Xerox WorkCentre 5022 Service Manual page 157

092-660/668 ATC Amplitude Fail/ ATC Average Fail
BSD-ON: CH9.2
[ATC Amplitude Fail]
The output amplitude of the ATC Sensor in the ATC (Automatic Toner Control) measurement is
small.
[ATC Average Fail]
The average output value is not within the specified range in the ATC (Automatic Toner Con-
trol) measurement.
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. 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)
Version 1.0
WC 5022/5024
092-661 Temperature Sensor Fail
BSD-ON: CH9.3
The output value of the Temperature Sensor is not within the specification range.
Cause/Action
1. Turn the power OFF and ON.
2. Check the connection between the HVPS J500-1 and the ESS/MCU PWB J402-14 for
open circuit, short circuit, and poor contact.
3. If no problem is found, replace the following parts in sequence:
• HVPS (PL 18.3)
• ESS/MCU PWB (PL 18.3)
06/2014
092-660/668 ATC Amplitude Fail/ ATC Average Fail
2-135
Status Indicator RAPs