Question about Ricoh Aficio 2020D Copier

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SC551 error on Infotec IS2220D same as aficio 2020D

Hi, after moving our infotec to a new warehouse we started getting this error SC551. The guy from infotec service checked the machine and says the power suplly needs to be changed ?!? He look like he really didn't knew what he was talking about.
I'm sure the psu is ok, something must have shifted when moved. The machine only has 8000 prints on the counter but no warranty.

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  • Milan D Mar 25, 2008

    SC551 stands for Pressure Roller Thermistor Open

    Infotec IS2220D machine should be similar to:

    Ricoh Aficio 2020D
    Gestetner DSm 620D
    Nashuatec DSm 620D

    Rex Rotary 620D

    Lanier LD120D

  • Milan D Mar 25, 2008

    Yes but do i have to take all capacitors of the print to test them ?

  • Milan D Mar 25, 2008

    none of the is bulged and the most of them show decreasing voltage when mesured. They should be ok , right? One of them has no voltage and shows a fixed resistance arround 1300 ohm. This looks suspiciuos to me of is it because of other components on the print plate?

  • Milan D Mar 30, 2008

    do you mean like a schematic from the manufacturer. I don't think this is easy to find.

    Isn't there a easyier sollution like changing all the capacitors on the PSU or the full PSU by example. And is it sure it's one of the capacitors and not something else? The machine starts booting and after 10 seconds only (self check?) gives an error.(sc551) Some functions still work, like the counter by example. I gues if there is some problem with the psu the whole thing won't boot.

  • Milan D Mar 31, 2008

    They already sent a guy who really didn't knew what he was talking about. At the las he said "hes papers told him" he should change the PSU and that would cost arround 750? (?!?) (+/- 1.000) For that money i got a new one. But the problem is my copier only has 8.000 prints on the counter so i really don't want to throw it away.

    Can't i just exchange the PSU my self ? I'm sure it will be cheaper. But is it sure it's the PSU?



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This ought to be truly done with a schematic and voltage level chart or diagram, don't you suppose?

Posted on Mar 30, 2008

  • Patrick Michaels
    Patrick Michaels Mar 30, 2008

    voltage levels are critical on this unit. Any variation, would show as a soft value, hence your Thermistor situation.

    well, sounds like it's time for a service call, friend.


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It must be a small damage in capacitors in power supply

Posted on Mar 25, 2008

  • dewan nafees ahmed Mar 25, 2008

    you will have to have a visual check up for capacitors with bulged heads.
    sometimes if the problem is in bottom side then you will have to find it with a meter only



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