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Author Topic: Laser printer repairs.  (Read 2449 times)

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Offline desborough

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Re: Laser printer repairs.
« on: August 26, 2004, 11:07:10 AM »
Look at this for part number information.

Problems with fusers

1) Ofsetting, build up of toner on rollers causing image repeat on paper.
2) Toner not fusing to paper due to damaged rollers.
3) Jamming do to damaged rollers.
4) Error codes due high or low temp of rollers.

Your options are
1) Pay HP to replace the fuser.
2) Pay a third party to replace the fuser.(Cheaper option than A)
3) Do it yourself, if you are reasonably competant you could probably change them yourself, once you work out which screws to remove it is quite a simple job on your printer.

You may need to replace both the upper assy and lower roller to fix the problem you are having. sounds like the lower claws have dug into the lower pressure roller.
 

Offline desborough

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Re: Laser printer repairs.
« Reply #1 on: August 26, 2004, 04:54:31 PM »
Nope, the fixing element is very strictly monitored, if the fixing temp is not right then the printer will come up with an error code. Cleaning the rollers may help but it is unlikely to be a temp problem.
 

Offline desborough

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Re: Laser printer repairs.
« Reply #2 on: August 27, 2004, 10:25:10 AM »
Well, I have worked on copiers and laser printers for 15 years  including these very printers albeit with the original Canon badge and they WILL throw up an error code if the fuser temp is out of spec. If they go over temp they will blow the thermal fuses, if any of the thermistors show an under temp they will throw up a code.

If you actually read the manual you will see that if there is  an error code listing. You have an internal problem if all three light are solid, if you then hold down the front panel the light will indicate what the internal problem is.      

If you get Solid Error and Ready lights------Fuser Error
   
If you are not getting these light, which sounds like the case you either:

1) Dont have a problem with fuser temp.
or
2) Do have a problem with fuser temp but the main board is f...ed and not registering that there is a problem.

Either way cleaning the heating element won't fix the problem. You may find that the rollers are caked up with toner causing poor fixing but it won't be down to temp.

end of sermon. :rtfm: