Phaser 7500 Printer Service Manual 3-217
Error Messages and Codes
P/H Module Logic Fail
A fatal error was detected in the Tray Module.
Applicable Chain-Link Code
• 077-314: P/H Module Logic Fail
Initial Actions
• Power cycle the printer.
• If the problem persists, follow the procedure below.
1. Turn the power Off and On.
2. Check the connections between the Motor Drive PWB J509 and the TM Relay
PWB J801, as well as between the TM Relay PWB J800 and the Tray Module
PWB J541 for open circuits, short circuits, and poor contacts.
3. If no problems are found, replace the following parts in sequence:
• Tray Module PWB (REP 10.9, page 8-97)
• TM Relay PWB (REP 18.14, page 8-205)
• Motor Drive PWB (REP 18.13, page 8-204)
• MCU PWB (REP 18.12, page 8-202)
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ Tray Module PWB, PL10.9.1
■ MCU PWB, PL18.3.6
■ Motor Drive PWB, PL18.3.7
■ TM Relay PWB, PL18.3.11
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