RV-E3J encoder data miscount error

[bmklawt]

New to the forums, this is my first post.
I recently purchased a Mitsubishi RV-E3J MELFA, my son is interested in robotics and I found this dirt cheap, thought he and I could play around with it.
Any way when I turn this on I get the error message “245” Encoder data miscount error, I have switched the encoder to a different joint and the error follows the encoder.
Is there a way I can check this encoder and repair it or someplace I could get the encoder repaired, I am certain I could not afford a new encoder.
Encoder Type YRE-154, a quick internet search shows this is from Okuma.

See images 1 and 2 of the encoder here: https://sites.google.com/site/bmklawt/home/robot/robot-pictures
 
Any help I can get will be greatly appreciated,
Bruce 

[wookongbun]

Hi,Bruce

Do you have resolved this problem?I'm stuck with this error few days ago,it drive me craze .