Ricoh M0A0 User Manual

6.Troubleshooting
253
SC No.
Level
Error Name/Error Condition/Major Cause/Solution
 Clear the SP: fusing SC.
 Check the connector connection.
 Replace the fusing (End) thermistor.
SC No.
Level
Error Name/Error Condition/Major Cause/Solution
SC553-
01
SC553-
02
A
Fusing (End) thermistor high-temperature detected (software)
(553-01)
In a condition of 235 degrees C or higher temperature, the temperature has increased more than
10 degrees C per 1 second, the heater has continuously reached 100% (maximum) duty, and
the center thermistor has detected the failure to reach the target temperature by 11 degrees C.
(553-02)
The temperature is detected to stay at 250 degrees C or higher for one second.
 Failed fusing (end) thermistor
 Clear the SP: fusing SC.
 Replace the fusing (end) thermistor.
SC No.
Level
Error Name/Error Condition/Major Cause/Solution
SC554-
00
A
Fusing (End) thermistor high-temperature detected (hardware)
The hardware high-temperature error sensor flag is detected (250 degrees C or higher).
 Damaged triac (shorted)
 Failed engine control board
 Failed fusing thermopile
 Failed fusing thermistor
 Abnormal fusing control software behavior
 The PWM signal is continuously supplied from the IH inverter (due to a software or
temperature sensor error).
 Clear the SP: fusing SC.
 Replace the PSU.
 Replace the Engine Board.
 Replace the fusing thermopile.
 Replace the Fusing Unit.
SC No.
Level
Error Name/Error Condition/Major Cause/Solution
SC557-00
C
Zero-crossing frequency exceeded
The number of zero-crossing interrupts exceeds a certain value in 500 ms.
The frequency of the commercial power supply line is unstable or noise occurs.
None

Ricoh M0A0 Specifications

General

Brand	Ricoh
Model	M0A0
Category	All in One Printer
Language	English