October 2012
2-63
ColorQube 8570/8870 Service Manual
94,536, 94,538 ~ 94,541
Fault Messages and Codes
Xerox Internal Use Only - Revised, 3rd Revision
94,536, 94,538 ~ 94,541 Drum Thermal Faults
A Drum Heater 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 the Fan operation and vents.
•
Check that the Drum Heater and Thermistor are plugged in.
•
If the problem persists, perform the following procedure.
Troubleshooting Reference
Applicable Parts (Chapter 5 - Parts List)
•
Drum Assembly,
PL 2.1 Item 4
•
Drum Fan,
PL 4.1 Item 12
•
Drum Thermistor (Temperature Sensor),
PL 6.1 Item 5
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
Verify that the ambient temperature is within environmental specifications (room temperature)
(refer to
Environmental Specifications
in the Introduction and General Information Chapter). Is
the temperature within specifications?
Y
N
Advise customer of operational requirements.
Check resistance across the Drum Thermistor.
•
Check resistance on the wiring harness connector
P/J902
.
–
At Room Temperature: 280 kohms
–
At Operating Temperature: 50 kohms
Is it open or shorted?
Y
N
Check airflow at the vents. Is there adequate clearance, and are the vents clean?
Y
N
Clean the vents and/or advise customer of clearance requirements (refer to
Clear-
ance and Mounting Surface Specifications
in the Introduction Chapter).
Check the Drum Fan for operational. Does the Drum Fan operate?
Y
N
Replace the Drum Fan (
REP 4.12
).
Replace the Drum Assembly (
REP 2.4
).
Replace the Drum Temperature Sensor (
REP 6.5
) and or wiring cable.
Figure 1 Checking Drum Thermal Resistance
Table 1 Applicable Fault Codes
94,536
Drum Heater is too hot.
94,538
Drum is heating too slow.
94,539
Drum Thermistor is open.
94,540
Drum Thermistor is bad.
94,541
Drum Thermistor bad reading, cannot trust temperature.
A
A
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: ......
