Xerox Phaser 6128MFP Service Manual page 202

Error Messages and Codes
3-82
Troubleshooting Procedure Table (continued)
Step Actions and Questions
2 Run the Manual Feed Sensor test
(DI-0) (page 4-39).
Use the actuator to toggle the
sensor output.
Does the sensor operate?
3 Check connectors P/J23 and P/J233
between the MCU Board and the
Manual Feed No Paper Sensor.
Are the connectors secure?
4 Check Left Side Harness continuity.
Disconnect P/J23 from the MCU
Board and P/J233 from the Manual
Feed No Paper Sensor.
Is the harness damaged?
5 Check for +3.3 V at J23 on the MCU
Board.
Is +3.3 V available between J23-6
<=> ground?
6 Check No Paper Sensor signal.
Does the voltage between ground
<=>J23-8 on the MCU Board change
when the actuator blocks the
sensor?
Yes No
Replace the Go to step 3.
MCU Board
(page 8-57).
Go to step 4. Reconnect the
connectors.
Repair or Go to step 5.
replace the
harness
(PL10.4.18).
Go to step 6. Replace the
MCU Board
(page 8-57).
Replace the Replace the
MCU Board Manual Feed
(page 8-57). No Paper
Sensor
(page 8-28).
Phaser 6128MFP Service Manual