E741; E744; E800 - Canon iR8500 Service Manual

4.1.69 E741

Riser board
1) Is the riser board mounted properly?
NO:
LIPS board
2) Is the LIPS board mounted properly?
NO:
YES: Replace the main controlled PCB.

4.1.70 E744

Language module
1) Was the language module installed when the software was up-
NO:
Mismatch Between System and BOOT ROM
2) Is the BOOT ROM from a different product?
YES: Replace the boot ROM with an appropriate one.

4.1.71 E800

Malfunction
1) Turn off and then on the power switch. Is the problem corrected?
YES: End.
J24
2) Is the connector J505 on the DC controller PCB and the connector
NO:
Relay PCB, DC controller PCB
3) Is the voltage of the connector J505-B13 on the DC controller PCB
YES: Check the wiring and electrical continuity from the DC controller
COPYRIGHT© 2001 CANON INC.
Mount the board properly.
End.
graded?
Install the language module.
J1719 on the relay PCB connected securely?
Connect the connectors securely.
about 0 V?
PCB to the relay board PCB; if normal, replace the relay board
PCB.
2000 2000 2000 2000
CHAPTER 6 TROUBLESHOOTING
CANON iR8500/7200 REV.1 AUG. 2001
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