Xerox Phaser 6128MFP Service Manual page 196

Error Messages and Codes
3-76
Troubleshooting Procedure Table (continued)
Step Actions and Questions
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.
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?
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?
Yes No
Go to step 6. Repair the Left
Side Harness.
Go to step 7. Replace the
MCU Board
(page 8-57).
Replace the Replace the No
MCU Board Paper Sensor
(page 8-57). (page 8-33).
Phaser 6128MFP Service Manual