Error Troubleshooting
Xerox Internal Use Only Phaser 7100 Service Manual 2-239
(Y/ M/ C) Drum Motor Failure
The port status changed when the Drum Motor has an error. This is always monitored.
Applicable Fault Code
• 042-347: Drum YMC Motor Drive Fail
Initial Actions
• Power cycle the printer.
• If the problem persists, perform the following procedure.
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
• Imaging Unit (Y/ M/ C), PL 6.1.1
• Drum Motor (PR Drive Assembly) (Y/ M/ C), PL 11.1.2
•PR Harness Assembly (Y/ M/ C), PL 11.1.22
• MCU PWB, PL 12.1.15
• LVPS PWB, PL 12.2.1
• Developer Fan, PL 12.2.16
• Main Harness Assembly, PL 12.3.1
• Drive 1 on page 7-43
Troubleshooting Procedure
Step Actions and Questions Yes No
1. Check the installation state of the Imaging Unit
(Y / M / C) (REP 6.0 Imaging Unit (Y/ M/ C/ K) on
page 4-121).
Is the Imaging Unit (Y / M / C) installed properly,
with no contamination at the contact points and
it is in contact with the left and right Guides?
Go to step 2. Clean the contact
points.
Reinstall the Imaging
Unit (Y / M / C).
2. Check the Drum Motor (Y / M / C) operation.
Perform DC330 Component Control on
page 2-26 [071-001] to check the rotation of the
Drum Motor (Y / M / C).
Is the Drum working properly?
Replace the MCU PWB
(REP 12.4 MCU PWB
on page 4-206).
Go to step 3.
3. Check the installation of the Drum Motor (Y / M /
C) (REP 11.1 PR Drive Assembly (Y/ M/ C) on
page 4-185).
Manually rotate the Drum Motor (Y / M / C).
Doe the Motor rotate?
Reinstall the Drum
Motor (Y / M / C).
Go to step 4.
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