October 2012
2-21
ColorQube 8570/8870 Service Manual
88,500 ~ 88,504
Fault Messages and Codes
Xerox Internal Use Only - Revised, 3rd Revision
88,500 ~ 88,504 Preheater Thermal Faults
A Preheater Thermal error has occurred. The following troubleshooting procedure applies to
these errors.
Initial Actions
•
Reboot the printer and verify the error persists.
•
Check the ambient room temperature.
•
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
•
Right Side Power Control Harness,
PL 5.1 Item 13
Wiring and Plug/Jack References (Chapter 7 - Wiring Data)
•
Figure 6
, Hard Drive, Drum Heater, Paper Preheater
•
Figure 9
, I/O Board, Sensors (2 of 2)
Procedure
Verify that the ambient temperature is within environmental specifications (refer to
Environ-
mental Specifications
in the Introduction Chapter. Is the temperature within specifications?
Y
N
Advise customer of operational requirements.
Check the Preheater wiring harness connectors
P/J115
and
P/J125
. Are the connections
secure and undamaged?
Y
N
Reseat and/or replace the wiring harnesses.
Check the Right Side Power Control Harness for damage. Is the Right Side Power Control
Harness damaged?
Y
N
Check the Preheater Thermistor for continuity.
•
Disconnect the wiring harness connector
P/J401
from the I/O Board.
•
Measure the connector between pins 1 (red) and 2 (red). The measurement should
be about 110 ohms at room temperature.
Does the error persist?
Y
N
Troubleshooting complete.
Replace the Preheater and Deskew Assembly (
REP 2.20
).
Replace the Right Side Power Control Harness.
Figure 1 Measuring the Preheater Thermistor
Table 1 Applicable Fault Codes
88,500
Preheat heater is too hot.
88,501
Preheat is heating too slow.
88,502
Preheat thermistor is bad.
88,503
Preheater thermistor is open.
88,504
Preheater thermistor is shorted.
A
A
B
B
Summary of Contents for COLORQUBE 8570
Page 1: ...ColorQube 8570 8870 Printer ColorQube 8570 8870 Service Manual Xerox Internal Use Only...
Page 2: ......
Page 423: ......
