Kyocera TASKalfa 2551ci, Service Manual

Page: 337 / 756

2NP
1-4-30
3100 ISU home position error
ON/OFF of the HP sensor
doesn't change after a pre-
scribed pulse passes from
power supply ON.
The scanner mirror
frame is being
locked after setup.
Check whether the scanner mirror frame has
been unlocked and unlock if necessary (see
page 1-2-11).
Scanner motor 1. To check the scanner motor, execute
U073 (see page 1-3-54).
2. Move the scanner by the hand to check
whether it is unusually difficult to move.
3. Check that the optical wire rope is not
disengaged and engage the wire.
4. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Scanner motor and ISC PWB (YC5)
ISC PWB (YC3) and Main PWB (YC11)
5. If the wiring is disconnected, shorted or
grounded, replace the wiring.
6. Replace the scanner motor.
Home position
sensor 1. Check that the sensor is correctly
positioned.
2. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Home position sensor and ISC PWB
(YC8)
3. Replace the home position sensor.
Defective PWB. Replace the ISC PWB or the main PWB and
check for correct operation (see page 1-5-
37).
3210 CIS lamp error
When input value at the time
of CIS illumination does not
exceed the threshold value
between 5 s.
CIS
1. Execute U906 Separating Operation
Release (see page 1-3-195).
2. Execute CCD of U061 lamp check (see
page 1-3-43).
3. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
CIS and DPSHD PWB (YC2)
DPSHD PWB (YC3) and DP relay PWB
(YC2)
4. If the wiring is disconnected, shorted or
grounded, replace the wiring.
5. Replace the CIS and execute U091 and
U411 (see page 1-3-58,1-3-134).
Defective PWB. Replace the DP SHD PWB or the DP
connect PWB and check for correct opera-
tion.
Code Contents Causes
Check procedures/
corrective measures