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  1. #1
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    Ricoh MPC2050 SC542

    I have this service code and have done following:
    1. Changed Heating roller thermostat
    2. Changed pressure roller thermostat
    3. Changed front thermistor.

    Still hace SC 542, not bale to reset. It is asking contact administrator. Please help help?

  2. #2
    Retired 5,000+ Posts slimslob's Avatar
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    Re: Ricoh MPC2050 SC542

    You might have an open heating element.

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    Re: Ricoh MPC2050 SC542

    Quote Originally Posted by slimslob View Post
    You might have an open heating element.
    I checked heating elements by putting power directly to them, both are turning on,

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    Re: Ricoh MPC2050 SC542

    Quote Originally Posted by slimslob View Post
    You might have an open heating element.
    what should be reading of these Thermisters at room temp.?

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    Retired 5,000+ Posts slimslob's Avatar
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    Re: Ricoh MPC2050 SC542

    Normal room temperature reading should be 25 to 27 degrees when checked in System SP display temperatures.

  6. #6
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    Re: Ricoh MPC2050 SC542

    Did you reset SC code in SP mode?

    Sent from my G8441 using Tapatalk

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    Re: Ricoh MPC2050 SC542

    Quote Originally Posted by solorajder View Post
    Did you reset SC code in SP mode?

    Sent from my G8441 using Tapatalk
    yes it came back with SC547
    the fuser unit is not getting power form the power supply Board.

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    Re: Ricoh MPC2050 SC542

    Quote Originally Posted by Spar View Post
    I checked heating elements by putting power directly to them, both are turning on,
    That sounds a bit dangerous.

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    Re: Ricoh MPC2050 SC542

    Quote Originally Posted by Spar View Post
    I checked heating elements by putting power directly to them, both are turning on,
    i think most of must would just meter out the heating lamps.
    You might need a point to point to figure if you have a power supply issue versus a controller issue.
    does the fuser attempt to warm up at all,is it ice cold or warm after coding out/.

  10. #10
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    Re: Ricoh MPC2050 SC542

    Quote Originally Posted by fshead View Post
    i think most of must would just meter out the heating lamps.
    You might need a point to point to figure if you have a power supply issue versus a controller issue.
    does the fuser attempt to warm up at all,is it ice cold or warm after coding out/.
    Fuser does not attempt to warm up atll.


    After I reset the sc code , it came up with SC547, whcih is pointing to power supply. There is no ourput power to the heaters of the fuser unit, looks like the relays are not commanded by the control unit to turn the heaters on. Do you know how the commands are generated to turn the power on to the heaters of the fuser unit?

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