Phaser 6280 Color Laser Printer Service Manual 3-33
Error Messages and Codes
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.
Go to step 19. Replace the
Right Side
Harness.
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?
Go to step 20. Replace the
MCU Board
(
page 8-86).
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?
Replace the
MCU Board
(
page 8-86).
Replace the
Regi Sensor
(
page 8-43).
21 1.Check the wiring harness
connectors P/J428, P/J2720, P/
J272, and P/J27 between the Duplex
Board and the MCU Board.
2.Are the connectors securely
connected?
Go to step 22. Reconnect the
connectors.
22 Check the Duplex Unit Harness for
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.
Go to step 23. Replace the
Duplex Unit
(
page 8-99).
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.
Go to step 24. Replace the
Front Cover
Harness.
24 Check the Right Side Harness for
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.
Go to step 25. Replace the
Right Side
Harness.
Troubleshooting Procedure Table (continued)
Step Actions and Questions Yes No