RNS 315 ERROR

[zecab]

Hello ,

Does anybody have simple error on RNS315 ?

''No communication on main board''

Problem is on front panel board 100 % ... I tray from second unit front panel and unit working perfect with any problem.

Does any have electronic shematic or service manual for RNS315 unit ?

Or some idea , or simple error .

Any help

Thanks in advance .

zeca