3-68 Phaser 6121MFP Service Manual
Error Messages and Codes
Procedure
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack References
■ Loop Sensor (PS13), PL14.1.7
■ Transport Sensor (PS15), PL14.1.7
■ Duplex Unit, PL14.1
■ Engine Control Board, PL13.0.20
■ Board Locations (page 2-10)
■ Engine Control Board Wiring
(page 10-14)
Troubleshooting Procedure Table
Step Action and Questions Yes No
1 Verify the media is supported for use in
Tray 2. See “Media and Tray
Specifications” on page 1-15.
Is the media supported?
Go to step 2. Replace the
paper with a
supported
paper type.
2 Check that the Duplex Unit door is able
to close completely.
Is it closed?
Go to step 3. Fix the
problem
preventing the
door from
closing. If the
problem
persists, go to
step 3.
3 Clean the Duplex Unit Transport
Rollers, and if applicable, clean the
Duplex Unit Attachment Feed
Rollers(page 7-12).
Does the problem persist?
Go to step 2. Complete.
4 Check the Paper Loop Sensor (PS13)
actuator, and then replace the sensor.
Does the problem persist?
Go to step 3. Complete.
5 Check the Transport Sensor (PS15)
actuator, and then replace the sensor.
Does the problem persist?
Go to step 4. Complete.
6 Replace the Duplex Unit (page 8-110).
Does the problem persist?
Go to step 5. Complete.
7 Replace the Engine Control Board
(page 8-59).
Complete.
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