Question about Sharp AL 1631 Copier

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How to locate and replace copier exhaust fan

I read on your site that a 3H error code on my Sharp AL-1631 copier means that it has an overheating problem. How can I go about checking and/or replacing an exhaust fan? Is that under the case on the left side of the unit, above the power switch? And where can I purchase the part?
Thank you!

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  • luvhaiti Feb 11, 2008

    Thank you for your help, Andy. I checked the picker fingers, and they seemed to be fine to me. What else could be causing the H3 error? The copier is only about 2 years old, and has 8491 total copies on it.

  • luvhaiti Feb 12, 2008

    Thanks again for your help. I did the reset as suggested, and now the machine attempts a start up, and I hear the fan, but then it immediately goes to an L4 error code. Another post an Fixya states that the L4 code is a drive motor problem. What do you think, or suggest?

    Thank you!

    Mark

  • Anonymous Dec 01, 2008

    sharp sf-2218 doesnt start coppying and a h3error code is blinking

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Hi, H3 is abnormal high tempeature in the fuser. Never had issues with the fan, probably you have a 'melt down', inspect the fuser through the sprung loaded flap and see if the three picker fingers that rest on the roller are melted. If they are then you require a fuser rebuild to include both fuser rollers, fingers, bearings and thermal fuse.

Cheers

Andy

Posted on Feb 11, 2008

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Thios models have trouble with upper fuser bearing being to tight this cause l4 codes take high oil put on the upper fuser bearing.

Posted on Mar 07, 2008

  • Kevin Shearer Mar 07, 2008

    This copier have problem with the upper fuser bushing being to tight take high temp. oil lube them. This will take care of l4 code.

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Hi, i fix the 3h code with Andy's reset solution the only extra was to open the side feeder and close it again.

thank you

Frances

Posted on Feb 28, 2008

Mark, yes L4 is main motor, do the reset again. If L4 reappears i still think you have fuser issues. Being very careful not to electricute your self, remove the fuser by the two chrome screws, leave still connected, as you look at the machine from the end, lower left hand side should be a chrome plate, which when pressed in makes the door switch. Switch the machine on while holding the fuser, make the door switch. Machine should turn over, also you should see the heater lamp come on.

Andy

Posted on Feb 12, 2008

Hi, try a main board reset by pressing these buttons= cancel, exposure, cancel, exposure. Display has to go dead, enter 14 then print. Should reset however if there is an on going fault then H3 will return. If it does then your thermal fuse, located in the fuser unit, will need replacing.

Cheers
Andy :)

Posted on Feb 12, 2008

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3H error means overheating...what you can do is supply new fans or clean the unit for dust and others. check for the exhaust fans if its still working. this will reslove your problem.

hope this helps

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