Xerox Phaser 8400 Service Manual page 118

8400 8500/8550
37,036.45: 37,039.48:
37,037.46: 37,040.40:
Troubleshooting Procedure for Process Motor
Step Questions and Actions
1 1. Do the process drive gears, transfix shaft,
and drum maintenance shafts rotate freely?
2 1. Run the Process Motor test.
2. Did the test pass?
3 1. Check the wiring for damage.
8400 PEST Description
37,038.47: The power supply did not reset
properly as requested. The reset line
may not be connected.
37,039.48: Power supply +5 volt over limit.
37,040.40: Power supply +5 volt under limit.
37,041.41: Power supply +1.8 volt over limit.
37,042.42: Power supply +1.8 volt under limit.
37,043.43: Power supply +2.5 volt over limit.
37,044.44: Power supply +2.5 volt under limit.
37,045.45: Power supply +3.3 volt over limit.
37,046.46: Power supply +3.3 volt under limit.
37,047.47:
Power supply +12 volt over limit.
37,048.48:
Power supply +12 volt under limit
3-52
Process motor disconnect. The process motor is not
drawing the expected power from the supply.
Process motor short. The process motor is drawing too
much power from the supply.
Phaser 8400/8500/8550 Color Printer
PEST Description
Yes
Go to Step 2.
Replace the
electronics
module.
Replace the process drive
assembly.
8500/8550 PEST description
The power supply did not reset
properly as requested. The reset line
may not be connected.
Power supply +2.5 volt over limit.
Power supply +2.5 volt under limit.
Power supply +3.3 volt over limit.
Power supply +3.3 volt under limit.
Power supply +12 volt over limit
Power supply +12 volt under limit
No
Look for drag in
the rollers or
replace the
process drive.
Go to Step 3.