Question about Panasonic FP-7735 Black and White Copier
What is an error code E3 40? My service company for this copier went belly up, no more support for me. I have this error code, sometimes I can hold the reset button & C button down when I turn it back on and get a few copies out before the E3 40 comes up again .What is this code can I fix it? Can I reset it? Where can I get the meaning for all the error codes it is not in my operating Guide???? Help
E3-40 is a toner density sensor error. It's probably toner getting built up on the sensor. It's located under the drum. It will look like 2 little LED looking things on a little circuit board about 3-4 inches long and half an inch wide. You can blow it out with canned air.
If that doesn't work, then the sensor needs to be replaced.
Posted on Jan 24, 2008
I just encountered the same error code. It is the problem with the toner density sensor which are located in a long skinny board which you will see hanging down on a plaster bracket after you remove the drum. There are 2 sensors. Try to clean the sensors and make sure the wire connected to it is seated firmly (that is all I need to do and my copier is working now). If still does not work, you may have to change the board, part # FFPEU0579 or FFPWB0579. To change the board, remove the white plastic clip holding the bracket and disconnect the wire. Push the bracket backward and it will drop down.
Posted on Mar 06, 2011
Saw the machine again today, fan at the rear of the machine was blocked by some foam!!, removed item, worked :)
Posted on Jan 31, 2008
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Posted on Jan 02, 2017
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