Iot Over Heat Stop - Xerox Phaser 6500 Service Manual

Error Messages and Codes

IOT Over Heat Stop

Applicable Error Code
3-90
• 042-700
Troubleshooting Reference Table
Applicable Parts
Humidity Sensor (SFP PL8.2.7; MFP
■
PL8.1.10)
MCU Board (SFP PL8.2.13; MFP
■
PL8.3.6)
MFP: Left Side Harness Assy (PL
■
3.1.18)
SFP: Humidity Harness Assy
■
(PL9.1.6)
Troubleshooting Procedure
Step Actions and Questions
1 Check the connections between the
MCU Board and Humidity Sensor.
Are P/J20 and P/J201 connected
surely?
2 Does the error still occur when the
power is turned Off and On?
3 Disconnect P/J20 from the MCU
Board.
Disconnect P/J201 from the Humidity
Sensor.
Is each wire of P/J20 <=> P/J201
continuous?
4 Disconnect P/J20 on the MCU Board.
Is the voltage across ground <=> J20-4
on the MCU Board, about +5VDC?
Xerox Internal Use Only
http://www.manuals4you.com
Wiring and Plug/Jack Map References
"Map 3 - SFP IP Board, LVPS, and Drive"
■
on page 10-8
"Map 4 - SFP MCU Board" on
■
page 10-9
"SFP Xerographics" on page 10-30
■
"Map 8 - MFP LVPS, IP Board, and
■
Drive" on page 10-17
"Map 9 - MFP MCU Board and HVPS"
■
on page 10-18
"MFP Xerographics" on page 10-43
■
Yes
Go to step 3.
Go to step 3.
Go to step 4.
Replace the
Humidity
Sensor. (SFP,
page 8-130;
MFP,
page 8-153)
Phaser 6500/WorkCentre 6505 Service Manual
No
Reconnect the
connector(s) P/
J20 and/or P/
J201 surely,
then go to
step 2
Complete.
SFP: Replace
the Humidity
Harness Assy.
(PL 9.1.6)
MFP: Replace
the Left Side
Harness Assy.
(PL 3.1 18)
Replace the
MCU Board.
(SFP,
page 8-138;
MFP,
page 8-160)