Yamaha MG10/2 Service Manual page 17

INSPECTIONS
1. Scope
This inspection specification is applied to the mixer MG10/2.
2. Power Supply
AC Adaptor shall be used.
V981040(H:230V 50Hz) or V981030(U:120V 60Hz), V981220(B:230V 50Hz), V981680(K:220V 60Hz),
V986200(A:240V 50Hz)
3. Power Indicator Inspection
POWER LED shall light when the unit is turned on.
4. Mixer Section Inspection
4.1 Preparation
The load resistances for each output terminals are as follows,
PHONES (L/ R):
Others:
Unless otherwise specified, the operation elements shall be set as follows,
•CH (1-2) INPUT
H P F switch
• •
GAIN Trim
HI, MID, LO EQ Gain control
AUX Level control
PAN control
CH VR
•ST CH (3/4, 5/6, 7/8, 9/10)
GAIN Trim
HI, MID, LO EQ Gain control
AUX Level control
BAL control
CH VR
•MASTER control
STEREO Master VR
AUX RETURN Level control
2TR IN Level control
C-R/PHONES Level control
•Others
PHANTOM switch
4.2 Gain
The output levels shall be within the range specified in the Table 4.2.1-4.2.6.
Table 4.2.1 CH INPUT(1, 2) [dBu]
INPUT
q
Mic
Line
1 Measure with the PAN control set at the center position. For others, turn the PAN control counterclockwise fully for the
ST L and turn it clockwise fully for the ST R.
2 Measure with the AUX Level control set at the POST (turn the AUX Level control clockwise fully) position.
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40 ohms
10 kohms
INPUT
Gain ST L OUT ST R OUT
Level
0 ± 2 *1
-72 Max
+1 ± 2 *1
-28 Min
0 ± 2 *1
-46 Max
manuals search engine
OFF
MAX(-60dBu)
CENTER
PRE(turned counterclockwise fully)
L(turned counterclockwise fully)
MAX
MIC: MAX(-60dBu)
LINE: MAX(-34dBu)
CENTER
PRE(turned counterclockwise fully)
L(turned counterclockwise fully)
MAX
MAX
MAX
MAX
MAX
OFF
AUX1 AUX2
0 ± 2 *1 -1 ± 2 +5 ± 2 *2
– – –
– – –
C-R OUT L C-R OUT R
+16 ± 2 *1 +16 ± 2 *1
– –
– –
MG10/2
17