3-76 Phaser 6128MFP Service Manual
Error Messages and Codes
5 Check Left Side Harness continuity.
Disconnect P/J23 from the MCU
Board and P/J234 from the No
Paper Sensor.
Is there continuity between P/J23
<=> P/J232.
Go to step 6. Repair the Left
Side Harness.
6 Check the No Paper Sensor signal.
Disconnect P/J23 from the MCU
Board.
Is there +3.3 V across ground <=>
J23-5 pin on the MCU Board?
Go to step 7. Replace the
MCU Board
(page 8-57).
7 Check the No Paper Sensor.
Measure the voltage across ground
<=> J23-11 on the MCU Board.
Does the voltage change when the
No Paper Sensor is activated?
Replace the
MCU Board
(page 8-57).
Replace the No
Paper Sensor
(page 8-33).
Troubleshooting Procedure Table (continued)
Step Actions and Questions Yes No
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