Roland BOSS RT-20, Заметки по обслуживанию

Страница: 17 / 26

17
Dec. 2005 RT-20
5.
Confirm the output waveform will be like the following picture.
fig.08-DA-2_70(200 mV/DIV, 1 ms/DIV)
<< 200Hz, 500 mV p-p +/-40 mV p-p >>
6.
And after removing the connection of OUTPUT A (MONO), connect an
oscilloscope to OUTPUT B.
7.
Confirm the output waveform will be like the following picture.
fig.08-DA-3_70(200 mV/DIV, 1 ms/DIV)
<< 400Hz, 500 mV p-p +/-40 mV p-p >>
9. DSP Through (Output) Waveform
Check
1.
Press the right pedal to start the DSP Though (Output) Waveform
Check .
fig.09-DSPTHOUT-panel
2.
Connect an oscilloscope to OUTPUT A (MONO).
3.
Connect an oscillator to INPUT A (MONO) and INPUT B, and input
rectangular waves of 200 Hz/500 mV p-p. (Or, confirm they have been
inputted.
4.
Confirm the output waveform will be like the following picture.
fig.09-DSPTHOUT-1_70(200 mV/DIV, 1 ms/DIV)
<< 200Hz, 500 mV p-p +/-40 mV p-p >>
10. DSP Through (PHONES) Waveform
Check
1.
Press the right pedal to start the DSP Though (PHONES) Waveform
Check .
fig.10-DSPTHPHO-panel
2.
Connect an oscilloscope to PHONES (L, R).
3.
Confirm the output waveform will be like the following picture.
fig.10-DSPTHPHO-1_70(200 mV/DIV, 1 ms/DIV)
<< 200Hz, 500 mV p-p +/-40 mV p-p >>
200mV/DIV, 1ms/DIV
200mV/DIV, 1ms/DIV
200mV/DIV, 1ms/DIV
200mV/DIV, 1ms/DIV