Hi All.
A while ago I used to have an old FR3 and the bellows sensor was way out in terms of push-pull balance, beyond the built-in software auto-calibration adjustment. I suspect the problem was caused by the extremely poor design of the Roland's air hose - to - bellows connection.
Anyway, the solution was to enter the test mode, select bellows sensor offset and then manually adjust the pot next to the bellows sensor on the motherboard (which involved taking the grille off) with a screwdriver. Worked reasonably well.
Does anybody know how the same can be done on FR4x?
1) Test mode seems to be different on each model. Hey, why standardize the user interface, right? &%@£ing Roland.
Apparently FR4 goes into test mode by pressing DRUMS/Orch bass/ Chord bass buttons on startup, but there's no obvious way to get to the bellows sensor readings option!
2) Unscrew the grille... and you find out that the sensor is mounted on the other side of the motherboard and is a bugger to access. What's even more interesting, is that once you finally get to the sensor, there's no adjustable pot!
Does anyone know how push-pull balance can be manually adjusted on the bloody FR4x? Surely there's got to be a way to set the offset value manually? Roland are really bad, but not THAT bad, right?
A while ago I used to have an old FR3 and the bellows sensor was way out in terms of push-pull balance, beyond the built-in software auto-calibration adjustment. I suspect the problem was caused by the extremely poor design of the Roland's air hose - to - bellows connection.
Anyway, the solution was to enter the test mode, select bellows sensor offset and then manually adjust the pot next to the bellows sensor on the motherboard (which involved taking the grille off) with a screwdriver. Worked reasonably well.
Does anybody know how the same can be done on FR4x?
1) Test mode seems to be different on each model. Hey, why standardize the user interface, right? &%@£ing Roland.
Apparently FR4 goes into test mode by pressing DRUMS/Orch bass/ Chord bass buttons on startup, but there's no obvious way to get to the bellows sensor readings option!
2) Unscrew the grille... and you find out that the sensor is mounted on the other side of the motherboard and is a bugger to access. What's even more interesting, is that once you finally get to the sensor, there's no adjustable pot!
Does anyone know how push-pull balance can be manually adjusted on the bloody FR4x? Surely there's got to be a way to set the offset value manually? Roland are really bad, but not THAT bad, right?
