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Re: gear grinding noise
Sounds like it could be the toner cart is not mating properly. Sometimes this could be simply that the spring and flap arrangement on the plastic case of the cartridge has become misaligned. It is not necessary to have the flap(cover) present once the cartridge is installed in the machine. Just remove it in it's entirety if you can't re-align it.
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Hopefully one of the first four suggestions helped you. If not if you could post more detail as to what kind of noise is the machine making: a grinding noise, a squealing noise, how loud is it. descriptions such as that would be helpful in diagnosing the issue. Without a description of the noise any of those first four posts could be relevant. The easiest thing to try first would of course be a toner cartridge I have experienced them many times making noises especially if they're aftermarket cartridges. Other than that grinding noises are typically fuser related in that machine, with squealing and high pitch noises the description of the noise is very important because it could be a fuse or it could just be dirt in a gear cluster rubbing on a shaft or it could be the laser assembly. Ireally hate to post absolute diagnosis without enough detail especially when it comes to you having to spend more money. Hope this helps.
The grinding on this model is caused by one of the gears that interfaces with the fuser wearing down. In the process it pushes the bushing on the fuser out of position. Replacing the fuser may resolve your issue, but you should really replace the fuser and the gear. When you take out the fuser you will see an assembly of 4 gears on the inside-left of the printer. The bottom-right gear is the one that needs to be replaced.
it is possible that the drive gear in the fuser has failed. this will cause a very loud grinding sound in the back of the unit where the paper comes out. you can order new gears for it but sometimes its easier to replace the Fuser.in saying all this where is the noise coming from?
The grinding noise is the clashing of gears. The fuser is composed of 2 rollers, a metal or ceramic with a heater inside (bulb) and a silicon roller to apply pressure. The 'hot' roller is geared and the silicon roller can be geared or free floating. There is at least 1 paper sensor in the the fuser to let the unit know whether paper is there and there when it should or should not be. Sometimes, the sensor gets slightly dislodged and can actually cause a jam. If you are hearing a gear clash, the paper is being pushed through the machine and instead of being pushed through the fuser, it stops because the fuser rollers are not turning. The rest of the machine keeps pushing, crinkling the paper. If there is crinkling, then gears that drive the fuser need to be checked. It is this gear cluster and/or the fuser that need to be replaced.
this is a problem that HP refuses to acknowledges. Its caused by the gear that meshes with the main fuser gear..it wanders to the right as the printer prints. we are checking into a fix for this, since we are getting no cooperation for the manufacturer, Canon or HP. Canon makes the print engine
Not too good news I'm afraid. It sound like the fuser gear has failed. Generally the fuser unit (hot section or hot rollers in the back) need to be replaced. Usually when the gear has worn or failed the fuser rollers are also worn and need to be replaced. The gear can be replaced seperately but is a very risky operation and usually results in parts in the fuser unit falling appart due to age and wear, so it is best done as a unit. If possible do not run the machine as it can cause damage to gears around the fuser unit. The best option is to find out how much a fuser unit and labour to fit would be at your local service centre.
Does it only make the noise when printing. Do you hear the noise when sending out faxes? I have heard grinding noises onlt when using poor quality toner refills, or the fuser gear and or drive gear asm is stripped. First try a known good OEM toner.