Drum Crum K Communication Fail - Xerox Phaser 7500 Service Manual

Drum CRUM K Communication Fail

Phaser 7500 Printer Service Manual
Communication failure with Drum (K) was detected.
Applicable Chain-Link Code
• 091-914: Drum CRUM K Communication Fail
Initial Actions
• Power cycle the printer.
• If the problem persists, follow the procedure below.
Troubleshooting Reference
Applicable Parts
Drum CRUM Coupler Assy (K),
■
PL8.1.3
Imaging Unit (K), 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 (K) P115 for open circuit, short circuit, and poor contact.
• The connection terminals between the Drum (K) CRUM PWB and the
Drum CRUM Coupler Assembly (K) CRUM for damage and debris.
• The Drum (K) CRUM PWB for contamination or disengagement.
• The Drum (K) for improper installation.
3. If no problems are found, replace the following parts in sequence:
• Imaging Unit (K) (REP 1.2,
• Drum CRUM Coupler Assembly (K) (PL8.1.3)
• Motor Drive PWB (REP 18.13,
• MCU PWB (REP 18.12,
Error Messages and Codes
Wiring and Plug/Jack Map References
page 8-10)
page 8-204)
page 8-202)
3-253