Yamaha MX61, Руководство по обслуживанию

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4. Other Inspections
Turn on the [ ] (STANDBY/ON) switch to start up on the normal mode.
Pop-Noise (PHONES)
Connect the oscilloscope to the [PHONES] terminal (L and R).
Turn on and off the [ ] (STANDBY/ON) switch sequentially.
Confi rm each output level is as follows at that time.
PHONES L: 500mVp-p or less
PHONES R: 500mVp-p or less
Pop-Noise (OUTPUT)
Connect the oscilloscope to the OUTPUT terminals ([L/MONO] and [R]).
Insert the jacks to both the [L/MONO] and [R] terminals at the same time.
Turn on and off the [ ] (STANDBY/ON) switch sequentially.
Confi rm each output level is as follows at that time.
OUTPUT L: 500mVp-p or less
OUTPUT R: 500mVp-p or less
Noise Level (PHONES)
Connect the level meter to the [PHONES] terminal (L and R).
Confi rm each output level is as follows at that time.
PHONES L: -85.0dBu or less
PHONES R: -85.0dBu or less
Noise Level (OUTPUT)
Connect the level meter to the OUTPUT terminals ([L/MONO] and [R]).
Insert the jacks to both the [L/MONO] and [R] terminals at the same time.
Confi rm each output level is as follows at that time.
OUTPUT L: -85.0dBu or less
OUTPUT R: -85.0dBu or less
AUX IN
Connect the level meter to the OUTPUT terminals ([L/MONO] and [R]).
Insert the jacks to both the [L/MONO] and [R] terminals at the same time.
Connect the oscillator to the INPUT terminals ([L] and [R]), and input the 1kHz ±5Hz, -6.0dBu sine wave.
Confi rm each output level is as follows at that time.
OUTPUT L: +1.4dBu ±2dB
OUTPUT R: +1.4dBu ±2dB
5. Initial Settings
Set each controller to the factory default settings as follows.
[ ] (STANDBY/ON) switch : OFF
[MASTER VOLUME]
: Min.
[DAW LEVEL] : Min.
A/D INPUT [GAIN] : Min.
MODULATION WHEEL : Min.
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MX61/MX49