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
Summary of Contents for COLORQUBE 8570
Page 1: ...ColorQube 8570 8870 Printer ColorQube 8570 8870 Service Manual Xerox Internal Use Only...
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