Kyocera TASKalfa 420i Service Manual page 200

2KR/2KS
Code
C8320 Centerfold paper conveying belt
motor problem (optional center-fold-
ing unit of 3000-sheet document fin-
isher)
The home position is not detected when
initial operation even if 2.5 s passed.
Adjustment motor 2 problem
(optional document finisher)
The adjustment sensor 2 does not turn
on/off within specified time of the adjust-
ment motor 2 turning on.
C8330 Blade motor problem (optional cen-
ter-folding unit of 3000-sheet docu-
ment finisher)
The home position is not detected when
initial operation even if 1.5 s passed.
Adjustment motor 1 problem
(optional document finisher)
The adjustment sensor 1 does not turn
on/off within specified time of the adjust-
ment motor 1 turning on.
1-4-42
Contents
Causes Check procedures/corrective measures
Poor contact in the Check the connection of connector YC6,
connector termi- YC7 on the centerfold main PWB and the
nals. connector of centerfold paper conveying belt
motor 1/2, and the continuity across the con-
nector terminals. Repair or replace if neces-
sary.
Defective center- Replace centerfold paper conveying belt
fold paper convey- motor 1/2.
ing belt motor 1/2.
Defective PWB. Replace the centerfold main PWB or finisher
main PWB and check for correct operation.
The adjustment Reinsert the connector. Also check for conti-
sensor 2, adjust- nuity within the connector cable. If none,
ment motor 2 con- remedy or replace the cable.
nector makes poor
contact.
Defective adjust- Replace the adjustment sensor 2.
ment sensor 2.
Defective adjust- Replace the adjustment motor 2.
ment motor 2.
Defective finisher Replace the finisher main PWB and check
main PWB. for correct operation.
Poor contact in the Check the connection of connector YC8 on
connector termi- the centerfold main PWB and the connector
nals. of the blade motor, and the continuity across
the connector terminals. Repair or replace if
necessary.
Defective blade Replace the blade motor.
motor.
Defective PWB. Replace the centerfold main PWB or finisher
main PWB and check for correct operation.
The adjustment Reinsert the connector. Also check for conti-
sensor 1, adjust- nuity within the connector cable. If none,
ment motor 1 con- remedy or replace the cable.
nector makes poor
contact.
Defective adjust- Replace the adjustment sensor 1.
ment sensor 1.
Defective adjust- Replace the adjustment motor 1.
ment motor 1.
Defective finisher Replace the finisher main PWB and check
main PWB. for correct operation.
Remarks