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Phaser 8400/8500/8550/8560 Color Printer Service Manual 3-43
Error Messages and Codes
8400
8500/8550/
8560
8400 PEST Description
37,022.40: 37,025.43: Pressure pump motor disconnect. The Purge Pump is
not drawing the expected power.
Troubleshooting Procedure for Purge Pump
Step Questions and Actions
Yes No
1 Run the Pressure Pump Motor test.
Did the test pass?
Replace the
Electronics
Module.
Go to Step 2.
2 Check the Purge Pump wiring.
Is the wiring damaged?
Replace the Purge Pump.
8400
8500/8550/
8560
PEST Description
37,023.41: 37,026.44 Purge valve disconnect. The purge valve is not
drawing the expected power from the supply.
Troubleshooting Procedure for Purge Valve
Step Questions and Actions
Yes No
1 Run the Purge Vent Solenoid test.
Did the test pass?
Go to Step 2. Replace the
Purge Pump.
2 Check the Purge Pump wiring.
Is the wiring damaged?
Replace the defective wiring or
the Purge Pump.
8400
8500/8550/
8560
PEST Description
37,024.42: 37,027.45: Drum Heater Relay Board disconnect. Both Drum
heater relay coils are not drawing the expected power.
37,025.43: 37,028.46: Drum heater relay A disconnect. The Drum heater A
coil is not drawing the expected power from the supply.
37,026.44: 37,029.47: Drum heater relay B disconnect. The Drum heater B
coil is not drawing the expected power from the supply.