Drum Crum Y Communication Fail - Xerox Phaser 7500 Service Manual

Error Messages and Codes

Drum CRUM Y Communication Fail

Applicable Chain-Link Code
Initial Actions
3-256
Communication failure with Drum (Y) was detected.
• 091-917: Drum CRUM Y Communication Fail
• Power cycle the printer.
• If the problem persists, follow the procedure below.
Troubleshooting Reference
Applicable Parts
Drum CRUM Coupler Assy (Y),
■
PL8.1.3
Imaging Unit, PL8.1.4
■
MCU PWB, PL18.3.6
■
Motor Drive PWB, PL18.3.7
■
1. Turn the power Off and On.
2. Check the following:
• The connection between the Motor Drive PWB J526 and the Drum CRUM
Coupler Assembly (Y) P112 for open circuit, short circuit, and poor contact.
• The connection terminals between the Drum (Y) CRUM PWB and the
Drum CRUM Coupler Assembly (Y) CRUM for damage and debris.
• The Drum (Y) CRUM PWB for contamination or disengagement.
• The Imaging Unit (Y) for improper installation.
3. If no problems are found, replace the following parts in sequence:
• Imaging Unit (Y) (REP 1.2,
• Drum CRUM Coupler Assembly (Y) (PL8.1.3)
• Motor Drive PWB (REP 18.13,
• MCU PWB (REP 18.12,
Wiring and Plug/Jack Map References
page 8-10)
page 8-204)
page 8-202)
Phaser 7500 Printer Service Manual