Canon FY8-13HR-000 Service Manual page 91

CHAPTER 5 TROUBLESHOOTING
Symptom
The Control Panel
buttons don't work
No exhaust fan sound,
but the iR-M1
starts up properly.
Exhaust fan is working
but no air is blown out the installed
back panel of the iR-M1.
T05-202-01 General iR-M1 system error conditions (Continued)
5-10
Suggested action
Probable cause
Buttons are • Check to make sure that the buttons are installed
stuck or they correctly and are making contact with the pads on
are not making the UIB (see "User interface board" on page 4-13).
contact with the
UIB.
UIB cable • Check the UIB cable connection to the UIB and
Connection is motherboard (see "User interface board" on page 4-
faulty or the 13).
UIB is bad. • Make sure that the UIB is installed correctly and
that the UIB enclosure is in place.
• If the problem persists, replace the UIB.
Faulty chip on • Replace the motherboard (see "Motherboard" on
the motherboard. page 4-17).
Exhaust fans • Check exhaust fan cable connection to the
not properly motherboard connectors J25 and J26 (see "Fans" on
connected. page 4-22).
• If problem persists, replace the exhaust fan.
Exhaust fan is • Remove the exhaust fan and make sure to install it in
the proper orientation (see "Fans" on page 4-22).
backwards.
COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 NM-PDL REV.0 JULY 2001