Malfunctions - Canon NP6512 Service Manual

11 E261
Cause Step
Power 1
supply
frequency
Composite
power
supply PCB
12 E400
Cause Step
------------ 1
5V power 2
supply
ADF con- 3
troller PCB
13 E803
Cause Step
Malfunction 1
DC control- 2
ler PCB.
Composite
power
supply PCB
COPYRIGHT © 1999 CANON INC.
Checks
Turn off and then on the power switch.
Is the problem corrected?
Checks
Turn off and then on the power. Is the
probrem corrected?
Set the matter to the 20VDC range,
and connect the + probe to the foot of
the push swich on the ADF controller
PCB and the - probe to the copier
ground. Is the voltage about 5V?
0
ON
1 2
8
Figure 11-401
Replace the ADF controller PCB. Is
the problem corrected?
Checks
Turn off and then on the power switch.
Is the problem corrected?
Replace the DC controller PCB. Is the
problem corrected?
CANON NP6512/6612/7120/7130/7130F REV.0 AUG. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 11 TROUBLESHOOTING
YES/NO
YES End. However, if
'E261' occurs fre-
quently, advise the
user to use a frequency
stabilizer.
NO Replace the composite
power supply PCB.
YES/NO
YES End. (Check the
wiring between the
copier's DC controller
PCB and the ADF
controller PCB.)
NO Replace the ADF
controller PCB.
YES End.
NO Replace the copier's
DC controller PCB.
YES/NO
YES End.
YES End.
NO Replace the composite
power supply PCB.
Action
Action
Action
11-69