Ricoh LDD280 - Page 241

SERVICE CALL CODE TABLE
SM 4-7 C262/C265
Trouble-
shooting
Code Title Conditions Possible Causes
SC512
Registration Press
Motor lock
The registration roller release
sensor does not change the status
for more than 3 seconds after the
Registration press motor on signal
is generated.
• Defective motor
• Defective registration
roller release sensor
SC520
Paper table lock
(paper table lower
limit sensor)
When the table moves upwards,
the sensor does not change status
for more than 7.5 seconds after the
paper table motor on signal is
generated.
• Defective sensor
• Defective motor
• Mechanism blocked by
foreign material
• Defective gear
• A spring has come off
SC521
Paper table lock
(paper table
height sensor)
When the table moves upwards,
the sensor does not change status
for more than 7.5 seconds after the
paper table motor on signal is
generated.
• Defective sensor
• Defective motor
• Mechanism blocked by
foreign material
• Defective gear
• A spring has come off
Electrical Components
SC600
NVRAM (ECU)
version differ
There is no version history in the
program of NVRAM
• Miss the Firmware
version up
SC601
Flash ROM (ECU)
error
Upload error to Flash ROM
• Defective ECU
SC602 Ri10 error Ri10 cannot be started, read, write.
• Defective ECU board
SC603 MSU error
The machine detects a failure in
the memory control ASIC.
The memory control ASIC cannot
access to RAM normally.
• Defective ECU board
• Replace the RAM on the
ECU board
SC604
Make-up RAM
error
The RAM for the make-up pattern
data cannot be reset.
• Defective ECU
SC605
Shut off solenoid
lock
Does not shut off for more than 6
seconds after the shut off solenoid
on signal is generated.
• Defective main switch
SC670
Engine response
error
After powering on the machine, a
response is not received from the
engine within the specified time.
• Loose connection
between ACU and ECU
board
• Defective ECU board
• Defective ACU board
SC672
Operation Panel
Error
Operation panel does not display
correctly.
• Defective software of
ACU or panel
• Defective ACU
Options
SC720
Paper table motor
lock – LCIT
The paper table upper limit sensor
or lower limit sensor does not
change the status for more than 15
seconds after the paper table motor
on signal is generated.
• Defective sensor
• Defective motor
• Mechanism blocked by
foreign material