I came in maintenance mode from PRC100 to check my DKV Maark IV M4
in MAINTENANCE MODE
SENSOR MEASURE
executing MESURE
HS GS check
I have :
52key : E1 HS GS may be missing
(the key in fact is very slightly moving and the cord is not touched) . In manual play this key 52 works very well.
Can this info help to trace the problem ?