3-144 Xerox Internal Use Only Phaser 6500/WorkCentre 6505 Service Manual
Error Messages and Codes
IOT PHD Detached
Applicable Error Code
• 091-972
Troubleshooting Reference Table
Applicable Parts Wiring and Plug/Jack Map References
■ Imaging Unit (PL4.1.21)
■ MCU Board (SFP PL8.2.13; MFP
PL8.3.6)
■ PHD XPRO Harn Assy (PL9.1.11)
■ “Map 4 - SFP MCU Board” on
page 10-9
■ “Map 9 - MFP MCU Board and HVPS”
on page 10-18
■ “SFP Xerographics” on page 10-30
■ “MFP Xerographics” on page 10-43
Troubleshooting Procedure
Step Actions and Questions Yes No
1 Reseat the Imaging Unit.
Does the error still occur when the
power is turned Off and On?
Go to step 2. Complete.
2 Check the connectors between the
MCU Board and Imaging Unit.
Are P/J42 and P/J422 connected
correctly?
Go to step 4. Reconnect the
connector(s) P/
J42 and/or P/
J422 securely,
then go to step
3.
3 Does the error still occur when the
power is turned Off and On?
Go to step 4. Complete.
4 Check the PHD XPRO Harness Assy for
continuity.
Disconnect P422 from the Imaging
Unit.
Disconnect J42 from the MCU Board.
Is each cable of P422 <=> J42
continuous?
Go to step 5. Replace the
PHD XPRO
Harness Assy
(SFP,
page 8-128;
MFP,
page 8-148).
5 Check after replacing the Imaging
Unit.
Replace the Imaging Unit. (page 8-7)
Caution: Be sure to pull eight sealing
tapes out from a new
Imaging Unit before
installation.
Does the error still occur when the
power is turned Off and On?
Replace the
MCU Board.
(SFP,
page 8-138;
MFP,
page 8-160)
Complete.
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