Question about Canon imageRUNNER 400S Copier

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My copier canon IR400 displays the error code E803,i need the meaning of the code.

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Hello yaseen,
I just answered this question recently for someone. The fluorescent lamp that illuminates the image of the document you wish to copy/scan has become weak. When you first power up the copier it goes through a series of checks and adjustments to make sure you have the best quality copy. One of those checks is to turn the scan lamp on, that value is measured, and then the lamp voltage is adjusted up and down till it reaches a "target". If the target cannot be met(and in your case the light intensity could not be raised enough) then you will get this error code. I will try to help. To verify the lamp is even coming on, turn the true main power switch off. Then power up the copier and observe the scan lamp. At some point during the initial start up the lamp should come on for its measurement. In order to see this the document feeder must be in the up position. If the lamp does not come on then the most likely fix is a new lamp (we hope its not the circuitry that drives the lamp). So, if it does indeed come on then here's what we can try. ATTENTION!!!! the following suggestions REQUIRE that the copier is TOTALLY UNPLUGGED !!!. This is a DANGEROUS AREA to be near if the copier is plugged in ! OK? Ok, remove the large copy board glass. On your device I believe there are 2 screws to the right of it that allow you to remove a cover which then allows you to remove the glass. Clean it thoroughly on both sides keeping in mind the orientation of the glass. set it aside. Now by hand , slide/pull the scan lamp assembly to the right, the direction it moves naturally as it scans a document..There will be some slight resistance. Locate the lamp and with a moist(not wet) soft cloth clean the lamp. Follow that with a dry soft cloth. Make it perfectly clean especially at the ends. Notice the shiny reflectors around the lamp.Clean those as well. While you are there, clean the 3 mirrors that bounce the light/ image. Just look for 1 mirror below the lamp, and 2 mirrors that are located to the left of the lamp, the distance of the 2 mirrorrs from the lamp will vary depending on how far you move the scanner/lamp assembly.Now here's the part where I have to help you visualize something that I can't point to and that you never new existed so bare with me.
There is a plate you need to clean that is to your left. If you push the scanner all the way to the left until it stops you will have found the scanner's "home position". When the copier first comes on and does it's checks it turns the lamp on (while at its home position) and reflects light against a plate called the "standard white plate". It is used as a referrence for what "perfect white" should be. It needs to be cleaned. So move the scanner to the right again so you can get to the area where the lamp would have looked at if it were "home" and doing it's self check. You can't see it, but its an area that would be above the lamp if it were home.So its underneath what you see. Clean it as well. Just clean everthing in that "underneath area". Same method, perhaps a bit of glass cleaner HERE only. Use as many soft cloths as needed. Ok, finally, wipe the actual lamp itself off one last time with a moist cloth and a little alcohol. The lamp needs to be free of the oils of your fingers. Make sure everthing is clean and dry. We want everything to be bright and shiny. Now re-install the copy board glass and power the copier up. Now there is no doubt that the lamp is weak, but it may be able to now boost it's ouput enough to hit the "target" it needs to. I hope this helps. Take care, and let "FIXYA" know if I did indeed help. :-) SPINAL

Posted on Mar 12, 2011


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Posted on Jan 02, 2017

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SOURCE: my copier canon IR400 displays

I can give you the meaning of the code, but I'm sorry I can't necessarily "FIXYA" as the possibilities are many. The code means that when the copier went through its initial checks to make sure it was ready to perform properly for you, it "detected/percieved" that the scan lamp that illuminates your documents could not reach a brightness that would allow the copier to provide you with the copy quality you would expect.The copier has many ways of compensating for wear and age. Like turning the voltage/ power to the scan lamp UP .The copier has compensated as far as it can. The scan lamp is fried or close to it.What you must understand is that there are MANY variables that may give this code. The most likely is indeed the scan lamp as it is like any other lightbulb it weakens with time. The part # is FH7-3314-000. Now this may help. What happens when you first turn the copier on it does many self checks. One is to push the scan lamp to it's home position which of course is to the left.The lamp(flourecent) turns on and shines onto a white plate called the "standard white plate". The copier uses that as the standard for what white is and calibrates itself from there. "IF" the standard white plate is dirty (yellowed from time or dirt) then the copier knows no better than to turn up the power to the lamp as it is looking for a reflection that is bright enough to make good copies. If the plate is dirty then the lamp cannot overcome the dim reflection. So, power off the copier, clean the mirrors with a soft cloth and mild cleaner (water and Windex) and clean the underside of where the the lamp sits when it is at rest/"HOME position. What I mean is, when you first turn the copier on, and the document feeder is in the up position, you will see the scan lamp come on. Observe closely the area that it is "illuminating". THAT is on the underside of the far left and also needs to be cleaned.Just make sure that when you seek to clean stuff that the copier is OFF, for YOUR safety. So, we have a code that means the lamp can't get bright enough, and it may be bad.Or , the white plate may be dirty and the lamp can't get bright enough. The mirrors that you see (and there are 3) could be dirty and cause the light to be bad. Those are the basic, most common causes. I hope I helped you, I know I have explained the code and the most common causes. If I had a screwdriver that would reach you I would use it. :-) Pleasse let "FIXYA" know I helped to some degree, The really cool thing would be if you and I did indeed save you an expensive service call. Take care. SPINAL

Posted on Mar 02, 2011

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