Codes C2274 - C2351 - Kyocera TASKalfa 250ci Service Manual

2JZ/2JX/2JV/2H7-1
Code
C2274 Drum position sensor Y error
While the drum rotates two turns, no sig-
nal is input to the sensor.
C2300 Fuser motor error
After the motor drive ON signal is output
and 1 s elapses, the rated speed reach
signal is not input continuously for 2 s.
C2351 Cleaning motor K error
After the motor drive ON signal is output
and 1 s elapses, the rated speed reach
signal is not input continuously for 2 s.
1-4-38
Contents
Causes Check procedures/corrective measures
Poor contact in the Check the connection of connector YC3 on
connector termi- the sub front PWB and the connector of the
nals. drum unit Y, and the continuity across the
connector terminals. Repair or replace if
necessary.
Defective drum Replace the drum unit Y (see page 1-5-35).
position sensor Y.
Defective PWB. Replace the sub front PWB or engine PWB
and check for correct operation.
Poor contact in the Check the connection of connector YC25 on
connector termi- the engine PWB and the connector of the
nals. fuser motor, and the continuity across the
connector terminals. Repair or replace if
necessary.
Defective drive Check if the rollers and gears rotate
transmission sys- smoothly. If not, grease the bushings and
tem. gears. Check for broken gears and replace if
any.
Defective fuser Run maintenance item U030 and check if
motor. the fuser motor operates when YC25-B4
(remote signal) on the engine PWB goes
low. If not, replace the fuser motor.
Defective engine Run maintenance item U030 and check if
PWB. YC25-B4 (remote signal) on the engine
PWB goes low. If not, replace the engine
PWB.
Poor contact in the Check the connection of connector YC16 on
connector termi- the engine PWB and the connector of the
nals. cleaning motor K, and the continuity across
the connector terminals. Repair or replace if
necessary.
Defective drive Check if the rollers and gears rotate
transmission sys- smoothly. If not, grease the bushings and
tem. gears. Check for broken gears and replace if
any.
Defective cleaning Run maintenance item U030 and check if
motor K. the cleaning motor K operates when YC16-
B13 (remote signal) on the engine PWB
goes low. If not, replace the cleaning motor
K.
Defective engine Run maintenance item U030 and check if
PWB. YC16-B13 (remote signal) on the engine
PWB goes low. If not, replace the engine
PWB.
Remarks