Sc491 ошибка ricoh сброс

this article to know the ways to fix the Sc491 error and the causes behind this error code on Ricoh mp c2003, mp c2503, Mp c2011Sp, mp c2011, mpc4503

Solution for error code SC491-00 on the Ricoh mp c3503

Are you getting
the status as Sc491-00 on your Ricoh mp c2003, mp c2503, Mp c2011Sp, mp c2011, mp
c4503, mp c3503, mp c5503 Copier?  Here
in this article, we are sharing a few methods to fix the error code Sc491 on the
Ricoh MPC copier. Read this article to know the ways to fix the Sc491 error and the
causes behind this error code.

Meaning of the
error code Sc491

The error code
Sc491-00 stands for High voltage power. bias charge leak occurred for drum
unit, developer unit, or secondary transfer unit. The error signal is
identified for 0.2 seconds while charging the drum or developer. Usually, these
codes come when the drum unit or Developer unit is bad. This error may be due
to many reasons. You have to find the exact cause of this error. So check one
by one until it gets solved.

Solution for
the error code sc491

• Make sure the
  connectors on the front of all drum units are properly seated.
• Clean the contacts of all color drum units and developer units.
• Check the secondary
  transfer unit.
• Check the high
  voltage supply unit. Replace it if necessary.
• Check the
  HVPS-CB board. Replace it if necessary.

I hope this
helps you.  If the error persists after doing the above solutions, you
should contact the Toshiba Customer Service Team for the assistance of an
expert. They will assist you to get rid of this issue.

Andy_R

  

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1. 08-27-2018

   
   

   #1

   

   
   Technician
   

   

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2. 08-28-2018

   
   

   #2

   Re: Error Sc 491-00 on Mp c2011Sp
   

   Originally Posted by nokktekk
   

   How are you all? I have an mp c2011 which is coming up with sc 491-00 after running a few black n white copies. I have noted that the first page of a job prints out faint and the rest of the copies will be ok. I have noted from the FSM that this is a charge/development output error. I have dissembled and reassembled the black pcdu, removed and reseated the connectors for the pcdu and controller. The error is still coming up. The machines current mileage is roughly 36000 and my client is not happy at all. Does anyone have a solution for this. Please help

   well 1st not knowing this machine…

   » I have noted from the FSM that this is a charge/development output error. » GREAT so why didn’t you mention if you Touched the DEV Unit? ** if not WHY? error points to that**

   » I have noted that the first page of a job prints out faint and the rest of the copies will be ok. » Dev unit not getting charged or up to toning properly

   what is the count on the PCU’s / Dev units?

   » I have dissembled and reassembled the black pcdu » DID you clean the it out?
   Is it a charge corona or PCR type system? Did you clean that component?

   you left out a LOT of information of what was/wasn’t done.

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3. 08-28-2018

   
   

   #3

   

   
   Technician
   

   

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   Rep Power

   12

   Re: Error Sc 491-00 on Mp c2011Sp
   

   Thank you for your reply. I disassembled and checked the contacts of the Dev unit and Pcu. Everything looks ok.

   The mileage of the Pcu’s is as follows:- Pcu k 36073, Pcu C21926, Pcu M 21926, Pcu Y 21928. Dev Unit K 36073, Dev Unit C 21926, Dev Unit M 22024, Dev unit Y 21928. Note that this machine has never been serviced since installation and it is less than a year old. The client called to report this error.

   This machine uses a charge roller system. It also has a transfer belt and pre transfer roller.

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4. 08-28-2018

   
   

   #4

   Re: Error Sc 491-00 on Mp c2011Sp
   

   Originally Posted by nokktekk
   

   This machine uses a charge roller system. It also has a transfer belt and pre transfer roller.

   We are fully aware of what this model has. What we are yet to be convinced of is your ability to properly service it.

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5. 08-28-2018

   
   

   #5

   

   
   Technician
   

   

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   Re: Error Sc 491-00 on Mp c2011Sp
   

   Originally Posted by slimslob
   

   We are fully aware of what this model has. What we are yet to be convinced of is your ability to properly service it.

   I am capable of servicing thsee type of machines. How do I prove to you that I can service it.

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6. 08-28-2018

   
   

   #6

   Re: Error Sc 491-00 on Mp c2011Sp
   

   Now to the possible cause of your problem. Your profile says you are located in Zimbabwe. You indicate that you live in Harate which I cannot locate so I am thinking Harare. That would put you in a humid sub tropical climate or humid sub tropical/oceanic highland climate. The MP C2011 has a humidity range of 15 to 80% non condensing. At the high end, it needs to be running 24/7 in order for the fusing unit to keep it non condensing. Either that or you need to install anti condensation heaters. If you are getting condensation on the drums, there could be arcing that will cause pin holing of the drums which will cause the error. You need to do something about the humidity then replace the drums. If the humidity is not taken care of, you will to have premature drum failure.

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7. 08-28-2018

   
   

   #7

   

   
   Technician
   

   

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   Re: Error Sc 491-00 on Mp c2011Sp
   

   Originally Posted by slimslob
   

   Now to the possible cause of your problem. Your profile says you are located in Zimbabwe. You indicate that you live in Harate which I cannot locate so I am thinking Harare. That would put you in a humid sub tropical climate or humid sub tropical/oceanic highland climate. The MP C2011 has a humidity range of 15 to 80% non condensing. At the high end, it needs to be running 24/7 in order for the fusing unit to keep it non condensing. Either that or you need to install anti condensation heaters. If you are getting condensation on the drums, there could be arcing that will cause pin holing of the drums which will cause the error. You need to do something about the humidity then replace the drums. If the humidity is not taken care of, you will to have premature drum failure.

   Thank you for your advise. However, this client had 6 units within the same building. 2 units are in the same floor and vicinity. The other unit has done 98k. We have replaced the Pcu’s in the other machine as per pm schedule. We did not encounter such a problem. I am going to try and swop the Pcu from another machine. Hopefully the client will allow me to do this. My main worry is how do I solve this issue and convince the client to buy a new Pcu that is if it’s needed.

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8. 08-30-2018

   
   

   #8

   

   
   Technician
   

   

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   Re: Error Sc 491-00 on Mp c2011Sp
   

   Good day. I have swoped the Black PCU with the Yellow PCU. The error is still coming up. Could it be the Black dev unit? Anyone got any solutions???

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