Xerox Phaser 6280 Service Manual page 169

Phaser 6280 Color Laser Printer Service Manual
Troubleshooting Procedure Table (continued)
Step Actions and Questions
18 Check the Right Side Harness for
continuity.
1. Disconnect P/J29 from the MCU
Board and P/J292 from the Regi
Sensor Harness.
2. Check continuity between P/J29 <=>
P/J2922.
19 Check the Regi Sensor for continuity.
1. Disconnect P/J29 from the MCU
Board.
2. Is there +3.3 V across ground <=>
J29-8 pin on the MCU Board?
20 Check the Regi Sensor signal.
1. Measure the voltage across ground
<=> J29-10 pin on the MCU Board.
2. Does the voltage change when the
Actuator of the Regi Sensor is
activated?
1. Check the wiring harness
21
connectors P/J428, P/J2720, P/
J272, and P/J27 between the Duplex
Board and the MCU Board.
2. Are the connectors securely
connected?
Check the Duplex Unit Harness for
22
continuity.
1. Disconnect P/J428 from the Duplex
Board and P/J2720 from the Front
Cover Harness.
2. Check continuity between P/J428
<=> P/J2720.
23 Check the Front Cover Harness for
continuity.
1. Disconnect P/J2720 from the Front
Cover Harness and P/J272 from the
Right Side Harness.
2. Check continuity between P/J2720
<=> P/J272.
Check the Right Side Harness for
24
continuity.
1. Disconnect P/J272 from the Right
Side Harness and P/J27 from the
MCU Board.
2. Check continuity between P/J27 <=>
P/J272.
Error Messages and Codes
Yes No
Go to step 19. Replace the
Right Side
Harness.
Go to step 20. Replace the
MCU Board
(page 8-86).
Replace the Replace the
MCU Board Regi Sensor
(page 8-86). (page 8-43).
Go to step 22. Reconnect the
connectors.
Go to step 23. Replace the
Duplex Unit
(page 8-99).
Go to step 24. Replace the
Front Cover
Harness.
Go to step 25. Replace the
Right Side
Harness.
3-33