Actually, as a species, human beings are quite tolerant. What do I mean by this? You print something and go to the printer and it isn’t there. You look at the screen and you see the dreaded “Paper Jam”. So the process is pull out the paper tray, no stuck paper – put it back in. The message is still there. So open the front of the printer where the toner cartridges are, pull out the cartridges one at a time – no paper stuck behind, so replace the cartridges, and close the front panel.
The message goes away, and the printer starts humming and the printout comes out. Now this can happen for a while, until such time that even doing this doesn’t help. Oh, there is another door at the back of the printer, so open and close this one, and sometimes this helps and the printout comes out. Eventually, it gets to the stage where the paper jam happens almost every time you try to print.
We could have lived with this problem for months, because once we get our printout, we forget about the problem. This is what was happening to my Samsung CLX-3305FW Colour Multifunction Laser Printer. It hasn’t had a lot of use, from memory it is still on the second box of paper, so what could be wrong with it?
After a bit of googleing – (or is it googling?) it seems that the culprit is the paper pickup roller – which with printing and/or age, gets a bit smooth from the paper dust and other environmental issues. Fortunately, I was able to find a service manual for this printer, and the diagnosis also appears to be the pickup roller.
Hence, two days ago, I decided that it was time to have a look at the culprit. I removed the toner cartridges and stacked them neatly with a piece of newspaper on top to stop dust from getting onto them. This was a precaution since it is easy to take things apart and then it sits there for days, weeks,… Continuing, with the paper tray removed, I put the printer on its back – and just managed to stop the scanner lid from crashing down onto the toner cartridges.
With the printer in this position, I could see and reach the pickup roller quite easily. The roller is locked in place by a white piece of plastic, which is held by another black bit of plastic.
Here is a closeup of the pickup roller. By unhooking a tab on the black bit (where the dark line is), I could slide the white bit to the right, thereby giving some room for the roller to disengage, then spin it around 180 degrees and it comes out.
You can even see some paper dust. Then the pickup roller comes apart, by unlatching the two black bits.
I brushed the rubber tube, then decided to turn it around by 180 degrees and use the surface which was not exposed as the new pickup surface, then put it back together. Replacing it was just the reverse, put it back onto the shaft, spin it around, then lock it in place by moving the white and black bits to the left until it locks.
So, there it is, another repair done. Ok, so did it work? It did say paper jam on the first page I tried to print, but then did the rest of the pages ok. So time will tell if this is a permanent fix, or if I need to do more.