Xerox Phaser 7760 Service Manual page 273

012-213 Stacker Lower Limit Fail
When Lower Limit Sensor On was detected after the Stacker Tray had started driving down.
Initial Actions
Check the following components:
• Upper Limit SW for improper installation
• Upper Limit SW connectors for connection failure
• Elevator Motor for operation failure
• Elevator Motor connectors for connection failure
Procedure
Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer
Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics >
OK. Actuate the Elevator Motor alternately. The Elevator Motor
Y N
Check continuity between the Elevator Motor and Finisher Main PWB
continuity check is OK.
Y N
Repair the open circuit or short circuit.
Replace the Elevator Motor (PL 21.4). If the problem continues, replace the Finisher PWB
(PL 21.12).
If the problem continues, replace the Finisher PWB
Revised
Phaser 7760 Color Laser Printer
(PL 21.4) runs.
(Figure 1). The
(PL 21.12).
January 2010
2-237
Status Indicator RAP's
012-213