Xerox Phaser 7760 Service Manual page 287

012-228 Booklet End Guide Home Sensor On Fail
Booklet End Guide Home Sensor is not turned On within 2000ms from motor On while Booklet
End Guide is returning to Home.
Initial Actions
• Check the Booklet End Guide Home Sensor for improper installation.
• Check the Booklet End Guide Home Sensor connectors for connection failure.
• Check the Booklet End Guide Motor connectors for connection failure.
• Check the Guide for deformation.
• Check the Guide for a foreign substance.
Procedure
Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer
Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics >
OK. Perform the Booklet End Guide Motor test. The Booklet End Guide Motor
energizes.
Y N
Check continuity between the Booklet End Guide Motor and the Booklet PWB and the
Booklet PWB and the Finisher PWB
Y N
Repair the open circuit or short circuit.
Replace the Booklet End Guide Motor
Booklet PWB (PL 21.12). If the problem persists, replace Finisher PWB
Block/unblock the Booklet End Guide Home Sensor. The display changes.
Y N
Check continuity between the Booklet End Guide Home Sensor and the Booklet PWB and
the Booklet PWB and the Finisher PWB
Y N
Repair the open circuit or short circuit.
Replace the Booklet End Guide Home Sensor
replace the Booklet PWB (PL 21.12). If the problem persists, replace Finisher PWB
21.12).
Check the following:
• The Booklet End Guide Motor for proper installation
• Booklet End Guide Belt for proper tension
• Booklet End Guide Belt for wear or damage
If the above checks are OK, replace the Finisher PWB
Revised
Phaser 7760 Color Laser Printer
(Figure 1). The continuity check is OK.
(PL 21.17). If the problem continues, replace the
(PL 21.12).
(Figure 1). The continuity check is OK.
(PL 21.17). If the problem continues,
(PL 21.12).
(PL 21.17)
(PL
January 2010
2-251
Status Indicator RAP's
012-228