Phaser 6121MFP Service Manual 3-75
Error Messages and Codes
0092 Transfer Belt Failure
The belt positioning sensor does not detect the transfer belt position detection 
hole a second time even after the lapse of a predetermined period of time after it 
has detected one while the transfer belt is rotated.
Initial Actions
Power down and reboot the printer.
Procedure
4 On the Engine Control Board, check for 
+24 VDC at P/J2-1, 5, and 7. Check for 
+5 VDC at P/J2-2.
Are the voltages present and within 
specification?
Go to step 5. Replace the 
Power Supply 
(page 8-72). If 
the problem 
persists, go to 
step 5.
5 Replace the Engine Control Board 
(page 8-59).
Complete.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Imaging Unit, PL4.0.13
■ Engine Control Board, PL13.0.20
■ Board Locations (page 2-10)
■ Sensors and Switches (page 2-11)
■ Motors, Fans, and Solenoids 
(page 2-12)
■ Map 1 - Engine Control Board 
Plug/Jack Locator (page 10-5)
■ Imaging Wiring (page 10-15)
Troubleshooting Procedure Table
Step Action and Questions Yes No
1 Check the Engine Control Board 
connector P/J9. 
Is the connector seated properly?
Go to step 2. Reseat the 
connector. If 
the problem 
persists, go to 
step 2.
2 Replace the Imaging Unit.
Does the problem persist?
Go to step 3. Complete.
3 Replace the Engine Control Board. Complete.
Troubleshooting Procedure Table (continued)
Step Action and Questions Yes No