I have Sharp AL 1631 and it is almost brand new...
I just used up factory supplied Toner and put a new one genuine Sharp. Copies are blur and not "sharp" it almost looks like they are not focused. I also replaced drum cartridge in case it was a problem... did not help. Cleaned also Transfer Charger - no change. Got back to old Toner cartridge but did not make any difference....
Any idea what that may be?
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When these Sharp AL series machine just run and run it means they are low or out of toner. This is especially true if you are hearing a light thump thump noise while it is running. Just let it run and after 5 minutes or so it should shut down and then replace toner light should come on. This is the small red light that looks like a stack of 6 dots.
Either replace the toner or have your existing toner refilled.
Good Luck and Thank You for using Fixya.
Take the new cart. out and reinstall the old cart. Does the noise disappear? I would tap and shake the toner cart. BUT BE CAREFULL, the cart is ready to spill toner. On the box and in the instructions it tells you, or should, that you must shake and tap the outside of the cart. This is due to settling and the toner maybe packed. By tapping and shaking it will feel the toner. If the toner is packed it will put undue pressure on the augers inside the toner cart. and cause a grinding noise. If after tapping and shaking, reinstall the new cart. and check. If everything is ok -- great. If the noise remains contact the company your purchased the cart. from and ask for a replacement. These cart. are mass produced and mostly reused ( refurbed). Parts wear now and they do not replace the inside parts, they just repack with toner and seal.
the problem in your machine is on the drum unit there is a arching on the mc unit.located in the upper portion of the drum unit.if you have an old drum unit try to install it again just for testing.and check if ther is a dumping toner again.
Several things can cause this problem;
The drum cartridge is not being cleaned properly or there is a problem with the toner cartridge .
Take out the drum cartridge and inspect it for any signs of the defective image.
If that doesnot solve the problem, then Call a tech.