Dear members

I have with a Pittler machine NF251 and a Siemens CNC 8T after control on alarm 104 and 114
Messkreissfehler !!
I replaced both resilvers Singer 2500 Herz -brussless - 05988=CR4109 5004 without
success ! Still the same alarms after control on

MS 230 - 6FX1190-7AA00 (Messkreis board is installed)

I replaced it with an other board but the same error exist after control on !
But this board (replacement board is not new and already used and not tested else) can also be defect
Have any member other suggestions ??

Let me know

Mercedes