October 2012
2-90
ColorQube 8570/8870 Service Manual
99,071
Revised, 3rd Revision - Xerox Internal Use Only
Fault Messages and Codes
99,071 PEST - Power Dump Circuit Disconnected
A power dump circuit error has occurred. The following troubleshooting procedure applies to
this error.
Initial Actions
• Reboot the printer and verify the error persists.
• Check the component power connections and harness condition.
• If the problem persists, perform the following procedure.
Troubleshooting Reference
Applicable Parts (Chapter 5 - Parts List)
• Drum Assembly, PL 2.1 Item 4
• Electronics Module, PL 5.1 Item 1
• Power Control Board, PL 5.1 Item 8
• Cable, AC Heater, Drum, Preheater, PL 5.1 Item 12
Wiring and Plug/Jack References (Chapter 7 - Wiring Data)
• Figure 1, Right Side Wire Routing
• Figure 2, Right Side Electronics Module P/J Locations
• Figure 7, Drum Heater Load Dump, Motors, Head Maintenance Clutch, Strip Solenoid
Procedure
Check the wiring harness connectors P/J701 and P/J120. Are the connections secure and
undamaged?
YN
Reseat and/or replace the wiring harness.
Unplug the connector P/J120 and measure resistance on the Drum side. The measurement
should be at 13 ohms.
Is it open or shorted?
YN
Replace the Power Control Board (REP 5.6) (Electronics Module).
Replace the Drum Assembly (REP 2.4).
Table 1 Applicable Fault Code
99,071 PEST - Power Dump Circuit seems to be disconnected.