Kyocera FS-9120DN Service Manual page 90

FS-9120DN/9520DN
Code
2600 Deck conveying motor of the paper
feeder PF-75*/desk drive motor of
the paper feeder PF-75* problem
• No pulse is input within 500 ms of the
start-up.
• No pulse is input within 100 ms of the
previous pulse input.
4000 Polygon motor synchronization
problem
• When the polygon motor starts, the
motor does not become stable even
after 20 s.
4010 Polygon motor steady-state problem
• When high-speed rotation from low-
speed rotation is requested, the motor
does not become stable even after 20
s.
1-5-20
Contents
Causes Check procedures/corrective measures
Defective deck Replace the deck conveying motor board/
conveying motor desk drive motor board and check for cor-
board/desk drive rect operation.
motor board.
Deck conveying Check the gears and remedy if necessary.
motor /desk drive
motor does not
rotate correctly
(the motor is over-
loaded).
Poor contact in Reinsert the connector. Also check for con-
the deck convey- tinuity within the connector cable. If none,
ing motor/desk remedy or replace the cable.
drive motor con-
nector terminals.
Poor contact in Reinsert the connector. Also check for con-
the polygon motor tinuity within the connector cable. If none,
connector termi- remedy or replace the cable.
nals.
Defective polygon Replace the LSU (see page 1-6-11).
motor.
Defective power Check if 24 V DC is supplied to YC2-1 on
supply unit. the engine controller PWB. If not, replace
the power supply unit.
Defective power Check if 24 V DC is output from YC8-10 on
supply from en- the engine controller PWB. If not, replace
gine controller the engine controller PWB.
PWB.
Defective engine Replace the engine controller PWB (see
controller PWB. page 1-6-24).
Poor contact in Reinsert the connector. Also check for con-
the polygon motor tinuity within the connector cable. If none,
connector termi- remedy or replace the cable.
nals.
Defective polygon Replace the LSU (see page 1-6-11).
motor.
Defective power Check if 24 V DC is supplied to YC2-1 on
supply unit. the engine controller PWB. If not, replace
the power supply unit.
Defective power Check if 24 V DC is output from YC8-10 on
supply from en- the engine controller PWB. If not, replace
gine controller the engine controller PWB.
PWB.
Defective engine Replace the engine controller PWB (see
controller PWB. page 1-6-24).
Remarks
*: Optional