Xerox Phaser 7760 Service Manual page 352

012-920 Paper at Gate Sensor (Top Tray Job)
Control logic reports paper at the Gate Sensor.
Initial Actions
• Check for obstructions in the paper path.
• Check the Finisher Drive Motor Gears and Drive rolls for wear or damage.
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 Gate Sensor (PL 21.11). The display changes.
Status Indicator RAP's
012-920
Y N
Check the circuit of the Gate Sensor.
Procedure for troubleshooting procedure.
Check the following:
• Ensure that the connectors shown in the circuit diagrams are securely connected and that
the wires are not damaged
• Check the Finisher is docked properly
• Check the Finisher Transport Motor and its associated gears and belts for damage, con-
tamination or misalignment
If the above checks are OK, then replace the Gate Sensor
replace the Finisher PWB
Figure 1 012-920 Gate Sensor
January 2010
2-316
(Figure 1). Refer to Section 6,
(PL 21.11). If the problem persists,
(PL 21.12).
Phaser 7760 Color Laser Printer
Transmissive Sensor
Revised