3-142 Xerox Internal Use Only Phaser 6500/WorkCentre 6505 Service Manual
Error Messages and Codes
IOT PHD Life Over
Applicable Error Code
• 091-935
8 Replace the Imaging Unit. (page 8-7)
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.
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)
■ “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 Using Printer Diagnostics, check the
life count values of the Imaging Unit:
Printer Diag > Parameter > Life IU (Y,
M, C, K) Time, Life IU Xero, Life IU
Deve K.
Do the values returned indicate near
end-of-life?
(Refer to “Maintenance Items” on
page 1-15 for Imaging Unit life
specifications.)
Replace the
Imaging Unit.
(page 8-7)
Go to step 2.
2 Reseat the Imaging Unit.
Does the error still occur when the
power is turned Off and On?
Go to step 3. Complete.
3 Replace the Imaging Unit. (page 8-7)
Caution: Be sure to pull all 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.
Troubleshooting Procedure (continued)
Step Actions and Questions Yes No
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