Canon CP660 Service Manual page 321

15 E110
Cause Step
Connector 1
Laser scanner 2
motor
16 E196/E197/E198
Cause Step
DC controller 1
PCB
17 E240
Cause Step
Interface cable 1
Video interface
PCB, Reader
controller PCB
PS/PCL board 2
DC Controller
PCB
COPYRIGHT © 1999 CANON INC.
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Checks
Are the connectors J901 on the
laser scanner motor PC, relay con-
nectors J40, and connector J211 on
the DC controller PCB connected
securely?
Does the voltage between the con-
nectors J211-7 (SCND) on the DC
controller PCB and J211-6 (GND)
change from 0 to 17 V or more
when the printer unit is turned on?
Checks
Turn off and then on the printer unit.
Is the problem corrected?
Checks
Is the interface cable used to con-
nect the reader unit and the printer
unit connected securely?
Further, are the reader unit power
cord and the printer unit power cord
connected securely?
• If the printer unit is equipped with
both a PS/PSL board and a reader
unit,
Remove the PS/PCL board, and
turn on the printer unit/reader unit
as one (as a copier). Is E240 indi-
cated?
• If the printer unit is equipped with
only a PS/PCL board,
Try replacing the PS/PSL board
and the DC controller PCB one
after the other.
CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
Yes/No Action
NO Connect the connec-
tors.
YES Replace the laser
scanner motor.
NO Replace the DC con-
troller PCB.
Yes/No Action
YES End.
NO Replace the DC con-
troller PCB.
Yes/No Action
NO Make the connections
secure, and turn on the
reader unit.
YES Replace the video
interface PCB or the
reader controller PCB
of the reader unit.
NO Replace the PS/PCL
board.
YES Replace the DC con-
troller PCB.
10-39