Paper jammed on Sharp FO-71 fax machine. This model does not have a power switch. Just plug it on and the machine will start with loading initialization but the cutter will not function and the display reads paper jammed. I was very carefull in loading the thermal roll. I repeated it many times but the same result. I think it must be a gear slippage but I could not find any gear defect.

1 - Grasp the finger hold and pull up to open the operation panel.
2 - Flip up the front paper guide.
3 - If you are loading paper that is 210mm in width, place the paper roll shims on each side of the paper compartment. (Note that Sharp recommended paper, including the initial roll, is 216 mm in width.) • The ribbed side of the shims should face in (toward each other).
4 - Unwrap the roll of thermal paper and insert the paper shaft.
5 - Place the roll of thermal paper in the compartment, making sure the ends of the paper shaft fit into the notches on each side of the compartment.
• Important: The roll must be placed so that the leading edge of the paper unrolls as shown. (The paper is only coated on one side for printing. If the roll is placed backwards, the paper will
come out blank after printing.)
6 - Insert the leading edge of the paper into the slot as shown. Continue to push the paper through the slot until it comes out the opening in the front of the machine.
7 - Make sure the paper comes out straight, and then flip down the paper guide.
8 - Close the operation panel, making sure it clicks into place.
• FO-71: A short length of the paper will be cut off.

try this

1. Turn off the printer.
2. Remove any paper trays. Inspect them for wrinkled or damaged paper.
3. Also open the back cover of the printer if this model has one.
4. Open any other doors that give access to the printer's paper path and to the toner or ink cartridge.
5. If necessary, remove the toner or ink cartridge. Place it away from light/ sun light to avoid damaging it.
6. If you find a piece of jammed paper, remove it by holding it with both hands and pulling firmly. The goal is to keep the paper from tearing. If several pieces are jammed together, try pulling out the middle piece first to loosen the jam.
7. If the paper does tear, try rotating the roller gears manually to free the paper. Don't force anything, though. Do this step especially if the jam message comes up repeatedly without any obvious paper jam, there may be a small tear of paper inside.
8. Ones the printer is free of paper Replace the toner or ink cartridge and paper trays, close any doors you opened and turn the printer back on.
9. If the printer paper jam message still appears, then there is still some paper in the printer. Reinspect the paper path.
10. see alternative if the problem is still not solved.
    

alternative :
Load a piece of thick paper, for example photo paper and press the resume button (may be diffrent button on diffrent models) a few times to the printer picks up the paper and puts it through the machine.

Try holding down the stop and start keys while turning the power on and see if that clears the problem.

Andrew

New fuser.

Hold down the stop and start key while turning on the fax, let go when you see 1 for yes 2 for no for memory clear. Press 1.

on hook is for dialing out some machine you push this button and dial the number to fax out.
there should be a off hook or stop button to release it

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Most likely you need to carefully go through the paper path and look for the locations of all the paper path sensors.
You probably have one stuck on the frame or a spring came off the flag and its not actuating properly.
Follow the paper path carefully from the feed rolls out to the exit. I am sure you will find a sensor not operating properly.
Actuate every one and make sure they have no resistance and that they return to the proper position.

Unplug the machine for 4 hours & then plug back in. If you get the same symptoms, it will be cheaper to replace with a new one. Power supply is probably blown.

Is it jamming at the document feeder, or in the blank paper tray? You may need to clean the feed rollers. Use a lint-free cloth (not paper) and some alcohol.