3-132 Xerox Internal Use Only Phaser 6500/WorkCentre 6505 Service Manual
Error Messages and Codes
IOT Side Cover Open
Applicable Error Code
• 077-301
6 Check the LVPS Main Harness Assy for
continuity.
Disconnect J14 from the MCU Board.
Disconnect J501 from the LVPS.
Is each cable of J14 <=> J501
continuous?
Go to step 7. Replace the
LVPS Main
Harness Assy.
7 Check the power to the Interlock
Switch
Disconnect the connector of J44 on
the LVPS.
Is the voltage across P44-1 <=> ground
on the LVPS, about +24 VDC?
Go to step 8. Replace the
LVPS (SFP,
page 8-124;
MFP,
page 8-145)
8 Check the Interlock Switch for
operation
Check the voltage across P44-3 <=>
ground on the LVPS.
Does the voltage change, when the
Interlock Switch is turned On/Off?
Replace the
LVPS (SFP,
page 8-124;
MFP,
page 8-145)
Replace the
Interlock
Harness Assy.
(SFP,
page 8-125;
MFP,
page 8-146)
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
■ Toner Door (SFP PL1.1.7;MFP
PL1.1.7)
■ Toner Door Switch (PL5.1.9)
■ Toner Dispenser Assembly
(PL5.1.1)
■ MCU Board (SFP PL8.2.13; MFP
PL8.3.6)
■ “Map 1 - SFP Print Engine” on
page 10-6
■ “Map 3 - SFP IP Board, LVPS, and Drive”
on page 10-8
■ “Map 6 - MFP Print Engine” on
page 10-15
■ “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 (continued)
Step Actions and Questions Yes No
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