3-70 Phaser 6121MFP Service Manual
Error Messages and Codes
001B Toner Rack Failure
Initial Actions
Reseat the toner cartridges, and then power down and reboot the printer.
Procedure
5 Replace the Engine Control Board
(page 8-59).
Does the problem persist?
Go to step 5. Complete.
6 Replace the Power Supply (page 8-72). Complete.
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Rack Positioning Sensor, PL5.1.12
■ Engine Control Board, PL13.0.20
■ Board Locations (page 2-10)
■ Motors, Fans, and Solenoids
(page 2-12)
■ Map 1 - Engine Control Board
Plug/Jack Locator (page 10-5)
■ Engine Control Board Wiring
(page 10-14)
Troubleshooting Procedure Table
Step Action and Questions Yes No
1 Check the Rack Motor connector P/J5
on the Engine Control Board.
Is the connector seated properly?
Go to step 2. Reseat the
connector. If
the problem
persists, go to
step 2.
2 Check the Engine Control Board
connector P/J5.
Is the connector seated properly?
Go to step 3. Reseat the
connector. If
the problem
persists, go to
step 3.
3 Check the Rack Positioning Sensor at
PJ5-11.
Is the sensor on?
Go to step 4. Replace the
sensor. If the
problem
persists, go to
step 4.
4 Replace the Engine Control Board
(page 8-59).
Complete.
Troubleshooting Procedure Table (continued)
Step Action and Questions Yes No
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