Phaser 6500/WorkCentre 6505 Service Manual Xerox Internal Use Only 3-83
Error Messages and Codes
IOT NVRAM Error
Applicable Error Code
• 041-340
If the error occurred after replacing the MCU Board, transfer the internal data
of the old MCU Board to the new one.
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)
■ EEPROM Board (SFP PL8.2.16; MFP
PL8.3.4)
■ PHD XPRO Harness Assy (PL9.1.11)
■ “Map 4 - SFP MCU Board” on
page 10-9
■ “SFP Xerographics” on page 10-30
■ “Map 9 - MFP MCU Board and HVPS”
on page 10-18
■ “MFP Xerographics” on page 10-43
Troubleshooting Procedure
Step Actions and Questions Yes No
1 Does the error still occur after cycling
the power On and Off several times?
Go to step 2.
Complete.
a
2 Reseat the Imaging Unit and four
Toner Cartridges.
Does the error still occur when the
power is turned Off and On?
Go to step 3.
Complete.
a
3 Reseat the MCU Board.
Does the error still occur when the
power is turned Off and On?
Go to step 4.
Complete.
a
4 Check the connectors for connection.
Check the connections between the
PWBA EEPROM and MCU Board.
Are P/J 144, and P/J 42 connected
surely?
Go to step 6. Reconnect the
connector(s) P/
J42 and P/
J144 securely,
then go to step
5.
5 Does the error still occur when the
power is turned Off and On?
Go to step 6. Complete.
6 Check the PHD XPRO Harness Assy for
continuity.
Disconnect J42 from the MCU Board.
Disconnect J144 from the EEPROM
Board.
Is each cable of J42 <=> J144
continuous?
Go to step 7. Replace the
PHD XPRO
Harness Assy
(SFP,
page 8-128;
MFP,
page 8-148).
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