Ricoh LDD280 - Page 237

SERVICE CALL CODE TABLE
SM 4-3 C262/C265
Trouble-
shooting
Code Title Conditions Possible Causes
SC212 Master cut error
The master edge sensor remains
on after the first master cut
recovery operation. (Normally, the
master is cut if the master edge
sensor detects a mis-cut master
the first time.)
• Defective master edge
sensor
• Defective cutter unit
• Defective master
vacuum fans
• Jammed master
SC213
Master Making
Unit lock solenoid
error
The master making unit lock sensor
does not turn off after releasing the
master making unit lock solenoid.
• Defective master
making unit lock
solenoid
• Defective master
making unit lock sensor.
Drum
SC300
Main motor lock
(1st drum position
sensor does not
turn on)
At power on or when the drum
returns to home position, the 1st
drum position sensor is not
activated for more than 5 seconds
after the main motor on signal is
generated.
• Defective sensor
• Defective main motor
• Defective main motor
drive board
• Defective FU703+704
on the PSU
• Damage gear of main
motor
SC301
Main motor lock
(motor control
signal error)
The CPU on the motor control
board detects an abnormal signal
from the main motor encoder.
• Defective main motor
• Defective main motor
drive board
SC302
Main Motor lock
(Drum Home
position sensor
error)
When the drum is at the home
position, drum home position
sensor does not turn on 3
continuous times.
• Defective sensor
SC303
Image shift motor
lock (HP sensor
error)
At power on, the sensor signal
does not change for more than 12
seconds after the image shift motor
on signal is generated.
• Defective sensor
• Defective motor
SC304
Drum shift motor
lock (HP sensor
error)
At power on, the sensor signal
does not change for more than 3
seconds after the drum shift motor
on signal is generated.
• Defective sensor
• Defective motor
SC305
Drum shift motor
lock (no encoder
pulse)
At power on or when the image
side-to-side shift mode is selected,
the CPU detects no encoder pulse
from the sensor for more than 6
seconds after the drum shift motor
on signal is generated.
• Defective sensor
SC306
Drum thermistor
shut off
The signal from the thermistor cuts
off.
• Thermistor circuit cut off
SC307 Hot Ink
The temperature of ink is more
than 61 °C
• Thermistor short
SC308
Ink pump motor
lock
The sensor signal does not change
status after the ink pump motor on
signal is generated for 8 seconds.
• Defective sensor
• Defective motor
• Defective ink pump