Ricoh D127, Field Service Manual, Page: 167 / 474

No.
Definition
Symptom Possible Cause
460 B
Isolation voltage error
Detecting "0" (Abnormal) ten times in
series (200ms) while monitoring "HVP:
D: Output error detection signal" every
20m seconds.
(Reboot the machine to clear this SC)
490 B
Toner bottle motor overcurrent
Detecting "Low" for more than 200msec
while the motor on.
Motor locked up due to overcurrent to
the drive section.
• Defective the motor drive.
500 B
Main motor error
Detecting “High” condition twenty times
in series during watching each lock
signal after switching motor on.
• Overload
• Defective main motor drive
541 A
Fusing thermistor disconnection
Detecting the temperature remains lower
than 0 degrees Celsius for 5 seconds.
• Thermistor disconnection
• Defective connector part
542 Fusing reload failed
-001 A
Fusing temperature warm-up error
• The fusing temperature doesn’t rise
by more than 7 degrees for two
seconds; and this happens 5 times
consecutively.
The measure is start in 3.5 seconds after
activation of the heater.
This monitoring will stop in the case of
reaching the reload temperature.
• Defective thermistor
• Power source is out of warranty
SC Tables
165
SC530, 532
RTB 37