Inspections（検査 - Yamaha MW12 Service Manual

■ INSPECTIONS
1. Scope
This inspection specification is applied to the mixer MW12.
2. Power Supply
The voltage is within ±10%.
AC Adaptor shall be used.
Destination Voltage
J 100V
U 120V
O 220V
K 220V
B 230V
H 230V
A 240V
3. Inspections
3.1 Preparation
* Application software of USB AUDIO
Use the software that can be set as follows.
(Cubase LE, TWE, etc. Refer to page 33 for the example in the Cubase LE Windows version.)
Sampling rate----48KHz or 44.1KHz
Resolution --------16 bits
* Unless otherwise specified, the input signal should be sine wave at 1kHz. The source impedance should be
150 ohms.
* The load resistance for each output terminals are as follows,
PHONES (L/ R)
ST OUT
Others
Unless otherwise specified, the operation elements shall be set as follows,
CH INPUT (1-4)
●
GAIN control
switch
HI,MID,LO EQ Gain control
AUX1,AUX2 level control
AUX1 PRE switch
PAN control
ON switch
PFL switch
1-2 switch
Fader
ST CH (5/6,7/8)
●
GAIN control
switch
HI,MID,LO EQ Gain control
AUX1,AUX2 level control
AUX1 PRE switch
PAN/BAL control
ON switch
PFL switch
1-2 switch
Fader
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AC Adaptor
WC704000
WC704100
WC711100
WC704400
WC704300
WC704200
WC704500
: 40 ohms (3W or more)
: 600 ohms
: 10 k ohms
: MAX (-60/-34dBu)
: OFF
: CENTER
: MAX
: OFF (POST)
: L (turned counterclockwise fully)
: ON (LED shall light) when taking measurement only/ OFF otherwise
: ON (LED shall light) when taking measurement only/ OFF otherwise
: ON when taking measurement only/ OFF otherwise
: MAX
: MIC:MAX (-60/-34dBu)
: OFF
: CENTER
: MAX
: OFF (POST)
: L (turned counterclockwise fully)
: ON (LED shall light) when taking measurement only/ OFF otherwise
: ON (LED shall light) when taking measurement only/ OFF otherwise
: ON when taking measurement only/ OFF otherwise
: MAX
MW12
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