3-204 Phaser 7500 Printer Service Manual
Error Messages and Codes
Tray 4 Paper Size Sensor Broken
Abnormal output AD value from Tray 4 Size Sensor was detected.
Applicable Chain-Link Code
• 073-212: Tray 4 Sensor Fail
Initial Actions
• Power cycle the printer.
• If the problem persists, follow the procedure below.
1. Perform the following steps:
• Check the bottom of the Tray for broken link and damage.
• Check the Actuator at the rear of the Tray for operation failure.
• Perform the Tray 4 Sensors test in Diagnostics.
• Check the connection between the Tray 4 Paper Size Sensor J102 and the
Tray Module PWB J549 for open circuit, short circuit, and poor contact.
2. 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 18.10, page 8-197)
• 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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