Xerox 8500DN Service Manual - Page 107

Error Messages and Codes 8400 PEST Description 37,014.41: Drum Fan disconnect. The Drum Fan is not drawing the expected power. 37,015.42: 8500/8550/8560 PEST Description Electronics Module Fan Disconnect. The Electronics Module Fan is not drawing the expected power. Drum Fan disconnect. The Drum Fan is not drawing the expected power. Troubleshooting Procedure for Fans Step Questions and Actions Yes No 1 Run the appropriate diagnostic test: Go to Step 2. Go to Step 2. 37,013.40 = (8400) Electronics Fan 37,014.40 = (8500/8550/8560) Electronics Fan 37,014.41 = (8400) Drum Fan 37,015.41 = (8500/8550/8560) Drum Fan Did the test pass? 2 Check the wiring for the problem fan. Is the wiring damaged? Replace the Replace the harness. fan. 8400 PEST Description 8500/8550/8560 PEST description 37,016.43: PEST 50 V power supply test. For Phaser 8400 printers, the 50 V power supply is loaded with the Head Maintenance clutch, and then tested. 50 V power supply test. The power supply is loaded with the Head Maintenance, Deskew, and the Pick Clutches. Check the 50 V on the Power supply. Or, ensure that the cables are not plugged into any of the clutches. The expected power from the supply is not being drawn. This error may be caused by a power supply that is faulty or shorted by some other 50 V device. Check the 50 V on the Power supply. Or, ensure that the cables are not plugged into the clutch. Phaser 8400/8500/8550/8560 Color Printer Service Manual 3-39