Question about Ricoh Office Equipment & Supplies
SC491 on a Ricoh SP 210SU is a code for bias leak.
The machine detects that a bias leak has occured from the drum charge, development charge or transfer charge.
PWM signals are sampled at 20 msec. intervals. This SC is issued if 10 PWM samplings within 200 msec. are abnormal.
• HVPS (high voltage power supply) harness loose, broken, defective
• HVPS board defective
• AIO terminal defective (the terminal for the toner cartridge)
• Cycle the machine off/on
• Check all the harness connections of the HVPS
• Check spring-loaded AIO terminal installation behind the HVPS.
• Replace HVPS.
Usually this error is related to the cartridge. Some manufacturers of compatible cartridges will replace the cartridge with a new one.
At least they should give a discount based on how many pages that was printed before it failed.
I have not seen this problem with a new genuine Ricoh cartridge.
It is important that the cartridge is not refilled more then 3 times. There is no counter on this, and companies that refill cartridges they collect (with unknown number of cartridges) may have problems quite often.
Posted on Aug 16, 2017
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Posted on Jan 02, 2017
Details (Symptom, Possible Cause, Troubleshooting Procedures)
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
Posted on Nov 16, 2007
call ricoh serviceman he/she can fix it.
Defective tank full sensor
• Tank full lever bent or broken
• Incorrect ink suction
1. Check the harness of the tank full sensor.
2. Replace the GJ engine.
3. Replace the maintenance unit.
• The position of the tank full lever
does not stay at the tank full position
after ink initialization or air releasing.
• The position of the tank full lever is
not detected at ink suction.
Posted on Jun 23, 2008
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