E744; E800 - Canon iR105 Service Manual

4.1.63 E744

Language module
1) Was the language module installed during upgrading work?
NO:
Version (system and boot ROM)
2) Is the boot ROM designed for a different model?
YES: Replace the boot ROM with a correct one.
E744-1000
3) Machine models are not identical between Boot ROM and System.
YES: Replace Boot ROM with an appropriate one.
E744-2000
4) HDD stored the system for another machine model is connected.
YES: Replace HDD with the one in which appropriate system is stored.

4.1.64 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 then 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.
Install it.
(e.g., Boot ROM for the iR5000 Copy model is mounted on the Sys-
tem for the iR8500 Copy model)
(e.g., HDD for the iR8500 Copy model is changed the HDD for the
iR105 Copy model)
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 iR105 REV.0 JULY 2001
6-119