Xerox COLORQUBE 8570, Руководство по обслуживанию

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October 2012
2-72 ColorQube 8570/8870 Service Manual
99,006, 99,008
Revised, 3rd Revision - Xerox Internal Use Only Fault Messages and Codes
• Printhead Assembly ( REP 2.3 ).
Replace the Right Side Power Control Harness.
Perform procedures in RAP 99,002, 99,003 Jetstack Disconnect.
Replace the Drum Assembly ( REP 2.4 ). Does the error persist?
Y N
Troubleshooting complete.
Replace the Electronics Module ( REP 5.1 ).
99,008 PEST - Preheat Heater Disconnect
A Preheat Heater error has occurred. The Preheat Heater is not drawing the expected power
from the Power Supply. The following troubleshooting applies to this error.
Initial Actions
• Reboot the printer and verify the error persists.
• Check the Preheat Heater’s wiring connection.
• Check that the Preheater is plugged in.
• If the problem persists, perform the following procedure.
Troubleshooting Reference
Applicable Parts (Chapter 5 - Parts List)
• Preheater and Deskew Assembly, PL 2.1 Item 20
• Electronics Module, PL 5.1 Item 1
• Right Side Power Control Harness, PL 5.1 Item 13
Wiring and Plug/Jack References (Chapter 7 - Wiring Data)
• Figure 2 , Right Side Electronics Module P/J Locations
• Figure 3 , Front Side Wire Routing
• Figure 4 , Bottom Front Wire Routing
• Figure 6 , Hard Drive, Drum Heater, Paper Preheater
• Figure 9 , I/O Board, Sensors (2 of 2)
Procedure
Check the wiring harness connectors P/JAC3 , P/J115 , and P/J125 . Are the connections
secure and undamaged?
Y
N
Reseat and/or replace the wiring harnesses.
Disconnect the wiring harness connector P/JAC3 from the right side of the Electronics Module.
• At the harness, measure the red-black Preheater circuit; the circuit should measure ~55
ohms.
Are they open or shorted?
Y
N
Check the Heater. Is the Heater test open?
Y
N
Perform the following checks:
•
Test F3 in the Power Supply. Refer to Testing F2 and F3 in the Electrical Trou-
bleshooting section in Chapter 6, General Troubleshooting.
• Test for bad Jetstack triac. Refer to Checking for Shorted and Leaky Triacs in
the Electrical Troubleshooting section in Chapter 6, General Troubleshooting.
• Test for shorts to Earth. Measure the resistance of P/JAC2 Pin 1 to Pin 7. It
should be greater than 2 Megaohms.
Are F3 and the triacs OK and is P/JAC2 Pin 1 to Pin 7 greater than 2 Megao-
hms? (Ensure your DMM is rated to measure high-impedance resistance.)
Table 1 Applicable Fault Code
99,008 PEST - Preheat Heater Disconnect
A B C
A B