Xerox WorkCentre 5022 Service Manual page 158

092-910 ATC Sensor Fail
BSD-ON: CH9.2
The frequency at which the ATC Average Fail or the ATC Amplitude Fail has been occurring is
at the threshold value or higher.
NOTE: To clear this Fail, clear the value of NVM [752-036] (ATC Fail) or NVM [752-038] (ATC
Fail Continuous Count) to '0'. If the machine is not repaired back to normal status, this Fail will
occur again during the operation.
NOTE: Setting the NVM [752-322] (Dispense Mode) to '0' (Timer Disp) or '2' (ICDC Disp) will
prevent ATC related fail from occurring and enable you to use the M/C. However, this means
that the Toner density will not be controlled.
Cause/Action
1. Install a Toner Cartridge that contains Toner. Copy a Test Chart (499T247), etc. and check
whether the density has recovered.
2. Check the Toner Dispense Motor (Output Check [092-001]) for operation failure. (PL 8.2)
3. Check the Toner transport path for Toner blockage.
4. Check the connection between the ATC Sensor P615 and the ESS/MCU PWB J409 for
open circuit, short circuit, and poor contact.
5. Check for toner blockage within the Developer Unit.
6. If no problem is found, replace the following parts in sequence:
• ATC Sensor (PL 8.6)
• Developer Unit (PL 8.4)
• Drum Cartridge (PL 8.1)
NOTE: After replacing the Drum Cartridge, clear the HFSI [950-807] (Drum Cycle
Counter) to '0'.
• ESS/MCU PWB (PL 18.3)
Status Indicator RAPs
092-910 ATC Sensor Fail
06/2014
2-136
Version 1.0
WC 5022/5024