Adc Sensor Fail - Xerox Phaser 7500 Service Manual

Error Messages and Codes

ADC Sensor Fail

Applicable Chain-Link Code
Initial Actions
3-268
The ADC Sensor read value of the density reference patch is abnormal.
• 092-651: ADC Sensor Fail
• Power cycle the printer.
• If the problem persists, follow the procedure below.
Troubleshooting Reference
Applicable Parts
IBT Belt Unit, PL6.1.10
■
MOB ADC Assy, PL18.1.4
■
MCU PWB, PL18.3.6
■
1. Check the connection between the ADC Sensor (MOB ADC Assembly) J153
and the MCU PWB J415 for open circuit, short circuit, and poor contact.
2. Check whether there is poor connection or debris at the detection section of
the ADC Sensor.
3. If no problems are found, replace the following parts in sequence:
• MOB ADC Assembly (REP 18.3,
• IBT Belt Unit (REP 6.2,
• MCU PWB (REP 18.12,
Wiring and Plug/Jack Map References
page 8-189)
page 8-58)
page 8-202)
Phaser 7500 Printer Service Manual