I. Detecting Errors on the Composite Power Supply PCB
The composite power supply PCB is equipped with a self diagnostic function which checks for an error
in the output of the PCB and its communication with the DC controller PCB.
The results of detection are indicated by changing the intervals at which LED100 on the DC controller
PCB flash. (See p. 3-75.)
At the same time, the results are sent to the image processor PCB to indicate an error code on the con-
trol panel.
When an E coded is indicated, the machine may be reset by turning ON and OFF the main power sup-
ply. As described later, errors which cause the scanning lamp are also checked by this detection mecha-
nism. (Resetting the machine after such errors requires replacement of the scanning lamp.)
COPYRIGHT © 1996 CANON INC. CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
3–74
3. OPERATIONS AND TIMING
Figure 3-513 DC Controller PCB
LED100
