Phaser 7500 Printer Service Manual 3-267
Error Messages and Codes
ADC Shutter Open Fail/ ADC Shutter Close Fail
The ADC Sensor shutters is open (cannot be closed).
The ADC Sensor shutters is closed (cannot be opened).
Applicable Chain-Link Codes
• 092-649: ADC Shutter Open_Fail
• 092-650: ADC Shutter Close_Fail
Initial Actions
• Power cycle the printer.
• If the problem persists, follow the procedure below.
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 opening/ closing failure due to debris/ burrs, etc. at the
shutter section of the ADC Sensor.
3. If no problems are found, replace the following parts in sequence:
•MOB ADC Assembly (REP 18.3, page 8-189)
• MCU PWB (REP 18.12, page 8-202)
Troubleshooting Reference
Applicable Parts Wiring and Plug/Jack Map References
■ MOB ADC Assy, PL18.1.4
■ MCU PWB, PL18.3.6
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