Sharp copier error u2 - Sharp Office Equipment & Supplies

SOURCE: Error code U2 on a AR201 copier

To find out the sub code for the U2 error hold down the Start key. Below is a list of the errors:
U2-04 EEPROM serial communication error
U2-11 Counter check sum error
U2-12 Adjustment value check sum error (EEPROM)
U2-40 CRUM communication error

To clear the U2-40 error try pulling out the toner cartridge and firmly reinstalling it. If that doesn't work you must install a new toner cartridge. There is a CRUM chip on the cartridge that keeps up with how many impressions have been made with that cardridge. You cannot "refill" these cartridges without replacing the CRUM. This problem occurs frequently with remanufactured cartridges.

To clear other U2 errors you must enter simulation mode.
Perform the following procedure to enter the simulation mode.
Clear key - Interrupt key - "0" key - Interrupt key - 16 - Start key - Start key. The unit should reset.

SOURCE: Sharp AR-5127, the error code U2-40

U2-40 is a board error, F1-15 is finisher lift motor error.

To reset: #, interrupt, clear, interrupt. (screen should say service mode), enter 16, print, are you sure? , yes.

For the finisher error, follow above procudure, entering 14 instead of 16. if error returns, disconnect the finisher

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: Code U2-05 call for service code!

This procedure may help, it works on older models.
Press # key
press * key
press C key
press * key
enter 16
press start key
Turn the machine off and then back on
Good luck

SOURCE: Solution for SHARP AR 5127 error U2-40 call for service

This means that the cartridge's sensor is miscommunicating with the copier memory thus the code U2 -40. You should clean the inner sensor connector and the toner sensor of the spilled toner by low blower. Perform this code ;# , interrupt , C, Interrupt keys in that order and press 16 then Print key and the code will be cleared.