Roland V-Accordion FR-8x Service Notes page 34

July 2013
9. AFT calibration
The display shows:
Press the Treble register [14] to automatically calibrate the after touch.
10. ADC
The display shows:
Move the six digital potentiometers, one at a time, from the minimum to the maximum or vice versa, and make sure
that the value gradually changes from 0 (minimum) a 127 (maximum).
In addition, for the BALANCE-CHORUS-REVERB potentiometers, make sure that in the central position (a
mechanical click will be heard) the value is 64.
One at a time, press the first white key, a central black key and the last white key, then check that the display
shows the value of the After Touch (AFT) which gradually changes from 0 (minimum) to 127 (maximum).
Attention
While moving either a potentiometer or the After Touch, carefully check that the display shows the variation of one
value only and that this value corresponds to the name of the potentiometer which is being moved.
If several values change together, there must certainly be something wrong (the instrument might need to be
repaired).
Press the Treble register [14] to automatically calibrate the after touch.
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