Canon IR3235 grinding noise--see explanation

[axyun]

When machine is warming up or in cycle it makes a grinding sound every half second. Someone else was there and told customer he needed fuser unit. Ran machine with right door open and transfer unit closed and no noise.
Removed drum unit and dv unit and gears appear okay and both turn freely manually. I removed the gear behind the little cover on upper right inner frame at 2nd upper delivery because it mated with gear on upper right side door. I did that because noise only happened with door closed but still had grinding sound. I am thinking it may be a broken tooth on a drive gear but did not see one. Any help is very much appreciated as I am far from an expert on machine. I will post results. Frank/ActionPhotocopy

PS...Also the machine jams a few inches below fuser

[zoraldinho]

Re: Canon IR3235 grinding noise--see explanation

Someone else was Canon technician i suppose.Remove fixing unit end inspect gears.In any case you need spare part so call authorized Canon dealer.


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[canonbundy]

Re: Canon IR3235 grinding noise--see explanation

When machine is warming up or in cycle it makes a grinding sound every half second. Someone else was there and told customer he needed fuser unit. Ran machine with right door open and transfer unit closed and no noise.
Removed drum unit and dv unit and gears appear okay and both turn freely manually. I removed the gear behind the little cover on upper right inner frame at 2nd upper delivery because it mated with gear on upper right side door. I did that because noise only happened with door closed but still had grinding sound. I am thinking it may be a broken tooth on a drive gear but did not see one. Any help is very much appreciated as I am far from an expert on machine. I will post results. Frank/ActionPhotocopy

PS...Also the machine jams a few inches below fuser

Could be that someone has opened the R/H door too far and bent the hinge, close the door and check (by pushing bottom right corner of door) if there is any play and send a print through while pushing the door.

[Brian8506]

Re: Canon IR3235 grinding noise--see explanation

Also when you run it with the door open, the pressure on the fuser is off unless you put it back on with the white slide lever. Sounds like a fuser problem.

[northernlife]

Re: Canon IR3235 grinding noise--see explanation

Gear that drives the fuser. Brown gear in the fixing drive assembly will strip out if the fuser is seized or difficult to turn. Replace just that brown gear and the drive on the fixing assembly itself and off you go.

[axyun]

Re: Canon IR3235 grinding noise--see explanation

Thanks for the great responses guys. I understand now that when the door is close there is a pressure arm on door which applies pressure to pressure roller and fixing film. So leaving door open to watch fuser wouldn't give me the same action as when door is closed. The fuser was turning though without any noise so it may not be gear but more pressure form walking fixing film when pressure arm is engaged. I will post results when call is complete. Have a nice weekend . Frank

[Brian8506]

Re: Canon IR3235 grinding noise--see explanation

You can push that white lever in to apply pressure and test with door open

[axyun]

Re: Canon IR3235 grinding noise--see explanation

Thanks Brian. That's what happens when you service a lot of different equipment because business is slow but accumulating more knowledge on different makes and models is very rewarding. Have a nice weekend. Frank

[spectraindo]

Re: Canon IR3235 grinding noise--see explanation

Check the Hopper, sometimes the Toner Bottle makes noise when rotating.
Operate the machine with the front door open to see the Bottle.

[axyun]

Re: Canon IR3235 grinding noise--see explanation

Thanks Spectraindo. I don't think it's the toner hopper because I ran machine with right side door open and then there was no noise. If it was hopper then it would still make noise. Have a good weekend. Frank

[Simons]

Re: Canon IR3235 grinding noise--see explanation

Can you capture a video of it and upload to utube. The sound should be there. I find the sounds when others FAIL.

[axyun]

Re: Canon IR3235 grinding noise--see explanation

Thanks Mike. I am practically convinced that it is the fusing unit as there is no noise when right side door is open but when door is closed the pressure arm applies pressure to fuser and probably the fixing film "walked" and the noise is coming with the additional pressure. I will check it out further early next week. Frank

[canonbundy]

Re: Canon IR3235 grinding noise--see explanation

Could be that someone has opened the R/H door too far and bent the hinge, close the door and check (by pushing bottom right corner of door) if there is any play and send a print through while pushing the door.

The above is my original Post to this problem you have and I still say the bottom R/H side of the Right Door is not closing properly, the Registration Roller Gear is driven when the door is closed and if the hinge is bent it will NOT mesh correctly and will give a grinding noise also the paper will NOT reach the Fuser.

[axyun]

Re: Canon IR3235 grinding noise--see explanation

Hi Cliff. Thanks for staying with me on this one. I will check out the door when I go back there on Monday or Tuesday. Are you saying that if the door is open and I cheat the doorswitch that the registration drive gear will run smoothly with no noise but if the door hinge is bent and or the door is not closing in correct alignment that something on the door will interfere with the registration drive gear? I will push in bottom right side of door while running to see if there is a difference. GOODAY(sorry.. had to say it) . Frank

[canonbundy]

Re: Canon IR3235 grinding noise--see explanation

Hi Cliff. Thanks for staying with me on this one. I will check out the door when I go back there on Monday or Tuesday. Are you saying that if the door is open and I cheat the doorswitch that the registration drive gear will run smoothly with no noise but if the door hinge is bent and or the door is not closing in correct alignment that something on the door will interfere with the registration drive gear? I will push in bottom right side of door while running to see if there is a difference. GOODAY(sorry.. had to say it) . Frank

Hey you're catching on Frank, however I made a small boo boo when I last Posted -it should be Transfer Roller not Rego Roller ( had a few crissy drinks) but yes the same idea, had it a few times on the different models that use the R/H door system, usually cust gets cranky with a jam, opens door and it bounces back while they try to remove paper, then they really get shitty and push it open - gotta say I haven't experienced any gear meshing noises from Fusers, plenty of other issues though.
Ummm it's G'DAY.