3-138 Xerox Internal Use Only Phaser 6500/WorkCentre 6505 Service Manual
Error Messages and Codes
IOT Remain Duplex JAM
Applicable Error Code
• 077-907
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
■ Left Side Harness Assy (PL3.1.18)
■ Manual Feed No Paper Sensor
(Sensor Photo) (PL3.2.13)
■ MCU Board (SFP PL8.2.13; MFP
PL8.3.6)
■ “Map 2 - SFP Laser Unit and Feeder” on
page 10-7
■ “Map 4 - SFP MCU Board” on
page 10-9
■ “Map 7 - MFP Laser Unit and Feeder”
on page 10-16
■ “Map 9 - MFP MCU Board and HVPS”
on page 10-18
■ “SFP Media Feed” on page 10-27
■ “MFP Media Feed” on page 10-40
Troubleshooting Procedure
Step Actions and Questions Yes No
1 Perform the procedure “Manual Feed
Sensor” on page 4-20 to check
operation of the Manual Feed No
Paper Sensor.
Does the number on the screen
increase by one when you insert
paper?
Replace the
MCU Board.
(SFP,
page 8-138;
MFP,
page 8-160)
Go to step 2.
2 Check the connections between the
MCU Board and Manual Feed No
Paper Sensor.
Are P/J23 and P/J233 connected
correctly?
Go to step 3. Reconnect the
connector(s) P/
J23 and/or P/
J233 correctly.
3 Check the Left Side Harness Assy for
continuity.
Disconnect J23 from the MCU Board.
Disconnect J233 from the Manual
Feed No Paper Sensor.
Is each cable of J23 <=> J233
continuous?
Go to step 4. Replace the
Left Side
Harness Assy.
(PL 3.1.18)
4 Check the power to the Manual Feed
No Paper Sensor.
Disconnect J23 from the MCU Board.
Is the voltage across P23-6 <=> ground
on the MCU Board, about +3.3 VDC?
Replace the
Manual Feed
No Paper
Sensor.
Replace the
MCU Board.
(SFP,
page 8-138;
MFP,
page 8-160)
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