20 Most Recent Canon PC-940 Black and White Copier - Page 7 Questions & Answers

Make sure you have opened all doors and pulled out all paper trays. After turning the copier on and off if jam light stays lite then you will most likely have a sensor problem (fell out or broken)

Physically turn it while gently pulling on it.. when its at its 'home' location it will come out..

make a copy and look to see if the scanner lamp comes on. if the lamp is broken and does not light, you will get a black copy.

Why would a fuse have any thing to do with a clicking sound? If the fuser or fixing unit was having a problem you would get a error code. Have you replaced the toner or drum cartridge any time? If so, was the noise there before? If it was not recheck the installation and if you put the old parts back in and you have no noise, it has to be the new cartridge.... Good Luck

Hello sir; There have two ways to check it; 1, if you make copy throught by ADF, then you have to clean a piece narrow glass at the end of plateform, 2, if no. 1 case not apply to you, then you have to change drum cleaning blade.

This can be one of several problems -
Dirt on the glass - (or inside)
Dirt on mirrors.
Failing ioniser or HT circuit
Failing or dirty electrostatic roller.
Failing toner scraper blade
Damp paper
Dirty heated (fuser) rollers (most common failure)

Most items that are likely to fail should be easy to get to - so remove and clean these first - then check again.

If you want a run-through of the basic mechanism involved - try here to help understand the process,

The power supply is blow off or in best case only fuse. You need a specialist to fix it.

Most likely a defective toner cartridge...try another

check whether the network cable or serial cable is properly connected to devices.ping to machine ip address see there is any reply.

On a similar rebadges machine i had the same problem. IT turned out being that the LSU glass had come slightly unglued and fell back into the machine what caused all the copies to be skewed and blurred. I'd give that a go first.

Check the toner cart and the drum is it old/new is the toner cart properly installed. Is the LASER glass clean it should be protect by a cover ensure machine is off when checking and cleaning the LASER **** glass. Also check if you can print out a machine developed document such toner/pages printed document to see if this problem is related to the scanner or the drum/toner/LASER, if these document print out clan then the problem is with the scanner Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

This error indicates the fuser film is not in the home postion, or the film is ripped/torn. Unless you are able to service it yourself, you will need to get a technician in.

Your copier cartridge is damage or fuser cover is broken change it
solve your problem.If you are success then vote me

wouldn't be surprised if it turns out to be a toner cartridge. Have you had to replace it sine the noise began? Is it remanufactured / compatible? I won't be surprised if the grinding stops once it's replaced. Just my 2 cents.

check to see if there is a torn piece of paper still in the bottom tray somewhere, its sounds as if there is still a torm piece in there somewhere

Difficult to say, but it sounds like you may have somehow dislodged a mirror, or somehow contaminated the optical section. You'll probably need to have it looked at.

It's a 95% chance the lamp under the glass is dying and needs replaced, usually a $150.00 expense including parts and labor, which may be wiser to put towards a new machine.
Good luck

Bob

that is the symbol for a paper jam. the figure 8 represents the rollers and the zig zag is the crumpled paper. Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/charles_45d8d6c78cd9f0b6

You could have a broken exposure lamp. Does the scan bar light up when you make a copy? If not that is the problem. You might also ck the contacts on the machine where they touch the toner cartridge. The toner cartridge opens a shutter to the drum when you slid it into the machine and that may be broken.

if the machine goes straight into jam code once switched on, its usually a good sign a sensor has broken or it has fallen out.
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