Roland V-Accordion FR-8x Service Notes page 39

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Setting:
Connect 2 x Mono Audio cables from OUTPUT R/MONO and L/MONO to the oscilloscope CH1-CH2
inputs.
Oscilloscope setup: 5 V/div
Attention:
The two channels OUTPUT R/MONO and L/MONO must be inverted. When a signal is generated on the left,
in fact it must come out from OUTPUT R/MONO, and the other way round, when a signal is generated on the
right, it must come out from OUTPUT L/MONO .
Press the Treble registers [1] - [2] - [3] - [4] - [5] one by one and check the values on the oscilloscope as
shown hereunder:
T
e r
b
e l
e r
g
s i
e t
[ r
] 1
T
e r
b
e l
e r
g
s i
e t
[ r
] 3
Treble register [5]
Mute ON check:
Keep the Treble register [5] pressed, verify that, the wave forms immediately disappear, and then return.
T
e r
b
e l
e r
i g
t s
r e
2 [
. ]
T
e r
b
e l
e r
g
s i
e t
[ r
] 4
FR-8X/XD
45

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