E243; E248 (Ir7200); E251 - Canon iR8500 Service Manual

4.1.40 E243

Main controller PCB
1) Turn off and then on the power switch. Is the problem corrected?
YES: End.
NO:
Control panel PCB
2) Try replacing the control panel PCB. Is the problem corrected?
YES: End.

4.1.41 E248 (iR7200)

EEPROMs
1) Are the EEPROMs connected securely to the sockets of the reader
NO:
Data (faulty)
2) Excute the following in service mode:
YES: Check the operation; if normal, end the work.
EEPROM, Reader controller PCB
3) Try replacing the EEPROM. Is the problem corrected?
YES: End.
NO:
4.1.42 E251 (Indicated if iR8500)
Foreign matter
1) Is there foreign matter that prevents the rotation of the fan around
YES: Remove the foreign matter.
Connector
2) Is the connector J1110 on the Reader controller PCB connected se-
NO:
Inverter cooling fan (FM9), Reader controller PCB
3) Try replacing the inverter cooling fan (FM9). Is the problem cor-
NO:
YES: Replace the Reader controller PCB.
COPYRIGHT© 2001 CANON INC.
Replace the Main controller PCB.
controller PCB?
Connect them securely.
COPIER>FUNCTION>CLEAR>R-CON. Is the problem cor-
rected?
Thereafter, be sure to enter the service mode data.
Thereafter, be sure to enter the service mode data newly.
Check the wiring; if normal, replace the reader controller PCB.
the inverter cooling fan?
curely?
Connect the connector securely.
rected?
End.
2000 2000 2000 2000
CHAPTER 6 TROUBLESHOOTING
CANON iR8500/7200 REV.1 AUG. 2001
6-113