Xerox Phaser 790, Service Manual

Page: 63 / 653

10/00
2-49 Phaser 790/DocuColor 2006
004-322
Status Indicator RAPs Initial Issue
004-322 Fuser Motor RAP
The Control Logic detected that the Fuser Motor is not functioning.
Initial Actions
Check the connectors on the Drive Motor PWB and the Fuser Motor. Ensure that they are cor-
rectly seated.
Procedure
Switch off the power then switch on the power. The 04-322 fault code is declared at the end
of self-test.
Y
N
Go to Flag 2 and check the harness between the Drive Motor PWB and the Fuser Motor
for damaged, or loose, wires or connector pins. If the wires are OK, replace the Fuser
Motor (PL 10.1). If the problem continues, replace the Drive Motor PWB (PL 10.1).
Access the Digital Output (DO) test from the Control Panel. Enter code [53]. Press the Item/
Enter button. The Fuser Motor energizes.
Y
N
Go to Flag 2 and check the harness between the Drive Motor PWB and the Fuser Motor
for damaged wires or connector pins. If the wires are OK, replace the Fuser Motor (PL
10.1). If the problem continues, replace the Drive Motor PWB (PL 10.1). If the problem
can not be resolved, replace the MCU PWB (PL 11.1)
Check the following:
•
Go to Flag 1 and check the wire for an open circuit.
• Go to Flag 2 and check the harness between the Drive Motor PWB and the Fuser Motor
for damaged wires or connector pins.
• The problem may be intermittent. Go to Figure 1 and check for loose or damaged connec-
tions or damaged wires. If the problem persists, replace the replace the MCU PWB (PL
11.2).