Phaser 6128MFP Service Manual 3-79
Error Messages and Codes
3 Check the Front Cover latch.
Does the Front Cover latch correctly?
Go to step 4. Repair or
replace the
Front Cover
(page 8-15).
4 Remove the Imaging Unit and
examine the Registration Rollers.
Are the rollers seated correctly, free
of debris, and touching?
Go to step 5. Clean or repair
the rollers and
if necessary
the springs.
5 Check the Manual Feed Sensor
Actuator for damage or
misalignment. Remove the Lower
Chute (PL3.2.27) to examine the
actuator.
Is the actuator damaged or
misaligned?
Repair or
replace the
Manual Feed
Sensor
Actuator
(page 8-28).
Go to step 6.
6 Run the Manual Feed Sensor test
(DI-0) (page 4-39).
Use the actuator to toggle the
sensor output.
Does the sensor operate?
Replace the
MCU Board
(page 8-57).
Go to step 7.
7 Check connectors P/J23 and P/J233
between the MCU Board and the
Manual Feed No Paper Sensor.
Are the connectors secure?
Go to step 8. Reconnect the
connectors.
8 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?
Repair or
replace the
harness
(PL10.4.18).
Go to step 9.
9 Check for +3.3 V at J23 on the MCU
Board.
Is +3.3 V available between J23-6
<=> ground?
Go to step 10. Replace the
MCU Board
(page 8-57).
10 Check No Paper Sensor signal.
Does the voltage between ground
<=>J23-8 on the MCU Board change
when the actuator blocks the
sensor?
Replace the
MCU Board
(page 8-57).
Replace the
Manual Feed
No Paper
Sensor
(page 8-28).
Troubleshooting Procedure Table (continued)
Step Actions and Questions Yes No
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