Question about Canon Laser Class 810 Plain Paper Fax

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Problems with faxing

We unplugged our machine to move it to another phone line. Worked at the other phone line but when we moved it back to the original phone line it no longer faxes. We keep receiving NG/Busy Signal notices.

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  • fitjoinery Jan 15, 2009

    We have a MF8180C & we had a power outage now we cannot receive or send faxes. We keep getting the same error report busy/no signal.


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Plug the phone cord into the LINE port

Posted on Nov 26, 2008

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When I enter a fax number and hit send, a message saying "too many destinations" appears. How do I fix this?

This solution worked. Turn it off at the switch on the machine. Unplug the power cord from the machine and any phone lines. Leave it alone for a half hour. Then, plug in the power cord, then the phone lines. Then turn it back on using the switch on the machine. After it cycles on, re-program the machine. Poof! Problem solved. Looks like you have to give the machine amnesia for it to work again.

Aug 15, 2013 | Office Equipment & Supplies

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You probably have the wrong phone line going to your fax machine. The wire you have going to your fax machine has two lines in it. So when you send a fax it's going out on your voice line. You can go to Radio Shack and get a part that splits the two lines that are in the phone wire so you can select the correct line for your fax machine. the part is

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Cannot receive faxes

Hello, my name is Curtis, and I am a Customer Service Rep. for Sharp Electronics. If you cannot receive faxes from multiple machines than you might want to check to make sure you machine is first set to fax mode, also check to make sure than the phone service for the machine is analog and not digital. The machine will not work well with digital service. You could attemp a work area reset on the machine, the procedure for doing so is to First take out all the paper, Second unplug the main power cord, not the phone line. And Last after about 30 seconds to press and hold down the start and stop keys while plugging the machine back in. Once it turns back on you can replace the paper. If there is still a problem please contact Sharp at 1-800-237-4277.

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Check the phone line with a regular phone.

Make sure you are plugged into the LINE port of the fax.

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Unplug the power cord. Try to move the cartridge to the right by hand.

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Some things to check-

I know you said it wasn't unplugged but check the phone line is plugged into the line socket. I don't know how many times I had people who people unknown to them (children, cleaners) have knocked out the line cord and plugged it back in the wrong socket.

Hit the on-hook or hook button and check for dial tone. This will check if the line is still working.

Also the fax will have a mode button. If it has been bumped while moving it could be on manual mode (the machine will not automatically pick up)

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Can you get a dial tone?... check that you have pluged phone line in to correct socket and that phone/fax line works with standard phone.



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1 Answer

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check the fuse,rectifiers in the power supply board of your fax machine

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