23
Feb. 2014
FA-06
11. PHONES
This tests audio signals (L/R) output from the
PHONES
jack.
fig.test11.eps
1.
Connect the oscilloscope to the
PHONES
jack and display the waveform.
2.
Verify that the following signals are output.
PHONES L:
1-kHz ±50 Hz sine wave at 14.0 ±2.0 Vpp
PHONES R:
2-kHz ±50 Hz sine wave at 14.0 ±2.0 Vpp
If no problems are found, press
to advance to the next test item.
12. MAIN OUT
This tests audio signals (L/R) output from the
MAIN OUTPUT
jack.
fig.test12-1.eps
1.
Connect the oscilloscope to the
MAIN OUTPUT
jack and display the
waveform.
2.
Verify that the following signals are output.
MAIN OUTPUT L (Tip):
1-kHz ±50 Hz sine wave at 12.0 ±2.0 Vpp
MAIN OUTPUT L (Ring): 1-kHz ±50 Hz sine wave at 12.0 ±2.0 Vpp
MAIN OUTPUT R (Tip):
2-kHz ±50 Hz sine wave at 12.0 ±2.0 Vpp
MAIN OUTPUT R (Ring): 2-kHz ±50 Hz sine wave at 12.0 ±2.0 Vpp
3.
Press
ENTER
to change the frequency.
fig.test12-2.eps
MAIN OUTPUT L (Tip):
20-kHz ±500 Hz sine wave at 14.0 ±2.0 Vpp
MAIN OUTPUT L (Ring): 20-kHz ±500 Hz sine wave at 14.0 ±2.0 Vpp
MAIN OUTPUT R (Tip):
20-kHz ±500 Hz sine wave at 14.0 ±2.0 Vpp
MAIN OUTPUT R (Ring): 20-kHz ±500 Hz sine wave at 14.0 ±2.0 Vpp
If no problems are found, press
to advance to the next test item.
13. SUB OUT
This tests audio signals (L/R) output from the
SUB OUTPUT
jack.
fig.test13.eps
1.
Connect the oscilloscope to the
SUB OUTPUT
jack and display the
waveform.
2.
Verify that the following signals are output.
SUB OUTPUT L:
1-kHz ±50 Hz sine wave at 14.0 ±2.0 Vpp
SUB OUTPUT R: 2-kHz ±50 Hz sine wave at 14.0 ±2.0 Vpp
If no problems are found, press
to advance to the next test item.
14. LINE IN
This tests audio signals (L/R) input from the
LINE IN
jack.
fig.test14.eps
1.
Connect the UA-1G to the computer.
2.
Connect the OUTPUT jack on the UA-1G to the
LINE
jack.
* If the UA-1G is not available, input the following signals to the
LINE
jack.
L: 1-kHz sine wave at 2.5 Vpp
R: 2-kHz sine wave at 2.5 Vpp
3.
Play back the
MI073_01_LINE.wav
on the computer.
4.
Connect the oscilloscope to the
MAIN OUTPUT
jack and display the
waveform.
5.
Verify that the following signals are output.
MAIN OUTPUT L (Tip): 1-kHz ±50 Hz sine wave at 8.5 ±3.0 Vpp
MAIN OUTPUT R (Tip): 2-kHz ±50 Hz sine wave at 8.5 ±3.0 Vpp
6.
Detach the UA-1G from the
LINE
jack.
Execution automatically advances to the next test item.
Содержание Fa 06
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Страница 42: ...42 Feb 2014 FA 06 Circuit Board Jack Panel R MIDI LCD 7 Seg Board fig b jack1 eps ...
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Страница 60: ...60 Feb 2014 FA 06 Circuit Board Bender Encoder Panel L Panel C Board fig b panel eps ...
