Error Messages and Codes 3-43
Tray 1/MPT Size Sensor (7-274), Code?
An open circuit has been detected in the Paper Size Senor
Troubleshooting References
Applicable Parts Wiring and Plug/Jack Map References
■ Tray 1/MPT Assembly
■ Engine Control Interface Board.
■ Engine Control Board
Troubleshooting Procedure
Step Actions and Questions Yes No
1
Is J610-2 between +0.15 and +3.1 VDC? Go to step 2. Go to step 3.
2
Is J532B-6 between +0.15 and +3.1 VDC? Replace in the
following order:
■ engine control
interface board.
■ engine control
board
Troubleshoot and
repair the wiring
harness between
P/J 535 and
P610.
3
Is +3.3 VDC present at J610-1? Replace the Tray
1/MPT assembly.
Go to step 4.
4
Is +3.3 VDC present at J532B-7? Troubleshoot and
repair the wiring
harness between
P/J 535 and P610.
Replace in the
following order:
■ engine control
interface board.
■ engine control
board
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