Xerox Phaser 6121MFP Service Manual page 166

Error Messages and Codes
3-60
Procedure
Troubleshooting Reference Table
Applicable Parts
Registration Sensor (PS2), PL7.2.3
2nd Image Transfer Retraction
Sensor (PS3), PL4.0.9
Registration Roller Solenoid, PL9.1.21
Engine Control Board, PL13.0.20
Troubleshooting Procedure Table
Step Action and Questions
1 Check the Engine Control connectors
P/J10 and P/J12.
Are the connectors seated properly?
2 Check the signal at P/J12-6 on the
Engine Control Board and activate the
Registration Sensor. The voltage level
should change between +5 V and 0 V.
Is the sensor operational?
3 Check the signal at P/J12-3 on the
Engine Control Board and activate the
2nd Image Transfer Retraction Position
sensor.
Is the sensor operational?
4 Check the Registration Roller Solenoid
at P/J10-4, and at the same time print
a page.
Is the solenoid operational?
5 Replace the Engine Control Board
(page 8-59).
Wiring and Plug/Jack References
Board Locations (page 2-10)
Sensors and Switches (page 2-11)
Motors, Fans, and Solenoids
(page 2-12)
Imaging Wiring (page 10-15)
Map 1 - Engine Control Board
Plug/Jack Locator (page 10-5)
Yes No
Go to step 2. Reseat the
connectors. If
the problem
persists, go to
step 2.
Go to step 3. Replace the
Registration
Sensor
(page 8-106).
If the problem
persists, go to
step 3.
Go to step 4. Replace the
sensor. If the
problem
persists, go to
step 4.
Go to step 5. Replace the
solenoid
(page 8-101).
If the problem
persists, go to
step 5.
Complete.
Phaser 6121MFP Service Manual