Sharp AR-M550 (serv.man12) Service Manual ▷ View online
AR-M550/M620 DETAILS OF EACH SECTION 6 - 96
5) Remove the lens cover.
6) Cary out cleaning of the lens and CCD.
7) Cary out cleaning of the reflector.
a-6. Scanner dry heater
1) Remove the table glass. (See “a-1. Table glass” in this section)
2) Shift the lamp unit. (See “a-3. Mirror” in this section)
3) Remove the harness clamp, and remove the scanner dry heater.
a-7. Rails
1) Remove the table glass. (See “a-1. Table glass” in this section)
2) Grease up the rails.
a-8. Drive belt
a-9. Drive wire
a-10. Pulley
1) Remove the table glass. (See “a-1. Table glass” in this section)
2) Check the drive belt, drive wire and pulley
a-11. Scanner lamp
1) Remove the table glass. (See “a-1. Table glass” in this section)
2) Remove the core guide to shift the optical lamp unit to the base
plate cutout section.
AR-M550/M620 DETAILS OF EACH SECTION 6 - 97
3) Remove the front side connector.
4) Turn up the cutout mylar and remove the screw; then shift the lamp
holder to the front side and take out the lamp from above on the
rear side.
rear side.
5) Remove the harness connector from the hole on the front side.
a-12. Inverter PWB
1) Remove the table glass. (See “a-1. Table glass” in this section)
2) Remove the core guide.
3) Unhook the claw to remove the plastic members on the rear side.
4) While holding to prevent from falling, remove the screw fixing to
remove the inverter PWB.
5) Disconnect the lamp connectors.
6) Release the connector lock on the inverter PWB to remove the FC
cable.
7) When attaching, place each harness on the rib.
a-13. CCD lens unit
1) Remove the table glass. (See “a-1. Table glass” in this section)
2) Remove the black box.
3) Mark the lens unit plate position by pen.
4) Release the connector lock on the CCD PWB to remove the FFC
cable.
5) Remove the screw to remove the CCD PWB lens unit.
6) Attach the CCD PWB lens unit to the marked position.
AR-M550/M620 DETAILS OF EACH SECTION 6 - 98
a-14. Scanner relay PWB
1) Remove the table glass. (See “a-1. Table glass” in this section)
2) Remove the harness cover B.
3) Disconnect the connector, and remove the scanner interface PWB.
a-15. Scanner motor
1) Remove the rear cabinet.
2) Remove the spring and disconnect the connector.
3) Remove the scanner motor unit.
4) Remove the scanner motor.
a-16. Scanner FLASH PWB
a-17. Scanner control PWB
1) Remove the rear cabinet. (See “a-15. Scanner motor” in this sec-
tion)
2) Release the lock, and remove the scanner Flash PWB.
3) Remove the clamp, and disconnect the connector.
AR-M550/M620 DETAILS OF EACH SECTION 6 - 99
4) Remove the scanner control PWB unit.
5) Remove the scanner control PWB.
a-18. SPF open/close detector
1) Remove the rear cabinet. (See “a-15. Scanner motor” in this sec-
tion)
2) Disconnect the connector, and remove the SPF open/close detec-
tor.
a-19. Scanner home position sensor detector
1) Remove the rear cabinet. (See “a-15. Scanner motor” in this sec-
tion)
2) Remove the SPF harness holder B.
3) Disconnect the connector, and remove the scanner home position
sensor.
a-20. Document size detection light emitting PWB
1) Remove the SPF unit. (See “a. SPF unit” in the “7. SPF section”)
2) Disconnect the connector and the earth terminal, and remove the
upper cabinet rear.
3) Remove the document detection fulcrum TIG, and remove the doc-
ument detection arm unit.
4) Remove the document detection arm lower, and remove the docu-
ment detection light emitting unit.
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