Pick-Up Fails. (Paper Deck-A) - Canon NP6251 Service Manual

55. Pick-up fails. (paper deck-A1)
Cause Step
Upper right
door,
Lower right
door
Lifter
Deck pick-up
roller
Belt
Drive belt,
Gear, Coupling
DC controller
PCB
Deck pick-up/
vertical path
clutch (CL102,
pick-up; CL101,
vertical path)
COPYRIGHT © 1997 CANON INC.
Checks
1 Are the upper right door and the
lower right door closed firmly?
2 Slide out the compartment from
the deck. Does the lifter move
down? Further, is the sound of the
lifter moving up heard when the
compartment is set?
3 Does the pick-up roller rotate?
4 Is the belt used to transmit the
drive to the pick-up roll attached
correctly?
5 Is the drive from the deck main
motor transmitted to the pick-up
assembly through the drive belt,
gear, and coupling?
6 Set the meter to the 30VDC
range. Does the voltage between
J2001A-9/J2001A-10 and GND
change from 24 to 0 V when the
Copy Start key is pressed?
CANON NP6350/NP6251 REV. 0 JULY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 11 TROUBLESHOOTING
YES/NO Action
NO Close the doors.
NO See "The lifter fails to
move up."
YES If the roller is soiled,
clean it with alcohol. If
deformation by wear is
found, replace the roller.
NO Attach the belt correctly.
NO Check the drive belt,
gear, and coupling.
NO Replace the DC control
PCB.
YES Check the wiring to the
clutch; if normal, replace
the clutch.
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