2RV/2RW/2RX/2RY/3RA-3
7-80
C4000: Polygon motor startup error
Ready signal does not turn on even passing 10s after the polygon motor starts up.
C4010: Polygon motor steady-state error
Ready signal turns off for 1s consecutively after the polygon motor becomes stable.
2 Checking the driving parts The PF feed motor drive
parts do not operate prop-
erly.
If the coupling and gear in the
PF feed motor drive section
do not rotate smoothly, clean
the gear and apply grease to
it. If the coupling or gear is
broken, replace it.
4 Replacing the PF feed
motor
The PF feed motor is
faulty.
Replace the PF feed motor
5 Replacing the main/engine
PWB
The main/engine PWB is
faulty.
Replace the main/engine
PWB.
Step Check description Assumed cause Measures Reference
1 Checking the connection The connector is not prop-
erly connected or the wire
is faulty.
Clean and reattach the wire
connector terminal as follows.
If there is no continuity,
replace the wire.
• LSU (polygon motor) -
Main/engine PWB (YC3)
2 Checking the LSU The polygon motor does
not rotate properly.
Check the polygon motor
rotation sound. If not rotating
properly, reattach the LSU. If
not repaired, replace it.
3 Replacing the main/engine
PWB
The main/engine PWB is
faulty.
Replace the main/engine
PWB.
Step Check description Assumed cause Measures Reference
1 Checking the connection The connector is not prop-
erly connected or the wire
is faulty.
Clean and reattach the wire
connector terminal as follows.
If there is no continuity,
replace the wire.
• LSU (polygon motor) -
Main/engine PWB (YC3)
2 Checking the LSU The polygon motor does
not rotate properly.
Check the polygon motor
rotation sound. If not rotating
properly, reattach the LSU. If
not repaired, replace it.
3 Replacing the main/engine
PWB
The main/engine PWB is
faulty.
Replace the main/engine
PWB.
Step Check description Assumed cause Measures Reference
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