Canon CP660 Service Manual page 341

1 Multifeeder Pick-Up Assembly
Cause Step
Multifeeder 1
pick-up roller
Drive gear 2
Multifeeder 3
pick-up clutch
(CL3)
Multifeeder tray 4
paper sensor
(PS1301)
Multifeeder 5
paper sensor
(PS1301)
Holding plate 6
position sensor
(PS1302)
Holding plate 7
position sensor
(PS1302)
Connectors 8
(holding plate
solenoid SL4
drive; 24 V
supply line)
Holding plate 9
solenoid (SL4)
Multifeeder 10
PCB
DC controller
PCB
COPYRIGHT © 1999 CANON INC.
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Checks
Is the multifeeder pick-up roller
soiled, worn, or deformed?
Remove the multifeeder pick-up
assembly, and check the drive
gears. Is there any damaged part?
Disconnect the connector J1303 of
the multifeeder pick-up clutch from
the multifeeder tray PCB, and mea-
sure the resistance between the
connectors J1303-1 (MPTCLD*) and
J1303-2 (+24 UH) on the harness
side. Is it about 160 Ω?
Is the multifeeder tray paper sensor
lever or spring damaged/deformed?
Are they positioned correctly?
Replace the multifeeder tray paper
sensor. Is the problem corrected?
Is the holding plate position sensor
lever or spring damaged/deformed?
Are they positioned correctly?
Replace the holding position sensor.
Is the problem corrected?
Are the connector J213 on the DC
controller PCB, connectors J641
through J643 and J647 on the main
relay PCB, connectors J671 and
J673 on the sub relay PCB, connec-
tor J1302 of the holding plate sole-
noid, and connector J102 of the
power supply connected securely?
Disconnect the connector J1302 of
the holding late solenoid from the
multifeeder tray PCB, and measure
the resistance between the connec-
tors J1302-1 (MPTSLD*) and J1302-
2 (+24 UH) on the harness side. Is it
about 160 Ω?
Replace the multifeeder tray PCB. Is
the problem corrected?
CANON 660/2100 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 10 TROUBLESHOOTING
Yes/No Action
YES Clean or replace the
roller.
YES Replace the damaged
part.
NO Replace the multifeed-
er pick-up clutch.
NO Replace the multifeed-
er tray sensor lever and
the lever. Position them
correctly.
YES Replace the sensor.
NO Replace the holding
plate position sensor
lever or spring. Position
them correctly.
YES Replace the sensor.
NO Connect them securely.
NO Replace the holding
plate solenoid.
YES Replace the PCB.
NO Replace the DC con-
troller PCB.
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