Ricoh LDD280 - Page 239

SERVICE CALL CODE TABLE
SM 4-5 C262/C265
Trouble-
shooting
Code Title Conditions Possible Causes
Master Exit
SC400
Pressure plate
motor lock
The both pressure plate HP sensor
and limit position sensor does not
ON for more than 8 seconds after
the pressure plate motor on signal
is generated.
The pressure plate does not reach
home while traveling from the
master eject ready position to the
compression position for more than
3 seconds after the pressure plate
motor on signal is generated.
The pressure plate does not reach
the home position from the
pressure position for more than 6
seconds after the pressure plate
motor on signal is generated.
The pressure plate does not reach
pressure prelate limit position for
4.5 seconds (A3) and 3.5 seconds
(A4).
• Defective sensor
• Defective motor
• Jammed master
SC401
Master Eject Box
lock solenoid error
The eject box lock sensor does not
Off after lifting lock twice.
• Defective box lock
solenoid
• Defective sensor
Paper Delivery and Exit
SC500
Feed pressure
motor lock
The sensor does not change status
for more than 6 seconds after the
feed pressure motor on signal is
generated.
• Defective feed pressure
detection board
• Defective feed pressure
motor
SC501
Separation
pressure motor
lock
The sensor does not change status
for more than 6 seconds after the
separation pressure motor on
signal is generated.
• Defective separation
pressure detection
board
• Defective separation
pressure motor
SC502
Feed encoder
error
The CPU detects an abnormal
signal from the feed encoder.
• Defective I/O board
• Defective sensor
• Defective encoder
SC503
Feed start sensor
error
The sensor is not activated for
more than 5 seconds after the main
motor on signal is generated.
• Defective sensor
SC505
Friction pad shift
motor lock
The sensor’s status remains the
same after the motor turns for 5
seconds.
• Defective sensor
• Defective motor