I have a sharp ar m335n copier with error code h2-01 how do i fix it?

SOURCE: how to fix a sharp ar-m455n error code u2-81

Dear sir; This error code means "scannor memory" problem, don't worry, we can reset it, the procedure as follow;
1, make sure you are in copy mode , then press "p", "*", "clear", "*".
2, enter 16 press start.
3, press "CA" to end simulation.
that's easy, if you need more help, just let me know, good luck.
HAVE A HAPPY HOLIDAY !!!

SOURCE: error code Sharp AR-M 257

The F2-04 error code you are getting is that you are using the wrong toner.It may be form sharp,but it toner chips is different.Only the chips swapping at the toner back can help you.

SOURCE: sharp ar 250 copier error code CH

CH - open cover in the paper feed area
CH blinking - Dev unit is not properly installed
For the 'CH' check the covers and make sure all covers are closed properly.
For the 'Blinking CH' take the dev. Unit open and the reinstall unit properly.
Pls rate – thank you

SOURCE: Sharp Copier AR -407 Error code H3-00

H3-00 means there was a problem in the fuser unit of the copier - a temperature problem. The correct temperature is not reached within a certain time.
It could be a thermostat or thermistor problem - both monitor temperature. you could remove the fuser unit and make sure these items are clean - no build up on them. there should be a center and side thermistor.
You can reset the error code in SIM mode by pressing the following keys one after the other "P" "interupt" "C" "interupt" then 14 and start/copy key. confirm if required. make sure the copier is restarted afterwards.
If the error persists then you may need new thermistors.
Hope this helps.

SOURCE: sharp copier ar-bc320 error code??

the DK message means it is time to replace the black drum unit. the drum unit is called an ARC26DU. open the front cover. remove the toner cartridge/s by lifting the green lever and pulling the toner out. Open the left side door. look at where you just pulled out the toner and there is one screw (facing you) holding each drum in place - loosen the screw and pull the drum unit out towards you....slide in the new drum unit.
to reset drum counter go into SIM mode by pressing the following keys one after the other "P" "*" "C" "*" then 24 and start/copy key then 7 then select the color drum you are replacing and confirm reset. make sure copier restarts afterwards

DO NOT refill these toner cartridges (even if you can find someone to do it) The toner cartridges for these machines have generally had ongoing problems as far as longevity and quality - refilling them will only make it worse.