1-5-20
Code Contents
Remarks
Causes Check procedures/corrective measures
FS-9120DN/9520DN
2600
4000
4010
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.
Polygon motor synchronization
problem
•When the polygon motor starts, the
motor does not become stable even
after 20 s.
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.
Defective deck
conveying motor
board/desk drive
motor board.
Deck conveying
motor /desk drive
motor does not
rotate correctly
(the motor is over-
loaded).
Poor contact in
the deck convey-
ing motor/desk
drive motor con-
nector terminals.
Poor contact in
the polygon motor
connector termi-
nals.
Defective polygon
motor.
Defective power
supply unit.
Defective power
supply from en-
gine controller
PWB.
Defective engine
controller PWB.
Poor contact in
the polygon motor
connector termi-
nals.
Defective polygon
motor.
Defective power
supply unit.
Defective power
supply from en-
gine controller
PWB.
Defective engine
controller PWB.
Replace the deck conveying motor board/
desk drive motor board and check for cor-
rect operation.
Check the gears and remedy if necessary.
Reinsert the connector. Also check for con-
tinuity within the connector cable. If none,
remedy or replace the cable.
Reinsert the connector. Also check for con-
tinuity within the connector cable. If none,
remedy or replace the cable.
Replace the LSU (see page 1-6-11).
Check if 24 V DC is supplied to YC2-1 on
the engine controller PWB. If not, replace
the power supply unit.
Check if 24 V DC is output from YC8-10 on
the engine controller PWB. If not, replace
the engine controller PWB.
Replace the engine controller PWB (see
page 1-6-24).
Reinsert the connector. Also check for con-
tinuity within the connector cable. If none,
remedy or replace the cable.
Replace the LSU (see page 1-6-11).
Check if 24 V DC is supplied to YC2-1 on
the engine controller PWB. If not, replace
the power supply unit.
Check if 24 V DC is output from YC8-10 on
the engine controller PWB. If not, replace
the engine controller PWB.
Replace the engine controller PWB (see
page 1-6-24).
*: Optional