Inspections; Power Indicator Inspection And Initialization Of Digital Effect; Mixer Section Inspection - Yamaha MG24/14FX Service Manual

INSPECTIONS

1. Scope
This inspection specifications is applied to the mixer MG32/14FX and MG24/14FX.
2. Power Supply
Power supply cord that fit the mixer's destination shall be used.
3.

Power Indicator Inspection and Initialization of DIGITAL EFFECT

1. POWER LED shall light when the unit is turned on.
2. Turn off the both switches of EFE1 ON & EFF2 ON.
3. Turn off the power supply switch.
4. With the EFF2 ON switch and the TAP switch pushed, turn the power supply switch ON.
A finger is previously lifted from EFF2 ON switch and a finger is lifted from TAP switch after it.
(EFF1 ON, EFF2 ON and TAP LED light up.)
5.Turn the PROGRAM select switch of EFF2.
(EFF1 ON, EFF2 ON and TAP LED put out.)
6.In this state, wait 5 seconds or more and then turn off the power supply switch.
7.Turn the power supply switch ON, both EFF1 ON and EFF2 ON switches shall light.
If not, do the 2~7 again.
4.

Mixer Section Inspection

4.1 Preparation
The load resistance for each output terminals are as follows,
• PHONES (L,R):
• ST OUT:
• MONO OUT:
• GROUP1-4 OUT: 600 ohms
• AUX1-6 OUT:
• Others:
Unless otherwise specified, the operation elements shall be set as follows,
• CH (1-16: MG24/14FX, 1-24: MG32/14FX) INPUT
PAD switch
GAIN control
HPF switch
EQ (HIGH, MID, LOW) level control
EQ MID frequency control
AUX1-4 level control
EFF1-2 level control
AUX1-2, 3-4 PRE switch
AUX5, AUX6 switch
PAN control
ON switch
PFL switch
1-2 switch
3-4 switch
ST switch
Fader
• ST CH (17-24: MG24/14FX, 25-32: MG32/14FX)
GAIN control
EQ (HIGH, HI-MID, LO-MID, LOW) level control
AUX1-4 level control
EFF1-2 level control
AUX1-2, 3-4 PRE switch
AUX5, AUX6 switch
BAL control
40 ohms Unbalanced
600 ohms Balanced
600 ohms Balanced
Unbalanced
600 ohms Unbalanced
10 kohms Unbalanced
OFF
MAX (-60dBu)
OFF
CENTER
MIN
MAX
MAX
OFF (POST)
ON when measuring AUX5, AUX6 only / OFF otherwise
L (ODD)
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
ON when taking measurement only / OFF otherwise
ON when taking measurement only / OFF otherwise
MAX
MAX (-34dBu)
CENTER
MAX
MAX
OFF (POST)
ON when measuring AUX5, AUX6 only / OFF otherwise
L (ODD)
MG24/14FX
MG24/14FX
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