Inspections （検査 - Yamaha MW12CX Service Manual

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INSPECTIONS
1. Measurement Conditions
1-1 Environment
• Temperature: From 5 °C to 40 °C.
• Humidity: From 30 % to 90 %.
1-2 Power Source
The voltage is within ±10 %. AC adaptor PA-20 should be used.
• U : 120 V (WC704100)
• H : 230 V (WC704200)
• B : 230 V (WC704300)
• A : 240 V (WC704500)
• K : 220 V (WC704400)
• O : 220 V (WC711100)
2. Mixer Check
2-1 Preparation
• The load resistances for each output terminals are as follows:
PHONES (L/R)
ST OUT
Others
2-2 Unless otherwise specified, the controls should be set as follows:
• CH INPUT (1-4)
GAIN control
80 switch
COMP control
EQ (HIGH, MID, LOW) GAIN control
AUX1, AUX2 level control (MW12C)
AUX, EFFECT level control (MW12CX)
AUX1 PRE switch (MW12C)
AUX PRE switch (MW12CX)
PAN control
ON switch
PFL switch
REC switch
ST switch
Channel fader
• ST INPUT (5/6, 7/8)
GAIN control
80
EQ (HIGH, MID, LOW) GAIN control
AUX1, AUX2 level control (MW12C)
AUX, EFFECT level control (MW12CX)
AUX1 PRE switch (MW12C)
AUX PRE switch (MW12CX)
PAN/BAL control
ON switch
PFL switch
: 40 Ω (=3 W or >3 W)
: 600 Ω
: 10 kΩ
Maximum (-60/-34 dBu)
OFF
Minimum
CENTER
Maximum
Maximum
OFF (POST)
OFF (POST)
L (turned counterclockwise fully)
ON (indicator should light) when taking measurement only /
OFF otherwise
ON when taking measurement only / OFF otherwise
ON when taking measurement only / OFF otherwise
ON when taking measurement only / OFF otherwise
Maximum
MIC: Maximum (-60/-34 dBu)
OFF
CENTER
Maximum
Maximum
OFF (POST)
OFF (POST)
L (turned counterclockwise fully)
ON (indicator should light) when taking measurement only /
OFF otherwise
ON when taking measurement only / OFF otherwise
MW12CX/MW12C
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