AR-M256 displaying error code u2-40 how do i fix it please?

If you have the install disc , Go into remove programs and uninstall it . then reinstall it . up date as there may be a new driver for it.

good day, my Sharp AR 5731 showing the message Call for Service . Code : H4-00 can you help me to fixed my problem. thanks and God Bless

U2 04 mean eefrom read write error serial communication error

enter code (# interrupt C interrupt) then give 16 then press copy.

U2 04 EEPROM serial communication error
11 Counter check sum error
12 Adjustment value check sum error (EEPROM)
40 CRUM communication error

this the U2 Code Error

all action bloked code: L6-10
please healp me

Hello sir; I'm not recognize this model number please double check,but I give you closer one to reset;
1, press "program", "interupt", "clear", "interupt".
2, enter 16 press start.
3, turn machine off and back on .

Try reset by pressing [#] [interupt] [C] [interupt] [1] [6] [start]

Error code U2 in Sharp copier AR 206 shows error or failure of toner crimp you can try to solve by replacing toner crimp

Or by reseting the error code by fallowing procedure

press c intrrupt 0 ( zero ) intrrupt contoneously after pressing all the light on control will go off then press 16 then press start switch

your prob will 100% solve.

if any more prob pl inform

There is a long list here for the U2 code so if you let me know I will tell you what it means..
Again what is the Last part of the Code?
If it is U2-40 code, it is a Crum Chip, Take the toner out clean the end of the toner cartridge, there is a chip, a small plastic connection piece with bronze/silver wire on it.
Or replace the toner cartridge.
You will also need to clear the code with simulation 16.
Turning the machine off might work but, not usually.