Canon NP6317 Specifications Page 209

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  • TROUBLESHOOTING
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CHAPTER 10 TROUBLESHOOTING
COPYRIGHT
©
1999 CANON INC. CANON NP6317 REV.0 APR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
10-45
14. Drum does not rotate
Action
Insert properly.
Remove the foreign mat-
ter.
Install the belt correctly.
Remove and check the
drum drive unit. Repair
or replace the unit.
Result
No
Yes
No
Yes
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?
Procedure
1
2
3
Cause/Problem
area
Drum unit
Torque limiter
Drive belt
Drum
drive unit
15. Paper is not picked up from cassette
Action
Refer to the sub-section
" Indicator does not
go OFF."
Install the belt correctly.
Refer to the sub-section
"Registration rollers do
not rotate."
Check or replace the
pick-up rollers.
Check the position of the
solenoid. If it is normal,
check the spring clutch
and control ring. Replace
any necessary parts.
Check the wiring from
the pick-up clutch sole-
noid (SL1) to the DC
controller PCB. If it is
normal, replace SL1.
Replace the DC control-
ler PCB.
Result
Yes
No
Yes
Yes
Yes
No
Yes
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?
Procedure
1
2
3
4
5
6
Cause/Problem
area
Drive belt
Pick-up rollers
Spring clutch
Pick-up clutch
solenoid
(SL1)
DC controller
PCB
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