E733; E737; E740 - Canon iR8500 Service Manual

CHAPTER 6 TROUBLESHOOTING

4.1.66 E733

Wiring
1) Is the connector and the cable between the main controller PCB
NO:
DC controller PCB
2) Try replacing the DC controller PCB. Is the problem corrected?
YES: End.
NO:

4.1.67 E737

SDRAM
1) Is the SDRAM on the main controller PCB mounted properly?
NO:
SDRAM
2) Try replacing the SDRAM. Is the problem corrected?
YES: End.
NO:

4.1.68 E740

Ethernet card
1) Is the Ethernet card mounted properly?
NO:
Ethernet card
2) Try replacing the Ethernet card. Is the problem corrected?
YES: End.
NO:
6-126
and the DC controller PCB normal?
Correct the connectors and the cable.
Replace the main controller PCB.
Mount the SDRAM properly.
Replace the main controller PCB.
Mount the card properly.
Replace the main controller PCB.
COPYRIGHT© 2001 CANON INC. 2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001