26 Chapter 1 Troubleshooting control panel messages
EN
The fusing motor (M1) drives the fusing assembly, the paper transport
(web) assembly, ITB lift mechanism, transfer roller, transfer roller lift
mechanism, the face down output delivery assembly. A 50.7 fuser error
is displayed when no motion is detected within the fuser by PS6.
Photosensor PS6 is the fusing unit pressure switch (see the service
manual for more information).
1 Power cycle the printer to try to clear the message.
2 Remove the left-side cover of the printer. Verify that the fusing motor
(M1) connector is seated firmly into J102 of the feed PCB.
3 Ensure connector at J110 of the feed PCB is firmly seated (this
connector contains the wiring for PS6 which provides fuser motion
feedback).
Note
Closely inspect the gears along the gear drive path. Make sure there
is no binding. Binding of the gears may prevent M1 from rotating.
4 If the error persists, observe the drive shaft of M1. If this shaft DOES
NOT rotate, the failure is related to the motor drive circuitry.
Referring to the printer’s wiring diagram, verify that connectors J102
and J106 of the feed PCB are firmly seated. If there still is an error,
replace the fusing motor and then feed PCB in sequence.
5 If the shaft rotates (both forward and reverse), and the 50.7 fuser
error is displayed, the cause of the error is related to the motion
feedback circuitry. Remove the fusing assembly and verify that the
sensor flag is in good condition and functional. Verify that the
connector at sensor PS6 is firmly seated; clean the sensor of dust
and debris. If the error persists, replace sensor PS6.
50.7 Fuser error
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