SOURCE: Ricoh AP3800 COLOUR Laser Printer
SC 556 Pressure roller fusing lamp temperature fluctuation
The pressure roller
temperature changes by
±20°C or more in one second.
This occurs three times in one
minute or two consecutive
times.
• Loose connection of
the pressure roller
thermistor 1. Check if the fusing unit is properly set
and connected to the main frame.
• Loose connection 2. Check if the pressure roller thermistor
connector is firmly connected.
between the fusing
unit and main frame
3. Replace the fusing unit.
SOURCE: Service Call SC 553 on Ricoh Aficio SP C811DN Printer.
No.
Type
Details (Symptom, Possible Cause, Troubleshooting Procedures)
553
A
Heating roller overheat (software error)
The detected heating roller temperature stays at 230°C or more for 1 second.
• Defective PSU
• Defective lOB
• Defective EGB
Related SC code: SC 543
1. Replace the PSU.
2. Replace the lOB.
3. Replace the EGB.
This is the simptoms of the service manual , you should check that your power output is stable and double check if there is not anything like paper stuck some were in the fuzing unit wich could also cause the fuzer to over heat
SOURCE: Ricoh Service Code error - Service Code SC-300
I am a Ricoh tech and my service manual doesent have a 300 code,
SOURCE: Ricoh SP C811DN error sc549
unplug printer, wait minute, plug in, should reset.
check Ricoh website to trouble shoot if does not reset.
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