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5.ENCODER & LCD
1.
Rotate the ENCODER to the right (clockwise) and confirm that the LCD
becomes darker.
2.
Rotate the ENCODER to the left (counterclockwise) and confirm that the
LCD becomes lighter.
3.
Adjust so that the black portions are crisply defined, and that no black
bleeds into the background portion.
4.
Press the [ENTER/YES] switch to store the standard reference contrast
setting.
"Complete!" appears in the display, and the procedure advances to the
next step.
6.KNOB/FADER
1.
Following the directions in the LCD, adjust the knobs and faders from
MIN to MAX.
2.
Each time a knob or fader is adjusted from MIN to MAX, the next knob or
fader to be adjusted is indicated in the LCD screen.
If a knob or fader other than the one indicated is adjusted, the message
"*Wrong Fader/Knob*" is displayed.
When finally the Master fader is adjusted, the procedure automatically
advances to the next step.
7.MIDI
1.
Confirm that, with no MIDI cable connected, "--" is indicated in the
screen.
2.
Connect the MIDI IN and MIDI OUT connectors with a MIDI cable.
Confirm that "**" appears in the display, followed by "OK."
3.
Press the CURSOR [->] button to advance to the next check.
8.MUTE
1.
A signal (200 Hz sine wave) is output from the internal oscillator, and the
muting is repeatedly switched on and off at a fixed interval.
2.
Connect an oscilloscope to LINE OUT L/R.
3.
Connect a pair of stereo headphones to the PHONES jack.
4.
Connect a device equipped with a DIGITAL IN connector to DIGITAL
OUT.
5.
Check the waveform from LINE OUT L/R and the output form the stereo
headphones and DIGITAL OUT to confirm that the output appears and
disappears at the fixed interval.
6.
Press the CURSOR [->] button to advance to the next check.
9. GUITAR/MIC1 A/B
1.
Connect an oscilloscope to LINE OUT L/R.
2.
Input a 200 Hz rectangular wave at 5 mVp-p to the MIC1 (XLR)
connector.
3.
Confirm that the waveform from LINE OUT L/R alternately appears and
disappears at a fixed interval. Also confirm that there is no irregularity in
the waveform.
4.
Input a 200 Hz rectangular wave signal at 60 mVp-p to the GUITAR/
BASS jack.
5.
Confirm that the waveform from LINE OUT L/R alternately appears and
disappears at a fixed interval. Also confirm that there is no irregularity in
the waveform.
6.
Press the CURSOR [->] button to advance to the next check.
10.AF-AD
1.
Connect an oscilloscope to LINE OUT L/R.
2.
Input a 200 Hz sine wave at 15 mVp-p to the GUITAR/BASS jack.
3.
Turn down the MIC1 [INPUT SENS] knob until it is turned down
completely, and confirm that the left and right waveforms are of equal
amplitude when the distortion in the LINE OUT right channel is no
longer present.
4.
Disconnect the GUITAR/BASS jack.
5.
Press the CURSOR [->] button to advance to the next check.
11.MIC1 PHANTOM
1.
Press the [ENTER] button to switch PHANTOM on and off.
2.
With PHANTOM on, use a tester to measure the voltage between the
MIC1 (XLR) #1 pin (GND) and #2 pin (HOT) and between the # 1 pin and
the #3 pin (COLD), and confirm that the voltage is in a range from 45 V to
50 V.
3.
Connect a phantom powered device (e.g., condenser mic) to MIC1, and
confirm that the input waveform is output from LINE OUT.
4.
Press the CURSOR [->] switch to advance to the next test.
12. GUITAR/MIC1 AUDIO
1.
Connect an oscilloscope to LINE OUT L/R.
2.
Input a 200 Hz sine wave at 100 mVp-p to the GUITAR/BASS jack.
3.
Rotate the MIC1 [INPUT SENS] knob from MAX to MIN to MAX again,
and confirm that the waveform from LINE OUT L/R changes smoothly.
4.
Rotate the [INPUT SENS] knob to the 4 o'clock to 5 o'clock position and
confirm that the PEAK LED starts to light up.
5.
Disconnect the GUITAR/BASS jack.
6.
Input a 200 Hz sine wave signal at 15 mVp-p to the MIC1 (XLR)
connector.
7.
Rotate the MIC1 [INPUT SENS] knob from MAX to MIN to MAX again,
and confirm that the change in the waveform from LINE OUT L/R is
smooth. Also confirm that no rasping or other noise appears in the
waveform.
8.
Rotate the [INPUT SENS] knob to the 4 o'clock to 5 o'clock position and
confirm that the PEAK LED starts to light up.
9.
Connect a short plug to the MIC1 (TRS) jack and confirm that the
waveform stops in the oscilloscope.
10. Disconnect the short plug from MIC1 (TRS).
11. Connect a short plug to the GUITAR/BASS jack and confirm that the
waveform stops in the oscilloscope.
12. Disconnect the MIC1 (XLR) connector.
13. Connect a noise meter to LINE OUT L/R.
14. Confirm that the residual noise in LINE OUT L/R is no more than -72
dBu (JIS-A) when the MIC1 [INPUT SENS] knob is set to MAX.
15. Disconnect the short plug from the GUITAR/BASS jack.
16. Confirm that the residual noise in LINE OUT L/R is no more than -76
dBu (JIS-A) when the MIC1 [INPUT SENS] knob is set to MAX.
17. Press the CURSOR [->] button to advance to the next check.
13.MIC2 A/B
1.
Connect an oscilloscope to LINE OUT L/R.
2.
Input a 200 Hz rectangular wave at 5 mVp-p to the MIC2 (XLR)
connector.
3.
Confirm that the waveform from LINE OUT L/R alternately appears and
disappears at a fixed interval. Also confirm that there is no irregularity in
the waveform.
4.
Press the CURSOR [->] button to advance to the next check.
14.MIC2 PHANTOM
1.
Press the [ENTER] button to switch the phantom power on and off.
2.
With PHANTOM on, use a tester to measure the voltage between the
MIC2 (XLR) #1 pin (GND) and #2 pin (HOT) and between the # 1 pin and
the #3 pin (COLD), and confirm that the voltage is in a range from 45 V to
50 V.
3.
Connect a phantom powered device (e.g., condenser mic) to MIC2, and
confirm that the input waveform is output from LINE OUT.
4.
Press the CURSOR [->] switch to advance to the next test.
BR-1200CD
19
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