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Functional problem code SC542-00

I have an older copier and when I turned it on today it showed this code and I have not used it for a couple of days. It said to try turning the main power switch off and then back on which I did and code still shows.

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SC542 error = Fusing temp. warming-up error.
The fusing temp. does not reach the fusing standby temp. within 125 seconds after the main power switch is turned on.

Causes:
Thermistor defective or out of position
Fusing lamp open
Thermofuse open
BICU defective
Power supply brd defective
Poor connections

ALWAYS DISCONNECT THE POWER FROM THE WALL BEFORE WORKING ON MACHINE

*** replace the thermistor AND the thermofuse*** If one went bad then the other will probably go bad soon. ( 95% it is one of these). You can check lamp first by disconnecting one end and putting a meter on it to see if it is open -- if open then replace.

Posted on Jan 24, 2009

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SOURCE: functional problem code SC542-00

Enter SP mode > Clear (yellow) button > 1 0 7 > and press and hold the Stop (red) button for 3 seconds.
Then switch off and on the machine.
If error still there, probably you have a problem in the fusing unit.
Possible causes are:
Thermistor defective;
One of the fusing lamp is open circuit;
Thermofuse open;
Fusing unit connector defective; and
Power supply board.
Good luck and please rate me, thanks.

Posted on Jan 21, 2009

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Functional problem code SC542-00


Enter SP mode > Clear (yellow) button > 1 0 7 > and press and hold the Stop (red) button for 3 seconds.
Then switch off and on the machine.
If error still there, probably you have a problem in the fusing unit.
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Good luck and please rate me, thanks.

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