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  1. #1
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    How do i reset SC 443 on mp c3500? please

    So was replacing the toner pumps from bad toner problem.
    I left a toner pump wire hanging and when i replace the transfer unit
    the connection caught the wire and cut both blue wires.
    and I got ERROR CODE SC443
    So i completed the pump replacements and secured my wires properly.
    I turned the copier on but SC443 came up again on the screen
    I clean the id sensor by sliding the door
    and the error code is still there.
    I removed the id sensors and cleaned them
    still no luck. I swapped out transfer unit same thing.
    all the round silver spinning motors on the back spin on copier start up.
    please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    How do I reset error code SC 443? and do you think that's the problem.

    Last edited by ISLEVIBES; 08-29-2017 at 11:53 PM.

  2. #2
    Service Manager 1,000+ Posts
    How do i reset SC 443 on mp c3500? please

    Lagonda's Avatar
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    Re: How do i reset SC 443 on mp c3500? please

    Quote Originally Posted by ISLEVIBES View Post
    So was replacing the toner pumps from bad toner problem.
    I left a toner pump wire hanging and when i replace the transfer unit
    the connection caught the wire and cut both blue wires.
    and I got ERROR CODE SC443
    So i completed the pump replacements and secured my wires properly.
    I turned the copier on but SC443 came up again on the screen
    I clean the id sensor by sliding the door
    and the error code is still there.
    I removed the id sensors and cleaned them
    still no luck.
    all the round silver spinning motors on the back spin on copier start up.
    please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    How do I reset error code SC 443? and do you think that's the problem.

    Sorry to say that this doesnt sound good SC 443 is a problem with the Image transfer unit. This is controlled by the IOB board which also controls the toner pumps. Check the voltages at CN201 to see if you have 24V there. If one of the voltages is missing you may have blown a fuse on the Power Supply Unit.
    If 24V is present on all the pins it looks like you have damaged the electronics on the IOB.

    CN 201
    Pin 1 24V
    Pin 2 24V
    Pin 3 24V
    Pin 4 24V
    Pin 5 24V
    Pin 6 Ground
    Pin 7 Ground
    Pin 8 Ground
    Pin 9 Ground
    Pin 10 5V

    At least 50% of IT is a solution looking for a problem.

  3. #3
    Service Manager 2,500+ Posts
    How do i reset SC 443 on mp c3500? please

    sandmanmac's Avatar
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    Re: How do i reset SC 443 on mp c3500? please

    Quote Originally Posted by ISLEVIBES View Post
    So was replacing the toner pumps from bad toner problem.
    I left a toner pump wire hanging and when i replace the transfer unit
    the connection caught the wire and cut both blue wires.
    and I got ERROR CODE SC443
    So i completed the pump replacements and secured my wires properly.
    I turned the copier on but SC443 came up again on the screen
    I clean the id sensor by sliding the door
    and the error code is still there.
    I removed the id sensors and cleaned them
    still no luck. I swapped out transfer unit same thing.
    all the round silver spinning motors on the back spin on copier start up.
    please help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    How do I reset error code SC 443? and do you think that's the problem.
    Sounds like you fried the IOB

    Edit: oops....Lagonda got there ahead of me


  4. #4
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    Re: How do i reset SC 443 on mp c3500? please

    Why go for the worst

    Sent from my LGLS676 using Tapatalk


  5. #5
    Service Manager 2,500+ Posts
    How do i reset SC 443 on mp c3500? please

    sandmanmac's Avatar
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    Re: How do i reset SC 443 on mp c3500? please

    Quote Originally Posted by ISLEVIBES View Post
    Why go for the worst

    Sent from my LGLS676 using Tapatalk
    Hmmm...I don't know, I suppose just because everything was fine until you shorted live wires on metal?


  6. #6
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    Re: How do i reset SC 443 on mp c3500? please

    Lol

    Sent from my LGLS676 using Tapatalk


  7. #7
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    Re: How do i reset SC 443 on mp c3500? please

    Quote Originally Posted by sandmanmac View Post
    Hmmm...I don't know, I suppose just because everything was fine until you shorted live wires on metal?
    How do i find the power supply and fuses mp c3500

    Sent from my LGLS676 using Tapatalk


  8. #8
    Service Manager 2,500+ Posts
    How do i reset SC 443 on mp c3500? please

    sandmanmac's Avatar
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    Re: How do i reset SC 443 on mp c3500? please

    Quote Originally Posted by ISLEVIBES View Post
    How do i find the power supply and fuses mp c3500

    Sent from my LGLS676 using Tapatalk
    Check Please.
    I'm done here


  9. #9
    Service Manager 1,000+ Posts
    How do i reset SC 443 on mp c3500? please

    Lagonda's Avatar
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    Re: How do i reset SC 443 on mp c3500? please

    Quote Originally Posted by ISLEVIBES View Post
    How do i find the power supply and fuses mp c3500
    Now I'm worried, if you don't know the basic lay out and the location of the fuses on the PSU you might bet a bit out your depth.

    At least 50% of IT is a solution looking for a problem.

  10. #10
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    Re: How do i reset SC 443 on mp c3500? please

    The pins behind the ibt that the transfer belt assembly connects to are bent. i popped out the plastic but cant figure out how to disconnect it in the back. its connected with a small white box or clip, I just don't know if the come apart.


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