Roland ME-80, Заметки по обслуживанию

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23
Jan. 2014 ME-80
MUTE Check
1.
Make the settings shown below on the oscilloscope and connect it to the
Gt. AMP OUTPUT L/MONO and R jacks.
ch1: 2.00 V/div, ch2: 2.00 V/div, TIME: 1.00 ms/div
2.
Depress the pedal
MEMORY/MANUAL CTL
.
The MEMORY/MANUAL CTL LED lights up.
3.
Verify that no waveforms are output.
fig.test5-8.eps
AUX IN Check
1.
Make the settings shown below on the oscillator and connect it for input
to the
AUX IN (L, R) jacks.
200-Hz sine wave at 2.0 Vp-p
2.
Make the settings shown below on the oscilloscope and connect it to the
Gt. AMP OUTPUT L/MONO
and
R
jacks.
ch1: 1.00V/div, ch2: 1.00V/div, TIME: 1.00 ms/div
3.
Press EDIT .
The
PEDAL FX
LED lights up.
4.
Verify that the output value is between
1.9
and
2.1 Vp-p
.
fig.test5-9.eps
OUTPUT MONO Check
1.
Set the signal generator as shown below, and perform input only to the R
channel of the
AUX IN jack.
200-Hz sine wave at 2.0 Vp-p
2.
Make the settings shown below on the oscilloscope and connect it to the
Gt. AMP OUTPUT L/MONO
and
R
jacks.
ch1: 1.00 V/div, ch2: 1.00 V/div, TIME: 1.00 ms/div
3.
Verify that the waveforms are output to the only ch2 (R channel).
fig.test5-10.eps
4.
Detach the plug from the Gt. AMP OUTPUT R jack.
Verify that the waveforms are output to the only ch1 (L channel).
fig.test5-11.eps
5.
Switch off the power.
6. Battery Operation Check
1.
Detach the connected AC adaptor.
2.
Insert batteries into the battery box, then switch on the power.
Verify that the 7-segment LED display lights up.
3.
If normal operation can be verified, the test results are considered to be
OK (passed).
4.
Switch off the power.