Canon CLC 1120 Service Manual page 874

Code
(E202)
No code indication;
keys are disabled.
E208
E220
E305
COPYRIGHT © 1999 CANON INC.
Cause
· The original scanner HP sensor
(PS1) is faulty.
· The original scanner motor
(PM15) is faulty.
· The original scanner motor driver
PCB is faulty.
· The CPU PCB is faulty.
· The DC power supply to the
original scanner motor driver PCB
is faulty.
· The wiring or connectors are
faulty.
· The original scanner motor driver
PC is faulty.
· The CPU PCB is faulty.
· The scanning is faulty.
· The lamp regulator PCB is faulty.
· The IP-MAIN PCB is faulty.
· The IP-PRJ PCB is faulty.
· The IP-ED PCB is faulty.
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
Timing of detection
The original scanner home position
signal (SCHP) is not generated
within 10 sec after the power switch
has been turned on or the Copy Start
key has been pressed.
The communication between the
original scanner driver PCB and the
CPU PCB is interrupted or 5 sec or
more.
During standby, the scanning lamp
turns on even though the R-CPU
keeps the scanning lamp ON signal
off.
During copying, the scanning lamp
turns off even though the R-CPU
keeps the scanning lamp ON signal
on.
At power-on, RAM access within
the IP-MAIN PCB does not take
place normally.
RAM access within the IP-PRJ PCB
or IP-ED PCB does not take place
normally. (For E305, the code is
indicated when copying is started in
projector mode or area select mode.)
0001 BD error (same as E100)
0002 concentration conversion
RAM error
0004 B shading correction RAM
error
0008 G shading correction RAM
error
0010 R shading correction RAM
error
0020 color correction RAM error
0040 original scanner motor error
0100 IP-ED PCB RAM error or
disconnection
0400 IP-PRJ PCB RAM error or
disconnection
0800 IP-IF PCB RAM error
1000 IP-IF PCB RAM error
13-347