Xerox Phaser 6121MFP Service Manual page 168

Error Messages and Codes
3-62
Troubleshooting Procedure Table
Step Action and Questions
1 Check all Engine Control Board
connectors.
Are the connectors seated properly?
2 On the Engine Control Board, check the
Exit Sensor at P/J6-3 and perform a
print job. The voltage level should
change when the sensor is activated.
Is the sensor operational?
3 Check the Registration Roller Solenoid
at P/J10-4, and at the same time print
a page.
Is the solenoid operational?
4 Replace the Fuser.
NOTE If you already replaced the fuser, go to
step 5.
Does the problem still persist?
5 Replace the Image Processor Board
(page 8-66).
Does the problem still persist?
6 Replace the Engine Control Board
(page 8-59).
Yes No
Go to step 2. Reseat the
connectors. If
the problem
persists, go to
step 2.
Go to step 3 Replace the
Fuser
(page 8-9). If
the problem
persists, go to
step 3.
Go to step 4. Replace the
solenoid
(page 8-101).
If the problem
persists, go to
step 4.
Go to step 5. Complete.
Go to step 6. Complete.
Complete.
Phaser 6121MFP Service Manual