Canon NP6317 Service Manual page 209

14. Drum does not rotate
Cause/Problem
Procedure
area
Drum unit 1
Torque limiter 2
Drive belt 3
Drum
drive unit
15. Paper is not picked up from cassette
Cause/Problem
Procedure
area
1
Drive belt 2
3
Pick-up rollers 4
Spring clutch 5
Pick-up clutch 6
solenoid
(SL1)
DC controller
PCB
COPYRIGHT © 1999 CANON INC.
Check
Is the drum unit properly installed?
Is copy paper or foreign matter jammed
between the drum and the cleaning unit?
Is the drive belt installed correctly?
Check
Does the indicator remain ON?
Is the drive belt installed correctly?
Is the leading edge of the copy paper
reaching the registration rollers?
Open the right door and press the lever of
the right door sensor (Q3) by hand. Do the
paper pick-up rollers rotate when the
COPY START key is pressed? (visual
check)
Does the pick-up clutch solenoid (SL1)
operate when the COPY START key is
pressed?
Switch the copier OFF and disconnect
connector J307 on the DC controller PCB.
Set the meter to the 1k range, and mea-
sure the resistance between J307-5 and
J307-6 (attached to solenoid wiring). Is re-
sistance approx. 165 ?
CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
Result
No Insert properly.
Yes Remove the foreign mat-
ter.
No Install the belt correctly.
Yes Remove and check the
drum drive unit. Repair
or replace the unit.
Result
Yes Refer to the sub-section
"
go OFF."
No Install the belt correctly.
Yes Refer to the sub-section
"Registration rollers do
not rotate."
Yes Check or replace the
pick-up rollers.
Yes Check the position of the
solenoid. If it is normal,
check the spring clutch
and control ring. Replace
any necessary parts.
No Check the wiring from
the pick-up clutch sole-
noid (SL1) to the DC
controller PCB. If it is
normal, replace SL1.
Yes Replace the DC control-
ler PCB.
Action
Action
Indicator does not
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