation

    2. PRECAUTIONS OF INSTALLATION/TRANSPORTATION Precautions of Installation Transportation PRECAUTIONS OF INSTALLATION Pay attention to the following matters before unpacking and installation.  Do not install in a place where vibration may occur.  Keep the scanner out of direct sunlight. Do not install near a heat source. ...

  • Page 6: Theory Of Operation

    3. THEORY OF OPERATION Introduction Main Control Unit INTRODUCTION Cold Cathode Fluorescent Lamp LED Light Bar Host Analogue Analogue Signal Signal Digital Digital Lens Lens Signal Signal Main Main Host Reflected Board Reflected Board 1 0 0 1 0 0 Rays USB 3.0 Rays...

  • Page 7: Main Control Unit

    MAIN CONTROL UNIT 3.2.1 System diagram Figure 3.2 AD280/AD260 System Block Diagram...

  • Page 8: Cable Connection

    3.2.2 Cable Connection 3.2.3 Power supply In this system, there is only one type of power supply. Please see Table 3.1 for details. Table 3.1 Power Adapter Type Wall-mount Characteristic Input voltage range 100-240V Input current (at the 2A type or less rated input/output) Input frequency 50-60Hz...

  • Page 9: Problem Solving

    4. PROBLEM SOLVING Diagnostics Troubleshooting This chapter supplies two paths for dealing with operational problems. The first relies on the scanner’s internal diagnostics. The second uses troubleshooting flowcharts and tables to isolate the problem. In many cases, the internal diagnostics will help you to locate the source of the problem quickly.

  • Page 10: Offline Diagnostics

    4.1.2 Offline diagnostics To run the offline diagnostics, and turn the power back on. When you first turn the scanner back on, the LED light will blink, indicating that the diagnostics are in progress. Observe the front panel LED closely. In a short time, the LED indicates the results of the offline diagnostics as explained in the table below.

  • Page 11: Diagnostic Flowcharts

    4.1.3 Diagnostic flowcharts Use the flowcharts that follow to determine the exact problem when either the online or offline diagnostics indicate a group error. Refer to Chapter 4 for parts replacement. 4.1.3.1 Group 2 error flowchart (paper in paper tray) This flowchart applies when the LED is off and LCD shows Error code 2013 with the scanner online, and there is paper in the ADF paper tray.
  • Page 12 4.1.3.2 Group 3 error flowchart (no paper in paper tray) This flowchart applies when the Green light LED is off and the LCD shows Error code 2014 with the scanner online, and there is no paper in the paper tray. Group 3 Error Open cover, then close the cover...

  • Page 13: Troubleshooting

    TROUBLESHOOTING Refer first to the applicable troubleshooting flowchart in the following three sections. The flowcharts refer you to the appropriate table for detailed troubleshooting. 4.2.1 Flowcharts This section provides the following troubleshooting flowcharts:  Troubleshooting from power on to scanner ready ...
  • Page 14 4.2.1.1 Troubleshooting flowchart: power on to scanner ready. Troubleshooting From Power on Power See Table 4.3 LED on Face down light check Face up light check Warming-up Check (Green LED Blinking) Warming- up Finish? Wait for command from host (Green LED on)
  • Page 15 4.2.1.2 Troubleshooting flowchart: online operation (ADF mode) Online Troubleshooting Frequent See Table 4.9 Paper Jam? Frequent See Table 4.10 double feed Large skew See Table 4.10 volume? Large jitter See Table 4.6 Reading See Table 4.7 position deviation? Image See Table 4.8 unclear Strange See Table 4.11...

  • Page 16: Tables

    4.2.2 Tables The tables in this section provide detailed troubleshooting information. 4.2.2.1 The Power LED does not go on Cause Relevant Unit Check Method Maintenance Method Unplugged from outlet None Visual check Insert the AC plug into the outlet. AC power unplugged None Visual check Insert the AC cable...
  • Page 17 4.2.2.2 Reading is not performed Cause Relevant Check Maintenance Method Unit Method cover open cover Visual check Close the cover. Table 4.4 4.2.2.3 Image does not appear Cause Relevant Check Maintenance Unit Method Method cover open cover Visual check Close the cover Power supply- None Visual check...
  • Page 18 4.2.2.4 Large jitter Cause Relevant Check Method Maintenance Unit Method Power supply- None Visual check Connect the main control connector. board connection failure Power supply fails Power Tester check Replace the power supply (+24V, GND) supply. Motor-main None Visual check Connect the control PCBA connector.
  • Page 19 4.2.2.6 Image unclear Cause Relevant Unit Check Method Maintenance Method Lamp too dark Lamp Visual check Replace with a new lamp. Dirt on Calibration Visual check Clean the glass with calibration reference plate isopropyl alcohol. reference plate Dirt on the Mirrors Visual check Clean the mirrors with...
  • Page 20 4.2.2.8 Frequent double feed and skew Cause Relevant Check Maintenance Method Unit Method Paper setting Operation Is the paper Teach users to properly failure error correctly set in position the paper the paper chute? Paper failure Operation Is the None error specified paper used...

  • Page 21: Cleaning The Scanner

    5. Cleaning the Scanner Cleaning the ADF Cleaning the Glass Cleaning the ADF From time to time, the reverse roller and the feeding rollers may be contaminated with ink, toner particles, or paper dust. In this case, the paper may not be fed smoothly. Please follow the following steps to clean the Reverse roller and the Feeding Rollers to ensure the best of the scanner.
  • Page 22 Wipe the feeding rollers until they are cleaned. Press both sides of the Cover of the ADF reverse roller and pull the cover down.

  • Page 23: Cleaning The Adf Glass

    Press and wipe the rollers one by one. Rotate the roller until the surfaces are completely cleaned. Cleaning the ADF Glass Press the ADF release button. Open the front door. Wet a clean cloth with some isopropyl alcohol. (95%) Wipe the glass as illustrated below by moving the swab from side to side to rid the dust or dirt.

  • Page 24: Disassembly

    6. DISASSEMBLY Procedure for Disassembly and Reassembly PROCEDURE FOR DISASSEMBLY AND REASSEMBLY 6.1.1 Notes on disassembly Clean the disassembly and assembly location. Disconnect the power cable and remove the AC plug from the outlet before disassembly and assembly. Follow the disassembly and assembly procedures. Never loosen the screws of parts that must not be disassembled.

  • Page 25: Removing The Output Tray

    6.1.2 Removing the Output Tray 1. Release the right tab of the output tray inwardly as illustrated to release the output tray from the main unit as indicated. 2. The output tray is removed. Output Tray...

  • Page 26: Removing The Input Tray

    6.1.3 Removing the Input Tray 1. Remove the Output Tray as described in the preceding section 6.1.2. 2. Press the ADF Release button and open the front cover.
  • Page 27 3. Push the two outer tabs on both sides of the input tray inwardly, as shown below:...
  • Page 28 4. The input tray is removed. Input Tray...

  • Page 29: Removing The Reverse Roller

    6.1.4 Removing the Reverse Roller 1. Remove the Input Tray as described in the preceding section 6.1.3. 2. Press both sides of the reverse roller cover, as shown below: 3. Pull the cover down, as shown below:...
  • Page 30 4. Lift the right end of the reverse roller and remove it from the notch as shown. Reverse Roller...

  • Page 31: Removing The Reverse Roller Cover

    6.1.5 Removing the Reverse Roller Cover Remove the reverse roller as described in the preceding section 6.1.4. Push the right side of the reverse roller cover inwardly, and remove the reverse roller cover, as shown below: Reverse Roller Cover...

  • Page 32: Removing The Front Cover

    6.1.6 Removing the Front Cover Remove the reverse roller cover as described in the preceding section 6.1.4. Remove 2 fixing screws on the upper base, as indicated below: (Torque：8±0.5Kgf.cm / Screw Type:TAP-2, 3x10 / PN: 077-1010-0) Detach 3 adjoining hooks from their slots on the front cover with a flat screw driver as shown.
  • Page 33 Lift the front cover to temporarily detach it from the scanner as shown. Disconnect the cable of the UI board to remove the front cover. (Tip: Unlock the black cable connector switch, and remove the cable.) 6-10...
  • Page 34 Front Cover Unlocking Connector Switch: Open the connector switch by lifting the switch up, as shown below: Remove the cable that is fixed on the connector switch, as shown below: 6-11...

  • Page 35: Removing The Ui Board

    6.1.7 Removing the UI Board Remove the Front Cover as described in the preceding section 6.1.6. Loosen 2 fixing screws on the UI board to remove the UI board, as indicated below: (Torque：6±0.5Kgf.cm / Screw Type: TS3x8 / PN: 077-8023-0) Warning: In case the buttons on the UI board may be lost, be sure to place the UI board with the buttons (5 pcs) facing up on a flat surface.
  • Page 36 UI Board Buttons Reassembling: For correct cable connection of the UI board, please refer to the drawing described in the preceding section 3.2.2. 6-13...

  • Page 37: Removing The Top Cover And Bottom Cover

    6.1.8 Removing the Top Cover and Bottom Cover 1. Remove 2 fixing screws on the top cover, as indicated below: Top Cover (Torque：8±0.5Kgf.cm / Screw Type: +B-H, TAP-2, 3x10 / PN: 077-1010-0) 2. Remove the top cover from the scanner unit. Top Cover 6-14...
  • Page 38 3. Remove 2 fixing screws on the bottom cover, as indicated below: Bottom Cover (Torque：6±0.5Kgf.cm / Screw Type: M3x6 / PN: 077-0603-0) 4. Lift the bottom cover to remove the bottom cover from the bottom base. 6-15...
  • Page 39 Bottom Cover 6-16...

  • Page 40: Removing The Left/Right Covers

    6.1.9 Removing the Left/Right Covers 1. Remove the front cover as described in the preceding section 6.1.6. 2. Remove the top cover and bottom cover as described in the preceding section 6.1.8. 3. Lift the upper base from the bottom base, as shown below: 4.
  • Page 41 5. Push the right cover to the right, and remove it. Left/Right Covers 6-18...

  • Page 42: Removing The Upper Base And Bottom Base

    6.1.10 Removing the Upper Base and Bottom Base 1. Remove the Left/Right Covers as described in the preceding section 6.1.9. 2. Disconnect the 2 cables from the main board. (Tip: Unlock the black cable connector switch, and remove the cable.) 3.
  • Page 43 4. Remove 2 fixing screws on the main board to detach the upper base from the bottom base, as indicated below: (Torque：6±0.5Kgf.cm / Screw Type: M3x6 / PN: 077-0603-0) Bottom Base Upper Base 6-20...
  • Page 44 Reassembling: While installing the upper base to the bottom base, align the 2 pins of the upper base with the 2 holes on the bottom base, and then install the upper base firmly to the bottom base. 2 pins on Upper Base 2 holes on Bottom Base 6-21...

  • Page 45: Removing The Glass Assembly From Upper Base

    6.1.11 Removing the Glass Assembly from Upper Base Remove the Upper base and Bottom Base as described in the preceding section 6.1.10. Press the 2 latches outward on both sides of the glass assembly, as shown below: Remove the glass assembly from the upper base. Glass Assembly (Upper Base) 6-22...

  • Page 46: Removing The Springs From Upper Base

    6.1.12 Removing the Springs from Upper Base Remove the Glass Assembly as described in the preceding section 6.1.11. Remove 2 springs from the upper base. Springs 6-23...

  • Page 47: Removing The Led Light Bar From Upper Base

    6.1.13 Removing the LED Light Bar from Upper Base 1. Remove the Springs as described in the preceding section 6.1.12. 2. Remove 2 fixing screws on the LED light bar, as indicated below: (Torque：8±0.5Kgf.cm / Screw Type: +B-H, TAP-2, 3x10 / PN: 077-1010-0) 3.
  • Page 48 4. Disconnect the cable from the LED light bar to remove the LED light bar. LED Light Bar (Upper Base) 6-25...

  • Page 49: Removing The Gear From Upper Base

    6.1.14 Removing the Gear from Upper Base Remove the Upper base and Bottom Base as described in the preceding section 6.1.10.. Press the hook inwardly, and remove the gear from the upper base, as shown below: Gear 6-26...

  • Page 50: Removing The Ccd Assembly From Upper Base

    6.1.15 Removing the CCD Assembly from Upper Base 1. Remove the Upper base and Bottom Base as described in the preceding section 6.1.10.. 2. Remove the fixing screw on the CCD assembly, as indicated below: (Torque：8±0.5Kgf.cm / Screw Type: +B-H, TAP-2, 3x10 / PN: 077-1010-0) 3.
  • Page 51 CCD Assembly (Upper Base) Reassembling: While connecting the flat cable back to the CCD board, tear off the back of the double-sided tape, and then follow the following graphs to fold the flat cable. Fold the flat cable in this way. The back of the double- sided tape is torn off.
  • Page 52 While connecting the cable of the CCD assembly (Upper Base), please refer to the cable connection drawing described in the preceding section 3.2.2. 6-29...

  • Page 53: Removing The Ultrasonic Transmitter From The Upper Base

    6.1.16 Removing the Ultrasonic Transmitter from the Upper Base 1. Remove the CCD Assembly as described in the preceding section 6.1.15. 2. Remove the fixing screw on the ultrasonic transmitter, as indicated below: (Torque：6±0.5Kgf.cm / Screw Type: M3x8 / PN: 077-8023-0) 3.

  • Page 54: Removing Sensor Board From Upper Base

    6.1.17 Removing Sensor board from Upper Base 1. Remove the Ultrasonic Transmitter as described in the preceding section 6.1.16. 2. Remove the fixing screw on the sensor board from the upper base, as indicated below: (Torque：6±0.5Kgf.cm / Screw Type: M3x8 / PN: 077-8023-0) 3.
  • Page 55 Reassembling: While connecting the flat cable back to the sensor board, fold the flat cable upward, as shown below: Fold the flat cable upward. While connecting the cable of the sensor board, please refer to the cable connection drawing described in the preceding section 3.2.2. 6-32...

  • Page 56: Removing The Conductive Brush

    6.1.18 Removing the Conductive Brush Remove the Upper base and Bottom Base as described in the preceding section 6.1.10. Tear off the conductive brush along the upper base. Conductive Brush Reassembling: 1. Once the conductive brush has been removed, it can not be reused. Please prepare a replacement to stick it on the upper base.

  • Page 57: Removing The Idle Roller/Metal Cover/Spring From The Upper Base

    6.1.19 Removing the Idle Roller/Metal Cover/Spring from the Upper Base 1. Remove the Upper base and Bottom Base as described in the preceding section 6.1.10. 2. Remove the 4 fixing screws on the metal cover from the upper base, as indicated below: (Torque：6±0.5Kgf.cm / Screw Type: M3x8 / PN: 077-8023-0) 3.
  • Page 58 Metal Cover 4. Remove the spring from the upper base, as indicated below: 5. Remove the 3 idle rollers from the slot in the upper base, as indicated below: 6-35...
  • Page 59 Idle Roller 6-36...

  • Page 60: Removing The Idle Roller/Metal Cover/Spring /Jam Sensor From The Upper Base

    6.1.20 Removing the Idle Roller/Metal Cover/Spring /Jam Sensor from the Upper Base 1. Remove the Upper base and Bottom Base as described in the preceding section 6.1.10. 2. Remove the 3 fixing screws on the metal cover from the upper base, as indicated below: (Torque：6±0.5Kgf.cm / Screw Type: M3x8 / PN: 077-8023-0) Metal Cover 6-37...
  • Page 61 3. Remove the spring from the upper base, as indicated below: 4. Remove the fixing screw on the upper base, as indicated below: (Torque：6±0.5Kgf.cm / Screw Type: M3x8 / PN: 077-8023-0) 6-38...
  • Page 62 5. Remove the jam sensor on the upper base, as indicated below: Jam Sensor 6-39...
  • Page 63 6. Remove the 3 idle rollers from the slot in the upper base, as indicated below: Idle Rollers 6-40...

  • Page 64: Removing The Plastic Hooks From The Upper Base

    6.1.21 Removing the Plastic Hooks from the Upper Base 1. Remove the Upper base and Bottom Base as described in the preceding section 6.1.10. 2. Remove the plastic hook from the one side of the upper base with a flat screw driver inserted to the inside of the washer, as indicated below: 3.

  • Page 65: Removing The Latch Hook From The Upper Base

    6.1.22 Removing the Latch Hook from the Upper Base 1. Remove the Upper base and Bottom Base as described in the preceding section 6.1.10. 2. Remove the 2 fixing screws on the shaft from the upper base, as indicated below: (Torque：6±0.5Kgf.cm / Screw Type: M3x6.5 / PN: 077-0636-0) 3.
  • Page 66 4. Pull out the shaft from its right end to let the latch hook and its spring fall off, as shown below: Latch Hook and Spring are falling off. Spring Latch Hook Shaft 6-43...

  • Page 67: Removing The Paper-In Sensor From The Upper Base

    6.1.23 Removing the Paper-in Sensor from the Upper Base 1. Remove the Upper base and Bottom Base as described in the preceding section 6.1.10. 2. Remove the paper-in sensor cable along the slot, as shown below: 3. Remove the paper-in sensor together with its cable from the slot, as shown below: Paper-in Sensor Reassembling: For correct cable connection of the paper-in sensor, please refer to the drawing described in the...
  • Page 68 Reassembling: While installing the paper-in sensor back to the upper base, be sure to insert the paper-in sensor cable (indicated as a blue line) into the narrow slot in the upper base, as shown below: 6-45...

  • Page 69: Removing The Short Shaft From The Upper Base

    6.1.24 Removing the Short Shaft from the Upper Base 1. Remove the Upper base and Bottom Base as described in the preceding section 6.1.10. 2. Remove the short shaft from the hole on the upper base, as shown below: Short Shaft 6-46...

  • Page 70: Removing The Roller Holder And Spring From The Upper Base

    6.1.25 Removing the Roller Holder and Spring from the Upper Base 1. Remove the Upper base and Bottom Base as described in the preceding section 6.1.10. 2. Pull out the tab until the roller holder releases from the upper base, as shown below: 6-47...
  • Page 71 3. Remove the roller holder from the upper base, as shown below: Roller Holder 6-48...
  • Page 72 4. Push the spring to the right, and remove the spring from the slot on the upper base, as shown below: Spring 6-49...

  • Page 73: Removing The Top Cover From The Bottom Base

    6.1.26 Removing the Top Cover from the Bottom Base Remove the Upper base and Bottom Base as described in the preceding section 6.1.10. Have the surface of the top cover convex by pressing the 2 sides of the top cover outward, and remove the top cover, as shown below: Top Cover 6-50...

  • Page 74: Removing The Long Spring From The Bottom Base

    6.1.27 Removing the Long Spring from the Bottom Base Remove the Top Cover as described in the preceding section 6.1.8. Remove the long spring along the slot from the bottom base, as shown below: Long Spring 6-51...
  • Page 75 Reassembling: While installing the long spring back to the bottom base, insert the long spring into the narrow slot with its 2 ends into the 2 slots for the top cover, as shown below: Be sure the protruding part (the blue thing enlarged) of the long spring is kept into place. Insert 2 ends into for the top cover.

  • Page 76: Removing The Roller Cover From The Bottom Base

    6.1.28 Removing the Roller Cover from the Bottom Base 1. Remove the Upper base and the Bottom Base as described in the preceding section 6.1.10. 2. Pull out the center of the roller cover to open it. 3. Have the surface of the roller cover convex by pressing two sides of the roller cover outward, and remove the roller cover, as shown below: 6-53...
  • Page 77 Roller Cover 6-54...

  • Page 78: Removing The Pick-Up Roller And Adf Roller From The Bottom Base

    6.1.29 Removing the Pick-up Roller and ADF Roller from the Bottom Base Remove the Input Tray as described in the preceding section 6.1.3. Pull the center of the roller cover to open it. Move the tab of the ADF roller UP as indicated. 6-55...
  • Page 79 Detach the right end of the ADF roller from the scanner and remove the ADF roller. Hold the right end of the pick-up roller to detach it from the slot. 6-56...
  • Page 80 ADF Roller Pick-up Roller Reassembling: Before installing the pick-up roller back to the bottom base, be sure to lubricate the areas (indicated in yellow) with MS-54 oil as illustrated. While installing the ADF roller back to the bottom base, mount the copper sleeve at one end of the ADF roller to the clamp first.

  • Page 81: Removing The Shaft Mount From The Bottom Base

    6.1.30 Removing the Shaft Mount from the Bottom Base 1. Remove the Pick-up Roller and ADF Roller as described in the preceding section 6.1.29. 2. Remove the 2 fixing screws on the shaft mount from the bottom base, as indicated below: (Torque：8±0.5Kgf.cm / Screw Type: +B-H, TAP-2, 3x10 / PN: 077-1010-0) 3.
  • Page 82 Shaft Mount 6-59...

  • Page 83: Removing The Glass Assembly From The Bottom Base

    6.1.31 Removing the Glass Assembly from the Bottom Base 1. Remove the Input Tray as described in the preceding section 6.1.3. 2. Remove the 4 fixing screws on the glass assembly from the bottom base, as indicated below: (Torque：6±0.5Kgf.cm / Screw Type: +B-H, TAP-2, M3x8 / PN: 077-0802-0) 3.
  • Page 84 Glass Assembly (Bottom Base) 6-61...

  • Page 85: Removing The Belt From The Bottom Base

    6.1.32 Removing the Belt from the Bottom Base 1. Remove the Left/Right Covers as described in the preceding section 6.1.9. 2. Loosen the 2 fixing screws on the plate from the bottom base, as indicated below: (Torque：8±0.5Kgf.cm / Screw Type: +B-H, TAP-2, M3x8 / PN: 077-1010-0) 3.
  • Page 86 Short Belt 4. Loosen the fixing screw on the plate from the bottom base, as indicated below: (Torque：8±0.5Kgf.cm / Screw Type: +B-H, TAP-2, M3x8 / PN: 077-1010-0) 5. Remove the long belt from the 3 gears as indicated below: 6-63...
  • Page 87 Long Belt 6. Remove the fixing screw on the plate from the bottom base, as indicated below: (Torque：8±0.5Kgf.cm / Screw Type: +B-H, TAP-2, 3x10 / PN: 077-1010-0) 6-64...
  • Page 88 7. Release the spring on the plate by pushing out the spring hook, as shown below: Plate with the Idle Spring Pulley 6-65...
  • Page 89 Reassembling: Install the belt to the pulleys and gears with the smooth side facing upward, as shown. Smooth side facing upward Plug one end of the spring hook into the bottom base, elongate the other end to touch the metal plate, and adjust the plate to an appropriate tightness Plate The spring hook is plugged into the bottom base.

  • Page 90: Removing The Feeding Rollers From The Bottom Base

    6.1.33 Removing the Feeding Rollers from the Bottom Base 1. Remove the Glass Assembly as described in the preceding section 6.1.11. 2. Rotate the right end of the feeding roller 90 degrees clockwise from the bottom base, as indicated below: 6-67...
  • Page 91 3. Remove the feeding roller from the bottom base, as indicated below: 4. Rotate the left end of the other feeding roller 90 degrees clockwise from the bottom base, as indicated below: 6-68...
  • Page 92 5. Remove the other feeding roller from the bottom base, as indicated below: Feeding Rollers 6-69...

  • Page 93: Removing The Led Light Bar From The Bottom Base

    6.1.34 Removing the LED Light Bar from the Bottom Base 1. Remove the Feeding Rollers as described in the preceding section 6.1.33. 2. Remove 2 fixing screws on the LED light bar, as indicated below: (Torque：8±0.5Kgf.cm / Screw Type: +B-H, TAP-2, 3x10 / PN: 077-1010-0) 3.

  • Page 94: Removing The Main Board

    6.1.35 Removing the Main Board 1. Remove the Upper base and Bottom Base as described in the preceding section 6.1.10. 2. Remove 2 fixing screws on the main board, as indicated below: (Torque：6±0.5Kgf.cm / Screw Type: +R-H, M3x6 / PN: 077-0603-0) 3.
  • Page 95 Main Board Reassembling: While connecting the main board, have the 2 flat cables from the 2 CCD assemblies respectively through the 2 EMI cores, and then connect them to the main board, as shown below: Make 2 flat cables pass through the 2 EMI cores respectively...

  • Page 96: Removing The Bottom Cover

    6.1.36 Removing the Bottom Cover 1. Remove the Left/Right Covers as described in the preceding section 6.1.9. 2. Remove 3 fixing screws on the right side of the bottom base, as indicated below: a：(Torque：6±0.5Kgf.cm / Screw Type: +R-H, M3x6 / PN: 077-0603-0) b：(Torque：6±0.5Kgf.cm / Screw Type: +P-H, M3x10 / PN: 077-1001-0) 3.
  • Page 97 Bush 4. Remove the bottom cover from the bottom base, as shown below: Bottom Cover 6-74...

  • Page 98: Removing The Ccd Assembly From The Bottom Base

    6.1.37 Removing the CCD Assembly from the Bottom Base 1. Remove the Bottom Cover as described in the preceding section 6.1.8. 2. Remove the fixing screw on the CCD assembly, as indicated below: (Torque：8±0.5Kgf.cm / Screw Type: +B-H, TAP-2, 3x10 / PN: 077-1010-0) 3.
  • Page 99 CCD Assembly (Bottom Base) Reassembling: While connecting the cable of the CCD assembly (Bottom Base), please refer to the drawing as described in the preceding section 3.2.2, Cable Connection. 6-76...

  • Page 100: Removing The Ultrasonic Receiver From The Bottom Base

    6.1.38 Removing the Ultrasonic Receiver from the Bottom Base 1. Remove the CCD Assembly as described in the preceding section 6.1.15. 2. Remove 2 fixing screws on the ultrasonic receiver, as indicated below: (Torque：6±0.5Kgf.cm / Screw Type: +B-H, TAP-2, M3x8 / PN: 077-0802-0) 3.

  • Page 101: Removing The Motor Assembly From The Bottom Base

    6.1.39 Removing the Motor Assembly from the Bottom Base 1. Remove the Left/Right Covers as described in the preceding section 6.1.9. 2. Remove 2 fixing screws on the plate, as indicated below: (Torque：8±0.5Kgf.cm / Screw Type: +B-H, TAP-2, 3x10 / PN: 077-1010-0) 3.
  • Page 102 Motor Assembly Reassembling: Before connecting the motor cable to the main board, wind the motor cable for a few loops as shown: Wind the motor cable for a few loops 6-79...

  • Page 103: Removing The Motor From The Bottom Base

    6.1.40 Removing the Motor from the Bottom Base 1. Remove the Left/Right Covers as described in the preceding section 6.1.9. 2. Remove 2 fixing screws on the motor bottom cover, as indicated below: (Torque：6±0.5Kgf.cm / Screw Type: +R-H, M3x6 / PN: 077-0603-0) 3.
  • Page 104 Motor 6-81...

  • Page 105: Removing The Input Tray Hinges From The Bottom Base

    6.1.41 Removing the Input Tray Hinges from the Bottom Base 1. Remove the Left/Right Covers as described in the preceding section 6.1.9. 2. Hold and remove 2 input tray hinges on the 2 upper sides of the bottom base, as indicated below: Input Tray Hinges 6-82...

  • Page 106: Checking Conductivity After Replacement Of Metal Parts

    6.1.42 Checking Conductivity After Replacement of Metal Parts Check conductivity with a multi-meter for metal parts such as ADF Roller, Feeding Roller and ADF Pad after replacement: Turn on a multi-meter and connect probes (if necessary). The negative probe is black and the positive will be red.
  • Page 107 Pickup Roller ADF Roller Metal Part on Roller Cover 6-84...
  • Page 108 If there is conductivity, the multi-meter should make a tone. Turn the meter off when not in use and store probes lest they may be damaged. 6-85...

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