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6. E010
7. E030
COPYRIGHT
©
1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
10-66
CHAPTER 10 TROUBLESHOOTING
Cause
Main motor unit
(M1; refers to
main motor and
main motor
driver PCB as
single entity)
DC controller
PCB
Drive belt
DC power
supply
Main motor unit
DC controller
PCB
Checks
Does the main motor rotate until
E010 is turned on?
Set the meter to the 12VDC
range. Does the voltage between
J303-3 (+; MMD) and J303-2 (-; 0
V) on the DC controller PCB
change from about 0 V to about
2.6 V or from about 5 V to about
2.6 V when the Copy Start key is
pressed or when WMUPR starts?
Is the drive belt routed properly?
Is the voltage between the
following connectors of the motor
driver PCB normal?
J501-1 (+; 34 V) and J501-2 (-; 0
V)
Replace the main motor unit. Is
the problem corrected?
Step
1
2
3
4
5
Results
NO
NO
YES
NO
NO
YES
NO
Action
Go to step 3.
Replace the main motor
unit (M1).
Check the contact of the
connector (J502) on the
motor driver PCB and
the wiring from J502 to
the connector (J303) on
the DC controller PCB; if
normal, replace the main
motor unit or the DC
controller PCB.
Re-route the belt.
Check the wiring
between the connector
(J206) on the composite
power supply PCB and
the connector J501) on
the motor driver PCB; if
normal, see “DC power
supply is absent.”
End.
Replace the DC
controller PCB.
Checks
Is the total copy counter operating
normally?
Cause
DC controller
PCB
Step
1
Results
NO
YES
Action
See “The copy counter
fails to operate.”
Replace the DC
controller PCB.