Xerox Phaser 7760 Service Manual page 342

012-901 Paper at H-Transport Entrance Sensor (A/P
Finisher)
Control logic reports paper at the H-Transport Entrance Sensor.
Initial Actions
• Check paper on the H-Transport Entrance Sensor.
• Check for obstructions in the paper path.
• Check the H-Transport Drive Motor Belt for wear or damage.
• Check the Guides on the H-Transport Cover for damage, wear or faulty installation.
Procedure
Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer
Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics >
OK. Open the H-Transport Cover and actuate the H-Transport Entrance Sensor
The display changes.
Status Indicator RAP's
012-901
Y N
Check the circuit of the H-Transport Entrance Sensor
Transmissive Sensor Procedure
Check the following:
• Ensure that the connectors shown in the circuit diagrams are securely connected and that
the wires are not damaged
• H-Transport and Finisher for a docking failure
• H-Transport Motor and its associated gears and belts for damage, contamination or mis-
alignment
If the above checks are OK, then replace the H-Transport Entrance Sensor
problem persists, replace the Finisher PWB
(PL 21.25).
Figure 1 012-901 H-Transport Entrance Sensor
January 2010
2-306
(Figure 1). Refer to Section 6,
for troubleshooting procedure.
(PL
(PL 21.12).
Phaser 7760 Color Laser Printer
21.25). If the
Revised