Xerox Phaser 7760 Service Manual page 337

012-303 H-Transport Cover Open
H-Transport Cover Interlock Sensor Open was detected.
Initial Actions
Check the following components:
• The H-Transport Cover Interlock Sensor for improper installation
• Check for obstruction in the between the H-Transport Cover and the H-Transport paper
transport area
• The H-Transport Cover Interlock Sensor connectors for connection failure
• The Actuator part for deformation
Procedure
Enter Service Diagnostics Menu: Printer Menu > Troubleshooting > Service Tools > Printer
Status Page > hold the Up and Down buttons simultaneously > Run Service Diagnostics >
OK. Block and unblock the H-Transport Interlock Sensor
Y N
+5 VDC is measured between the H-Transport Interlock Sensor J8445-1 and -3.
Y N
Disconnect P/J8396 on the Finisher PWB
between Finisher PWB P/J8396-1 and -3.
Y N
Replace the Finisher PWB
Check for an open circuit between Finisher PWB P/J8396-3 and -1 and H-Transport
Interlock Sensor J8445-1 and -3.
+5 VDC is measured between Finisher PWB P/J8396-2 and ground.
Y N
Replace the Finisher PWB (PL
+5 VDC is measure between H-Transport Interlock Switch J8454-2 and ground.
Y N
Check the wire between the H-Transport Interlock Switch J8454-2 and the Finisher
PWB P/J8396-2 for an open circuit or poor contact.
+5 VDC is measured between H-Transport Interlock Switch J8454-1 and ground.
Y N
Replace the H-Transport Interlock Switch
+5 VDC is measured at the H-Transport Interlock Sensor J8445-2 and ground.
Y N
Check for an open circuit between H-Transport Interlock Switch J8454-1 and H-
Transport Interlock Sensor J8445-2.
Replace the H-Transport Interlock Sensor
Check the following:
• Alignment between the H-Transport Cover and the H-Transport Interlock Sensor.
Revised
Phaser 7760 Color Laser Printer
(PL 21.25). The display changes.
(Figure 1). +5 VDC is
(PL 21.3).
21.3).
(PL 21.24).
(PL 21.25).
• Alignment between the H-Transport Cover and the H-Transport Interlock Switch.
• The H-Transport Cover for proper installation
• The Actuator for bending or alignment
• The Magnets for proper mounting
measured
January 2010
2-301
Status Indicator RAP's
012-303