Xerox M20 - WorkCentre B/W Laser, Service Manual

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December 2006
2-4 WorkCentre M20, 4118, FaxCentre 2218 Family
1.1
Status Indicator RAPs
NOTE: A cold fuser heat roll will have a resistance of approximately 46 ohms (220V/
240V) or approximately 14 ohms (110V).
Check the wiring between CON2 on the SMPS and the IPR - terminal fuser, PL 4.17 Item
8. Install new components as necessary:
• CBF harness - AC wire, PL 4.17 Item 1.
• ELA HOU - frame main assembly, PL 4.15 Item 1.
7. Switch off the power to the machine. Reconnect CON3 onto the SMPS. Disconnect all
connectors on the PBA main other than CN16.
8. Switch on the power to the machine. If the machine switches on, go to step 10. If the
machine fails to switch on, perform step 9.
9. Switch off the power to the machine. Reconnect all connectors to the PBA main. Discon-
nect all connectors on the HVPS other than CN1. Sequentially reconnect each connector
onto the HVPS. If the faulty circuit is identified, repair the wiring or install components as
necessary. If the machine still fails to switch on, install a new HVPS, PL 1.15 Item 10.
10. Reconnect each connector onto the PBA main other than CN3. Switch on the power to
the machine. If the machine fails to switch on, perform step 11. If the machine switches
on, go to step 12.
11. Switch off the power to the machine. Disconnect all connectors on the PBA SUB - D SUB
other than CN1. Sequentially reconnect each connector onto the PBA SUB - D SUB. If the
faulty circuit is identified, repair the wiring or install components as necessary.
12. Switch off the power to the machine. Reconnect all connectors on the PBA SUB - D SUB.
Sequentially reconnect each connector onto the PBA main. If the faulty circuit is identified,
repair the wiring or install components as necessary. If the machine still fails to switch on,
install a new PBA main, PL 1.15 Item 9.
13. If the fault is still present, install a new SMPS, PL 1.15 Item 4.
2218 Checkout
NOTE: Throughout this procedure, where further steps require the reconnection of a compo-
nent, ensure they are reconnected before performing the next step.
Refer to Wiring Diagram 8, Wiring Diagram 13, Wiring Diagram 14, Wiring Diagram 15 and
Wiring Diagram 16. Perform the following:
1. Ensure the supply voltage is correct. If possible, connect the machine to a known good
power supply. If the original power supply is faulty, inform the customer.
2. Disconnect the power cord from the power outlet and the machine. Check the continuity
of the power cord. If necessary, install a new power cord, PL 1.15 Item 16.
3. Disconnect CON1 on the SMPS. Check for AC supply voltage between pins 1 and 2 on
the connector. If necessary, install a new CBF power switch grey, PL 1.20 Item 2.
4. Check the voltage at both sides of fuse F01 on the SMPS, 110V (NASG) or 220/240V
(XE).
If necessary, install a new SMPS, PL 1.20 Item 23.
5. Switch off the power to the machine. Disconnect CON3 on the SMPS.
6. Switch on the power to the machine. If the machine switches on, go to step 8. If the
machine fails to switch on, perform step 7.
7. Remove the ELA HOU - fuser assembly, PL 10.15 Item 1. Check for continuity across the
fuser heat roll. If necessary, install a new ELA HOU - fuser assembly, PL 10.15 Item 1.
NOTE: A cold fuser heat roll will have a resistance of approximately 46 ohms (220V/
240V) or approximately 14 ohms (110V).
Check the wiring between CON2 on the SMPS and the SMPS - PSP fuser, PL 1.20 Item
4.
Check the wiring between CON52 on the SMPS - PSP fuser and the IPR - terminal fuser,
PL 4.17 Item 8. Install new components as necessary:
• CBF harness - AC wire, PL 4.17 Item 1.
• SMPS - PSP fuser, PL 1.20 Item 4.
• ELA HOU - frame main assembly, PL 4.15 Item 1.
8. Switch off the power to the machine. Reconnect CON3 onto the SMPS. Disconnect all
connectors on the PBA main other than CN19.
9. Switch on the power to the machine. If the machine switches on, go to step 11. If the
machine fails to switch on, perform step 10.
10. Switch off the power to the machine. Reconnect all connectors to the PBA main. Discon-
nect all connectors on the HVPS other than CN1. Sequentially reconnect each connector
onto the HVPS. If the faulty circuit is identified, repair the wiring or install components as
necessary. If the machine still fails to switch on, install a new HVPS, PL 1.20 Item 10.
11. Reconnect each connector onto the PBA main other than CN11. Switch on the power to
the machine. If the machine fails to switch on, perform step 12. If the machine switches
on, go to step 13.
12. Switch off the power to the machine. Disconnect all connectors on the PBA SUB - D SUB
other than CN5. Sequentially reconnect each connector onto the PBA SUB - D SUB. If the
faulty circuit is identified, repair the wiring or install components as necessary.
13. Switch off the power to the machine. Reconnect all connectors on the PBA SUB - D SUB.
Sequentially reconnect each connector onto the PBA main. If the faulty circuit is identified,
repair the wiring or install components as necessary. If the machine still fails to switch on,
install a new PBA main, PL 1.20 Item 9.
14. If the fault is still present, install a new SMPS, PL 1.20 Item 23.