Xerox PHASER 8500 Service Manual page 111

Phaser 8400/8500/8550/8560 Color Printer Service Manual
8500/8550/
8400 8560
37,022.40: 37,025.43:
Troubleshooting Procedure for Purge Pump
Step Questions and Actions
Run the Pressure Pump Motor test.
1
Did the test pass?
Check the Purge Pump wiring.
2
Is the wiring damaged?
8500/8550/
8400 8560
37,023.41: 37,026.44
Troubleshooting Procedure for Purge Valve
Step Questions and Actions
Run the Purge Vent Solenoid test.
1
Did the test pass?
2 Check the Purge Pump wiring.
Is the wiring damaged?
8500/8550/
8400 8560
37,024.42: 37,027.45:
37,025.43: 37,028.46:
37,026.44: 37,029.47:
8400 PEST Description
Pressure pump motor disconnect. The Purge Pump is
not drawing the expected power.
Replace the
Electronics
Module.
Replace the Purge Pump.
PEST Description
Purge valve disconnect. The purge valve is not
drawing the expected power from the supply.
Go to Step 2.
Replace the defective wiring or
the Purge Pump.
PEST Description
Drum Heater Relay Board disconnect. Both Drum
heater relay coils are not drawing the expected power.
Drum heater relay A disconnect. The Drum heater A
coil is not drawing the expected power from the supply.
Drum heater relay B disconnect. The Drum heater B
coil is not drawing the expected power from the supply.
Error Messages and Codes
Yes No
Go to Step 2.
Yes No
Replace the
Purge Pump.
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