Phaser 6500/WorkCentre 6505 Service Manual Xerox Internal Use Only 3-131
Error Messages and Codes
IOT Cover Front Open
Applicable Error Code
• 077-300
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
■ Front Cover (SFP PL1.2.1; MFP
PL1.2.1)
■ LVPS (SFP PL8.2.1; MFP PL8.2.12)
■ Harn Assy Interlock (SFP PL 8.2.5;
MFP PL8.1.1)
■ MCU Board (SFP PL8.2.13; MFP
PL8.3.6)
■ LVPS Main Harness Assy (PL9.1.3)
■ “Map 3 - SFP IP Board, LVPS, and Drive”
on page 10-8
■ “Map 8 - MFP LVPS, IP Board, and
Drive” on page 10-17
■ “SFP LVPS” on page 10-26
■ “MFP LVPS” on page 10-39
Troubleshooting Procedure
Step Actions and Questions Yes No
1 Check the Front Cover (Front Cover) for
shape.
Are there any damages on the Front
Cover?
Replace the
Front Cover.
(SFP,
page 8-22;
MFP,
page 8-33)
Go to step 2.
2 Check the Front Cover for latching.
Open and close the Front Cover.
Is the Front Cover latched correctly?
Go to step 3. Reseat or
replace the
Front Cover.
(SFP,
page 8-22;
MFP,
page 8-33)
3 Perform the procedure “Cover Open
Sensor (Interlock Switch)” on
page 4-26 to check the Interlock
Switch operation.
Does the number on the screen
increase by one, when the Front Cover
is closed and opened?
Replace the
MCU Board.
(SFP,
page 8-138;
MFP,
page 8-160)
Go to step 4.
4 Check the connectors for connection.
Check the connections between MCU
Board and LVPS.
Are P/J14 and P/J501 connected
correctly?
Go to step 6. Reconnect the
connector(s) P/
J14 and/or P/
J501 correctly,
then go to step
5.
5 Does the error still occur when the
power is turned Off and On?
Go to step 6. Complete.
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