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  1. #1
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    Service codes SC 542 and SC552 on Rico MP C2050

    My printer shows the code SC 542, I changed all sensors in the fuser unit, same problem. I tested the heating Lamps both were working. Continue to show SC542, I reset te code many times keep on coming.
    I purchased a new fuser unit The service code changed to SC552.
    I Put a new power supply, Back to SC 542.

    I do not know where to go from this point?
    Please help.

  2. #2
    Service Manager 10,000+ Posts
    Service codes SC 542 and SC552 on Rico MP C2050

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    Re: Service codes SC 542 and SC552 on Rico MP C2050

    Quote Originally Posted by Spar View Post
    My printer shows the code SC 542, I changed all sensors in the fuser unit, same problem. I tested the heating Lamps both were working. Continue to show SC542, I reset te code many times keep on coming. I purchased a new fuser unit The service code changed to SC552.
    I Put a new power supply, Back to SC 542. I do not know where to go from this point? Please help.
    This error is a fusing thermistor error, it can mean:
    The fusing lamp is not connected. Reconnecting it may solve the problem.
    Thermistor is bent or gone bad. You may need to replace it.
    Or, the thermistor position is incorrect. To try and reset the code press:
    Clear Mode, 107, Clear/Stop and hold for 5 seconds.

    you said you checked lamps and (sensors?) did you bother to replace thermistors and thermostats? you did replace bushings n bearings too right?

    the 552 on new fuser... did you make sure: you got the right voltage and model? ( some can fit from another model but code out )

  3. #3
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    Re: Service codes SC 542 and SC552 on Rico MP C2050

    Did you check a thermopile? Screenshot_20190220-195445.jpg

    Sent from my G8441 using Tapatalk

  4. #4
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    Re: Service codes SC 542 and SC552 on Rico MP C2050

    First I changed evry thing two thermisters, and three sensors same rpoblem.
    Second I purchased new fuser unit, and installed, service code chnged to SC552.
    Third I chnged the power supply, service coode back to SC542.
    There is nothing left to be chnged in fuser unit, evry thing is new.

    Where to check now?

  5. #5
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    Re: Service codes SC 542 and SC552 on Rico MP C2050

    You didn"t answer on my question. Did you check a thermopile? Thermopile is located on machine and is not in the fuser unit. Look on picture I attached.

    Sent from my G8441 using Tapatalk

  6. #6
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    Service codes SC 542 and SC552 on Rico MP C2050

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    Re: Service codes SC 542 and SC552 on Rico MP C2050

    Quote Originally Posted by Spar View Post
    My printer shows the code SC 542, I changed all sensors in the fuser unit, same problem. I tested the heating Lamps both were working. Continue to show SC542, I reset te code many times keep on coming.
    I purchased a new fuser unit The service code changed to SC552.
    I Put a new power supply, Back to SC 542.

    I do not know where to go from this point?
    Please help.
    You sound like an end user to. If that is the case, you have 2 choices:
    1. Call a Ricoh branch or dealer.
    2. Replace the dinosaur.

    Considering the facts that Ricoh discontinued Assured Parts Availability one year ago and Field Support six years ago, I would recommend choice 2.

  7. #7
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    Re: Service codes SC 542 and SC552 on Rico MP C2050

    Quote Originally Posted by solorajder View Post
    You didn"t answer on my question. Did you check a thermopile? Thermopile is located on machine and is not in the fuser unit. Look on picture I attached.

    Sent from my G8441 using Tapatalk
    Based on what I did, looks like thermopile is the problem.
    How to access Thermopile?

  8. #8
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    Re: Service codes SC 542 and SC552 on Rico MP C2050

    Quote Originally Posted by solorajder View Post
    You didn"t answer on my question. Did you check a thermopile? Thermopile is located on machine and is not in the fuser unit. Look on picture I attached.

    Sent from my G8441 using Tapatalk
    Looks like it is the thermopile,
    Please let me know how can I test it?
    or just replace it?
    What is the part number to order?
    Thanks for help.

  9. #9
    Service Manager 10,000+ Posts
    Service codes SC 542 and SC552 on Rico MP C2050

    Phil B.'s Avatar
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    Re: Service codes SC 542 and SC552 on Rico MP C2050

    Quote Originally Posted by Spar View Post
    Looks like it is the thermopile,
    Please let me know how can I test it?
    or just replace it?
    What is the part number to order?
    Thanks for help.
    HIRE A DAMN TECH!
    you don't seem to be qualified!

  10. #10
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    Re: Service codes SC 542 and SC552 on Rico MP C2050

    Quote Originally Posted by Phil B. View Post
    HIRE A DAMN TECH!
    you don't seem to be qualified!
    We want to fix our self , the etch are charging just to come here $250 and 150 per hr after. More then the printer value. Please help us.

    Thanks,

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