Roland G-70 Service Notes page 27

Feb.2005
3 - ADC
Press the USER PROGRAM 3 button, the display shows:
The LCD visualizes the values of the functions you are testing.
These values vary from 0 to +/-127 and the values of the slider potentiometers vary
from 0 to 255:
- ROTATIVE Potentiometers:
Balance
Voice
Harmony
Effect
- SLIDER potentiometers "Harmonic Bar"
After Touch (Check to carry out on the Keyboard)
Check on the keyboard that the After Touch value varies from 0 to 127 considering the
pressure carried on the button.
Foot Pedal
Insert the Expression EV 5 pedal in the socket Foot Pedal and verify, pressing the pedal
forwards, that the value will increase up to (127) and pressing it backwards the value will
decrease at the minimum one (0).
D-beam
This test is carried out working, at the same time, on the Trimmer VR1 of the CPU and on
the D-Beam as follows:
-Place your hand on the D-Beam pressure sensor at 13cm height (see picture 1) and
gauge the trimmer VR1 placed at the left lower corner of the CPU board, so that you
can read a value from 115 to 118 on the display .
-After the gauging, verify, moving your hand on the D-Beam, that there is a variation of the
value from 0 to 127.
Of course, when the D-Bean is not used, the value must be 0.
Fig. 1
To exit press EXIT button.
32
****** ADC ******
Pbender : 0000 – 4000 - 7F7F
Modul : 0 – 127
A .Touch : 0 – 127
Foot Pedal : 0 – 127
Dbeam : 0 –127
Balance : – 127 000 +127
Voice : 0 – 127
Harmony : 0 – 127
Effects : 0 – 60 – 127
Press EXIT to Skip.
16' : 0 – 255
5 – 1 / 3' : 0 – 255
8' : 0 – 255
4' : 0 – 255
2 – 2 / 3' : 0 – 255
2' : 0 – 255
1 – 1 / 5' : 0 – 255
1 – 1 / 3' : 0 – 255
1' : 0 – 255