Help with SK10 MRC

Hello

excuse me i have a yasnac SK10 with mrc controller, in the last year have issue with it, it loss the position and show me in the display defective encoder absolute data code "1260" and another errors, could you someone supportt with the manual for to ask the parts? all tha time we have mastering the robot, we replace ther batteries but no fixed the problem.

thanks in advance

Thanks for you reply. I did replace the battery pack and mastering but power off and power on and lost the calibration.

Thanks for your reply TSGIR i am searching the board with my supplier, when i replaced the component i going to inform, thanks in advance.