Canon CP660 Service Manual page 300

CHAPTER 10 TROUBLESHOOTING
Cause Step
Connector 5
(cartridge
motor drive)
Cartridge 6
motor (M3)
High-voltage 7
PCB 1
DC controller
PCB
4 The print is solid black/solid color.
Cause Step
Drum cartridge 1
2
High-voltage 3
PCB 1 (for pri-
mary charging
bias)
10-18
COPYRIGHT © 1999 CANON INC.
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Checks
Are the connectors J5001 and
J5003 on the high-voltage PCB 1
and the connector J226 on the DC
controller PCB connected securely?
Turn on the reader unit rear power
switch and the control panel power
soft switch. Is the voltage between
the connector J5003-1 (+24 UH) on
the high-voltage PCB 1 and the
nearby GND 24 V?
Replace the high-voltage PCB 1. Is
the problem corrected?
Checks
Is the contact of the drum cartridge
(for primary charging bias) or the
contact for primary charging of the
printer unit soiled?
Replace the drum cartridge (primary
charging roller). Is the problem cor-
rected?
Replace the high-voltage PCB 1. Is
the problem corrected?
Yes/No
NO
YES
YES
NO
Yes/No
YES
YES
YES
NO
CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
Connect them securely.
Replace the cartridge
motor.
End.
Replace the DC con-
troller PCB.
Action
Clean the contact. If it
is deformed or dam-
aged, replace the prob-
lem part. Also, check
for a displaced contact.
Replace the drum car-
tridge.
End.
Replace the DC con-
troller PCB.