Pick-Up Assembly - Canon 1000 Service Manual

7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS
1

Pick-Up Assembly

Cause Step
Cassette
Paper
Transparency
DC controller
PCB, Pick-up
clutch
Pick-up roller
Separation roller
Feeding roller
Pick-up vertical 10
path 1, 2, 3
sensor
11
Paper 12
Transparency 13
7-142
COPYRIGHT © 2001 CANON INC.
Checks
1 Was the paper picked up from the
cassette?
2 Is the cassette properly set in the
cassette?
3 Is the paper curled or wavy?
4 Try paper recommended by Canon.
Is the problem corrected?
5 Is the transparency of the specified
type, and is it oriented correctly?
6 Does the pick-up roller of the se-
lected cassette pick-up assembly
rotate during copying?
7 Is the pick-up roller deformed or worn?
8 Is the separation roller of the se-
lected cassette pick-up assembly
deformed or worn?
9 Is the feeding roller of the selected
cassette pick-up assembly deformed
or worn?
Is each of the sensors (P21, PS25,
PS27) of the pick-up assembly
normal?
Make copies in manual mode. Do the
multifeeder pick-up roller and the
paper thickness detecting roller
rotate?
Try Canon-recommended paper. Is
the problem corrected?
Is the transparency of the specified
type, and is it oriented correctly?
Yes/No
CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)
Action
NO Go to step 11.
NO Set the cassette properly,
and check the inside of
the cassette for foreign
matter.
YES Replace the paper, and
advise the user on the
correct method of storing
paper.
YES Advise the user to use
recommended paper.
NO Advise the user to use
transparencies of the
specified type and to
place them correctly.
NO See IV. "Pick-up fails."
YES Replace the pick-up roller.
YES Replace the separation
roller.
YES Replace the feeding
roller.
YES Check each guide for
foreign matter and defor-
mation.
NO Check the lever and
wiring; if normal, replace
the sensor.
NO See IV. "Multifeeder pick-
up fails."
YES Advise the user to use
recommended paper.
NO Advise the user to use
transparencies of the
specified type and to
place them correctly.