COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON iR8500/7200 REV.1 AUG. 2001CHAPTER 6 TROUBLESHOOTING6-1274.1.69 E741Riser board1) Is the riser board mounted properly?NO: Mount the board properly.LIPS board2) Is the LIPS board mounted properly?NO: End.YES: Replace the main controlled PCB.4.1.70 E744Language module1) Was the language module installed when the software was up-graded?NO: Install the language module.Mismatch Between System and BOOT ROM2) Is the BOOT ROM from a different product?YES: Replace the boot ROM with an appropriate one.4.1.71 E800Malfunction1) Turn off and then on the power switch. Is the problem corrected?YES: End.J242) Is the connector J505 on the DC controller PCB and the connectorJ1719 on the relay PCB connected securely?NO: Connect the connectors securely.Relay PCB, DC controller PCB3) Is the voltage of the connector J505-B13 on the DC controller PCBabout 0 V?YES: Check the wiring and electrical continuity from the DC controllerPCB to the relay board PCB; if normal, replace the relay boardPCB.
