Xerox 8500DN Service Manual - Page 111
Drum Heater Relay Board disconnect., Pressure Pump Motor
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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 1 Run the Pressure Pump Motor test. Did the test pass? 2 Check the Purge Pump wiring. Is the wiring damaged? Yes No Replace the Electronics Module. Go to Step 2. 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 1 Run the Purge Vent Solenoid test. Did the test pass? 2 Check the Purge Pump wiring. Is the wiring damaged? Yes No Go to Step 2. Replace the Purge Pump. 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. Phaser 8400/8500/8550/8560 Color Printer Service Manual 3-43
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