October 2012
2-28
ColorQube 8570/8870 Service Manual
91,547, 91,551, 91,555, 91,858, 91,870
Revised, 3rd Revision - Xerox Internal Use Only
Fault Messages and Codes
91,547, 91,551, 91,555, 91,858, 91,870 Printhead Reservoir
Thermal Faults
A Printhead Reservoir Thermal error has occurred. The following troubleshooting procedure
applies to these errors.
Initial Actions
•
Reboot the printer and verify the error persists.
•
Check the Printhead wiring harness connectors.
•
If the problem persists, perform the following procedure.
Troubleshooting Reference
Applicable Parts (Chapter 5 - Parts List)
•
Printhead Assembly,
PL 2.1 Item 3
•
Cable, Printhead Interface,
PL 5.1 Item 20
Wiring and Plug/Jack References (Chapter 7 - Wiring Data)
•
Figure 2
, Wave Amplifier, Printhead
•
Figure 6
, Printhead P/J Locations
Procedure
Restart the printer and allow to warm up. Check the Reservoir Thermistor wiring harness con-
nector
P/J190
(2-pin) on the Printhead Board. Is the connection secure and undamaged?
Y
N
Reseat and/or replace the wiring harness (Printhead Interface Cable).
Check the Printhead wiring harness connectors
P/J180
and
P/J240
and wiring. Are the con-
nections secure and undamaged?
Y
N
Turn off the printer.
Check the Thermistor for continuity on
P/J110
connector (see
Figure 1
).
•
Short pin 4 to pin 10.
•
Measure the Thermistor to ground.
–
Pin 3 (Reservoir Thermistor) to pin 4
•
Check the results as follows:
–
Good: 4.88 kohms at room temperature (The Printhead must be cool.)
–
Open Thermistor: 4.99 kohms
–
Shorted Thermistor: 0 Ohm
Does the error persist?
Y
N
Troubleshooting complete.
Replace the Printhead Assembly (
REP 2.3
).
Replace the Printhead Assembly (
REP 2.3
).
Figure 1 Wiring Harness Connectors
Table 1 Applicable Fault Codes
91,547
Reservoir Heater is too hot.
91,551
Reservoir Heater is too slow.
91,555
Reservoir Heater thermistor is bad.
91,858
Reservoir thermistor is open.
91,870
Reservoir 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: ......
