Xerox M20 - WorkCentre B/W Laser, Руководство по обслуживанию

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December 2006
2-3 WorkCentre M20, 4118, FaxCentre 2218 Family
1.1
Status Indicator RAPs
1.1 Power Failure RAP
Use this RAP to identify the cause of a power supply failure.
Procedure
WARNING
Switch off the electricity to the machine. Disconnect the power cord from the customer
supply while performing tasks that do not need electricity. Electricity can cause death or
injury. Moving parts can cause injury.
WARNING
Take care when measuring AC mains (line) voltage. Electricity can cause death or injury.
WARNING
Do not switch on the electricity to the machine while a ground circuit is disconnected.
Ground circuits ensure that the machine remains safe during a fault condition.
NOTE: If necessary, refer to GP 20 for the acronym list and cross reference lists of more com-
monly recognised part names.
Go to the relevant procedure:
• M20F Checkout
• 4118 Checkout
• 2218 Checkout
M20F 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 1, Wiring Diagram 2, Wiring Diagram 3 and Wiring Diagram 4. Per-
form 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 1.12 Item 5.
3. Disconnect the inline connector between the CBF harness - inlet, PL 1.10 Item 3 and the
CBF power switch grey, PL 1.12 Item 2. Check for AC supply voltage between pins 1 and
2 on the inline connector. Repair the wiring as necessary.
4. Disconnect CON1 on the SMPS + HVPS. Check for AC supply voltage between pins 1
and 3 on the connector. If necessary, install a new CBF power switch grey, PL 1.12 Item
2.
5. Check the voltages at both sides of the fuses on the SMPS + HVPS:
• Fuse F1: 110V (NASG) or 220/240V (XE).
• Fuse F2: 110V (NASG) or 220/240V (XE).
• Fuse F3: 5VDC.
If necessary, install a new SMPS + HVPS, PL 1.12 Item 4.
NOTE: Fuses F1, F2 and F3 are not spared.
6. Switch off the power to the machine. Disconnect all harnesses on the SMPS + HVPS,
other than CON1 and CON2.
7. Switch on the power to the machine. If the machine switches on, go to step 9. If the
machine fails to switch on, perform step 8.
8. 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 + HVPS 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.
9. Switch off the power to the machine. Reconnect CON101 on the SMPS + HVPS.
10. Switch on the power to the machine. If the machine switches on, perform step 11. If the
machine fails to switch on, go to step 12.
11. Sequentially reconnect each connector onto the SMPS + HVPS. When the faulty circuit
has been identified, repair the wiring or install components as necessary.
12. Switch off the power to the machine. Reconnect all connectors to the SMPS + HVPS. Dis-
connect all connectors on the PBA main other than CN2. Switch on the power to the
machine. If the machine fails to switch on, perform step 13. If the machine switches on, go
to step 14.
13. 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.
14. 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 the following components as necessary:
• CBF harness - power + HVPS, PL 1.12 Item 3.
• PBA main, PL 1.10 Item 4.
15. If the fault is still present, install a new SMPS + HVPS, PL 1.12 Item 4.
4118 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 7, Wiring Diagram 8, Wiring Diagram 9, Wiring Diagram 10 and Wiring
Diagram 11. 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 1.15 Item 2.
4. Switch off the power to the machine. Disconnect CON3 on the SMPS.
5. Switch on the power to the machine. If the machine switches on, go to step 7. If the
machine fails to switch on, perform step 6.
6. 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.