The Total Copy Counter Fails To Operate; The Option Counter Fails To Operate - Canon NP6330 Service Manual

37

The total copy counter fails to operate.

Cause Step
Counter (CNT1) 1
DC controller 2
PCB
38

The option counter fails to operate.

Cause Step
Counter (CNT2) 1
Option counter 2
PCB
DC controller
PCB
COPYRIGHT © 1997 CANON INC.
Checks
Turn off the power switch, and
disconnect the connector J61 of
the counter.
Set the meter to the x1K
and measure the resistance
between J61-1 and J61-2 on the
counter side. Is it about 480 ?
Connect the connector J61, and
turn on the power switch.
Set the meter to the 30VDC
range, and measure the voltage
between J113-B9 (+) and J113-
B10 (-; CNTD*). Does the voltage
change from about 0 to about 24
and then to about 0 V when the
Copy Start key is pressed?
Checks
Turn off the power switch, and
disconnect the connector J64 of
the counter.
Set the meter to the x1K
and measure the resistance
between J64-1 and J64-2 on the
counter side. Is it about 480 ?
Replace the option counter PCB.
Is the problem corrected?
CANON NP6330 REV.0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 11 TROUBLESHOOTING
YES/NO
NO Check the wiring from
the DC controller PCB to
the counter; if normal,
range, replace the counter.
YES Replace the counter.
NO Replace the DC
controller PCB.
YES/NO
NO Check the wiring from
the DC controller PCB to
the counter; if normal,
range, replace the counter.
YES End.
NO Replace the DC
controller PCB.
Action
Action
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