Kyocera TASKalfa 5551ci - Polygon Motor y Steady-State Error; BD Initialization Error K; BD Initialization Error C

2L6/2N6/2N5/2N4
1-4-110
4014 Polygon motor Y steady-
state error
After polygon motor Y is stabi-
lized, the ready signal is at the
H level for 15 s continuously.
Polygon motor Y
(LSU)
1. Confirm that the wiring connector is
firmly connected and, if necessary,
connect the connector all the way in.
Polygon motor Y and LSU relay PWB
(YC11)
LSU relay PWB (YC3) and Engine PWB
(YC12)
2. If the wiring is disconnected, shorted or
grounded, replace the wiring.
3. Replace the laser scanner unit (see
page 1-5-43).
Engine PWB 1. Check the engine software and upgrade
to the latest, if necessary.
2. Replace the engine PWB (see page 1-5-
80).
4101 BD initialization error K
After polygon motor K is
driven, the BD signal is not
detected for 1 s.
PD PWB K (LSU) 1. Confirm that the FFC wiring connector is
not distorted and connect the FFC wiring
all the way in.
Laser scanner unit and LSU relay PWB
(YC5)
LSU relay PWB (YC3) and Engine PWB
(YC12)
2. If the FFC wiring is disconnected,
replace the FFC wiring.
3. Replace the laser scanner unit (see
page 1-5-43).
Engine PWB 1. Check the engine software and upgrade
to the latest, if necessary.
2. Replace the engine PWB (see page 1-5-
80).
4102 BD initialization error C
After polygon motor C is
driven, the BD signal is not
detected for 1 s.
PD PWB C (LSU) 1. Confirm that the FFC wiring connector is
not distorted and connect the FFC wiring
all the way in.
Laser scanner unit and LSU relay PWB
(YC10)
LSU relay PWB (YC3) and Engine PWB
(YC12)
2. If the FFC wiring is disconnected,
replace the FFC wiring.
3. Replace the laser scanner unit (see
page 1-5-43).
Engine PWB 1. Check the engine software and upgrade
to the latest, if necessary.
2. Replace the engine PWB (see page 1-5-
80).
Code Contents Related parts
Check procedures/
corrective measures