Xerox ColorQube 8570 Service Manual page 120

A B
• Test for bad Jetstack triac. Refer to
the Electrical Troubleshooting section in Chapter 6, General Troubleshooting.
• Test for shorts to Earth. Measure the resistance of
should be greater than 2 Megaohms.
Are F2 and the triacs OK and is
hms? (Ensure your DMM is rated to measure high-impedance resistance.)
Y N
Replace the following components:
• Electronics Module (REP
• Printhead Assembly (REP
Replace the Jetstack Fuse Assembly.
Perform procedures in RAP 99,002, 99,003
Replace the Ink Loader (REP 1.8). Does the error persist?
Y N
Troubleshooting complete.
Replace the Power Supply Board (REP 5.6) (Electronics Module).
Figure 1 Ink Loader Thermistor Test Point
Fault Messages and Codes
99,009 ~ 99,013, 99,015
Checking for Shorted and Leaky Triacs
P/JAC2 Pin 1 to Pin 7. It
P/JAC2 Pin 1 to Pin 7 greater than 2 Megao-
5.1)
2.3)
Jetstack Disconnect.
in 99,015 PEST - Drum Cooling Fan Disconnect
A Drum Cooling Fan error has occurred. The Drum Cooling Fan is not drawing the expected
power from the Power Supply. The following troubleshooting applies to this error.
Table 1 Applicable Fault Code
99,015 PEST - Drum Cooling Fan Disconnect
Initial Actions
• Reboot the printer and verify the error persists.
• Check the Drum Fan for function.
• Check the Drum Fan's wiring connection.
• If the problem persists, perform the following procedure.
Troubleshooting Reference
Applicable Parts (Chapter 5 - Parts List)
• Drum Cooling Fan, PL 4.1 Item 12
• I/O Board, PL 5.1 Item 10
Wiring and Plug/Jack References (Chapter 7 - Wiring Data)
• Figure 5, I/O Board P/J Locations
• Figure 8, I/O Board, Sensors (1 of 2)
Procedure
Upgrade firmware (Firmware Upgrade). Reboot the printer. Does the error persist?
Y N
Troubleshooting complete.
Check the Drum Fan wiring harness connector P/J903. Is
undamaged?
Y N
Reseat and/or replace the wiring harness.
Check resistance on the wiring harness connector P/J903. Is it open or shorted?
Y N
Replace the I/O Board (REP
Replace the Drum Cooling Fan (REP
Y N
Troubleshooting complete.
Replace the I/O Board (REP 5.10).
October 2012
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the connection
5.10).
4.12). Does the error persist?
Revised, 3rd Revision - Xerox Internal Use Only
ColorQube 8570/8870 Service Manual
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