Inspections （検査 - Yamaha MG10/2 Service Manual

I
INSPECTIONS
1. Measurement conditions
1-1. Environment
Normal temperature (10 to 35C)
Normal humidity (45 to 85%)
1-2. Power Source
The voltage is within +/-10%.
AC Adaptor (PA-10) shall be used.
WC703600 (H,W:230V) or WC703500 (U,V:120V), WC703700 (B:230V), WC703800 (K:220V), WC703900 (A:240V),
WC711000 (O:220V)
2. Electric characteristics
2-1. Preparation
The load resistances for each output terminals are as follows,
PHONES (L/ R):
Others:
2-2. Unless otherwise specified, the operation elements shall be set as follows,
• CH (1-2) INPUT
GAIN control
80 switch
EQ (HIGH, MID, LOW) level control
AUX level control
PAN control
CH LEVEL VR
• ST CH (3/4, 5/6)
GAIN control
80 switch
EQ (HIGH, MID, LOW) level control
AUX level control
PAN/BAL control
CH LEVEL VR
• ST CH (7/8, 9/10)
EQ (HIGH, MID, LOW) level control
AUX level control
BAL control
CH LEVEL VR
• MASTER control
RETURN to ST level control
2TR IN to ST level control
C-R/PHONES level control
ST Master VR
• Others
PHANTOM switch
2-3. Unless otherwise specified, the input signal shall be 1kHz sine wave.
2-4. The input signal impedance shall be 150 ohms.
2-5. Indicator Inspection
POWER LED shall light when the unit is turned on.
40 ohms
10 kohms
MAX(-60dBu)
OFF
CENTER
PRE(turned counterclockwise fully)
L(turned counterclockwise fully)
MAX
MIC:MAX(-60dBu)
OFF
CENTER
PRE(turned counterclockwise fully)
L(turned counterclockwise fully)
MAX
CENTER
PRE(turned counterclockwise fully)
L(turned counterclockwise fully)
MAX
MAX
MAX
MAX
MAX
OFF
MG10/2
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