Lexmark X940e Owners Manual
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Repair information4-139 7510 Go Back Previous Next ADF left cover assembly removal 1. Open the ADF left cover assembly. 2. Remove the ADF front cover assembly. See “ADF front cover assembly removal” on page 4-138. 3. Remove the ADF rear cover. See “ADF rear cover removal” on page 4-138. 4. Remove the ADF left cover media guide. See “ADF left cover media guide removal” on page 4-151. 5. Remove the screw securing the harness retainer (A). 6. Remove the harness retainer (A). 7. Remove the screw securing the left cover hinge retainer (B). 8. Remove the left cover hinge retainer (B). 9. Remove the screw securing the front hinge pin (C). 10. Remove the front hinge pin (C). 11. While holding the ADF left cover assembly, remove the rear hinge pin with needle nose pliers (D), and remove the ADF left cover assembly (E) from the ADF. Warning: Do not allow the ADF left cover assembly (E) to hang by the harness, or damage will occur. 12. Remove the left cover pinch roll assembly. See “Left cover pinch roll assembly removal” on page 4-141. 13. Disconnect the connector from the sensor (pick roll position HP) (F) located on the ADF left cover assembly (E). 14. Remove the screw from the green ground wire (G). 15. Remove the screw securing the grounding plate (H). 16. Remove the grounding plate (H). 17. Remove the two screws securing the harness guide (I). 18. Detach the harness guide (I). 19. Disconnect the connector from the pick roll position motor assembly (J). 20. Remove the harness from the rectangular opening of the side of the ADF left cover assembly. Note: Before reinstalling the ADF left cover assembly (E), ensure that the harness is properly routed and is not pinched. Note: Ensure that the harnesses are properly captured by the harness guide (I). Note: Ensure that the green ground wire (G) and the grounding plate (H) are reconnected. Note: Ensure that the ADF left cover assembly (E) opens and closes without binding. Note: Ensure that the spring (K) attached to the feed/pick roll assembly (L) is properly reinstalled. A B E C D Front Rear Left side
4-140Service Manual 7510 Go Back Previous Next ADF left cover handle removal 1. Open the ADF left cover assembly. 2. Remove the ADF left cover media guide. See “ADF left cover media guide removal” on page 4-151. 3. Remove the ADF left cover media guide. See “ADF left cover media guide removal” on page 4-151. 4. Remove the ADF feed/pick assembly. See “ADF feed/pick roll assembly removal” on page 4-149. 5. Remove the sheet through actuator. See “Sheet through actuator removal” on page 4-147. 6. Remove the document set actuator. See “Document set actuator removal” on page 4-150. 7. Remove the pick roll position motor assembly. See “Pick roll position motor assembly removal” on page 4-151. Note: The pick roll position motor assembly does not need to be completely removed; it can be allowed to hand loosely out of the way. 8. Remove the two screws securing the plastic harness guide (A) to the assembly. Note: The plastic harness guide (A) does not need to be completely removed; it can be allowed to hand loosely out of the way. 9. Remove the spring (B) from the ADF left cover handle (C). 10. Remove the two screws securing the front bracket (D) to the assembly. 11. Remove the front bracket (D). 12. Remove the two screws securing the rear bracket (E) to the assembly. 13. Remove the rear bracket (E). Note: The grounding plate (F) will become detached. 14. Gently pry or push the ADF left cover handle (C) from the front and rear mounting points in the assembly. 15. Remove the ADF left cover handle (C). J I EConnector G ConnectorF K L H
Repair information4-141 7510 Go Back Previous Next Replacement note: Ensure that the grounding plate (E) is properly reattached. Left cover pinch roll assembly removal 1. Open the ADF left cover assembly. 2. Disconnect the connector from the sensor (pick roll position HP) (A). 3. Remove the three screws securing the left cover pinch roll assembly (B). 4. Remove the left cover pinch roll assembly (A). ADF feed drive motor assembly removal 1. Open the ADF left cover assembly. 2. Lift the document tray assembly. 3. Remove the ADF rear cover. See “ADF rear cover removal” on page 4-138. 4. Remove the ADF registration motor. See “ADF registration motor removal” on page 4-166. 5. Disconnect the three connectors from the ADF dual drive motor assembly (A). 6. Remove the screw securing the harness guide (B) to the ADF. 7. Remove the two screws securing the ADF dual drive motor assembly (A) to the base of the ADF. 8. Remove the two screws securing the ADF dual drive motor assembly (A) to the rear of the ADF. 9. Remove the stud screw securing the ADF dual drive motor assembly (A) to the rear of the ADF. 10. Remove the plastic support (C). C E B A F D A Front B Connector
4-142Service Manual 7510 Go Back Previous Next 11. Remove the connectors P751, P754, P755, P758, P761, P785 and P786 from the ADF controller card assembly (D). 12. Remove the harness guide (B) containing the harnesses, and swing it out of the way. 13. Remove the ADF dual drive motor assembly (A) from the ADF. Media scan guide removal 1. Open the ADF unit assembly. 2. Remove the screw securing the media scan guide (A) to the ADF unit assembly. 3. Remove the media scan guide (A). 4. Remove the two media scan guide springs (B) from the media scan guide (A). ADF media feed assembly removal 1. Remove the platen cushion assembly. See “Platen cushion removal” on page 4-137. 2. Remove the ADF unit assembly. See “ADF unit assembly removal” on page 4-136. 3. Remove the ADF front cover assembly. See “ADF front cover assembly removal” on page 4-138. 4. Remove the ADF rear cover. See “ADF rear cover removal” on page 4-138. 5. Remove the ADF left cover media guide. See “ADF left cover media guide removal” on page 4-151. 6. Remove the left cover pinch roll assembly. See “Left cover pinch roll assembly removal” on page 4-141. 7. Remove the ADF left cover assembly. See “ADF left cover assembly removal” on page 4-139. P760P759P758 P785 P761 P751P752P753P754 P755 P786 P756 P757 A D A C BConnectors Stud screw A B
Repair information4-143 7510 Go Back Previous Next 8. Remove the document tray assembly. See “Document tray assembly removal” on page 4-144. 9. Disconnect connectors P754, P755, P758, P761, P785, and P786 from the ADF controller card assembly (A). 10. Loosen the set screw securing the damper (B) with an Allen wrench. 11. Remove the damper (B). 12. Disconnect the two connections from the switch (ADF left cover interlock) (D) with needle nose pliers. 13. Disconnect the connector from the document set LED (E). 14. Disconnect the connector from the inverter solenoid assembly (F). 15. Release the harness from the three clamps. 16. Remove the two front screws and the five rear screws securing the ADF media feed assembly (G) to the ADF. 17. Release the two harness from the clamp molded into the base of the ADF. Note: The above clamp is located beneath the ADF registration motor. Do not excessively bend the clamp, or it may break. 18. Remove the ADF media feed assembly (G) from the ADF. Note: The plunger in the inverter solenoid assembly (F) will become detached. Replacement note: Before reinstalling the ADF media feed assembly (G), ensure that the harnesses are reinserted into their appropriate clamps. Replacement note: Ensure that the plunger is properly reinserted into the inverter solenoid assembly (F). Replacement note: Ensure that all connections are properly reconnected. Replacement note: When replacing the complete ADF media feed assembly, first remove the ADF left cover assembly and the ADF registration motor from the replacement part. P758P786P755 P785 P761 P754 Clamp BSet screw Connectors F ConnectorsA Clamp G B E D F Clamps Front Rear
4-144Service Manual 7510 Go Back Previous Next Document tray assembly removal 1. Remove the ADF front cover assembly. See “ADF front cover assembly removal” on page 4-138. 2. Remove the ADF rear cover. See “ADF rear cover removal” on page 4-138. 3. Open the ADF left cover assembly. 4. Release the wire clamp (A) that binds the harnesses together. 5. Disconnect the two connectors P759 and P760 from the ADF controller card assembly (B). 6. Remove the screw securing the green ground wire (C). 7. Remove the screw securing the document tray hinge (D). 8. Remove the document tray hinge (D). 9. Move the document tray assembly (E) upward to detach it from the ADF. 10. Remove the document tray assembly (E). 11. Remove the harness from the round opening in the ADF. Replacement note: Before reinstalling the document tray assembly, ensure all connections are properly reconnected. Replacement note: Ensure the green ground wire (C) is reconnected. D EC A BFront Connectors
Repair information4-145 7510 Go Back Previous Next ADF controller card assembly removal 1. Remove the ADF rear cover. See “ADF rear cover removal” on page 4-138. 2. Disconnect all connectors from the ADF controller card assembly (A). 3. Remove the five screws securing the ADF controller card assembly (A). 4. Remove the ADF controller card assembly (A). Replacement note: Ensure that all connections are properly reconnected. Replacement note: Ensure that the ground wire is reconnected. P760P759P758 P785 P761 P751P752P753P754 P755 P786 P756 P757 A Rear Ground wire
4-146Service Manual 7510 Go Back Previous Next Inverter solenoid assembly removal 1. Open the ADF left cover assembly. 2. Remove the ADF front cover assembly. See “ADF front cover assembly removal” on page 4-138. 3. Loosen the set screw securing the damper (A). 4. Remove the damper (A). 5. Disconnect the connector from the inverter solenoid assembly (B). 6. Remove the screw securing the inverter solenoid assembly (B). 7. Remove the inverter solenoid assembly (B). 8. Remove the plunger from the inverter lever (C). Note: Before reinstalling the inverter solenoid assembly (B), ensure that the plunger is properly inserted into the inverter solenoid assembly (B) and attached to the inverter lever (C). A Set screw B Connector C Front Plunger
Repair information4-147 7510 Go Back Previous Next Document set LED removal 1. Open the ADF left cover assembly. 2. Remove the ADF front cover assembly. See “ADF front cover assembly removal” on page 4-138. 3. Disconnect the connector from the document set LED (A). 4. Remove the screw securing the document set LED (A). 5. Remove the document set LED (A). Sheet through actuator removal 1. Open the ADF left cover assembly. 2. Remove the ADF left cover media guide. See “ADF left cover media guide removal” on page 4-151. 3. Remove the ADF feed/pick roll assembly. See “ADF feed/pick roll assembly removal” on page 4-149. 4. Remove the screw from the green ground wire (A). 5. Remove the screw securing the grounding plate (B). 6. Remove the grounding plate (B). 7. Remove the two screws securing the harness guide (C). 8. Remove the harness guide (C). 9. Remove the screw securing the pick roll position motor assembly (D). 10. Remove the pick roll position motor assembly (D). 11. Remove the screw securing the rear bracket (E). Warning: Shims may be present under the rear bracket (E) and may possibly fall out. Note the locations of any shims. 12. Remove the rear bracket (E). 13. Gently pry the sheet through actuator (F) out of the ADF left cover assembly. 14. Remove the sheet through actuator (F). ConnectorA Front
4-148Service Manual 7510 Go Back Previous Next Replacement note: Before reinstalling the rear bracket (E), replace any shims that were originally present. Sensor (pick roll position HP) removal 1. Open the ADF left cover assembly. 2. Remove the ADF left cover media guide. See “ADF left cover media guide removal” on page 4-151. 3. Disconnect the connector from the sensor (pick roll position HP) (A). 4. Release the hooks securing sensor (pick roll position HP) (A) to the ADF left cover assembly (B). 5. Remove the sensor (pick roll position HP) (A). C F A DF E B Spring B A Connector