Yamaha EMX3000 Service Manual page 29

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• In the state as described in 1 above, input the signal of the following level to MIC IN of CH1 and turn on each AFL switch. Then
check that the output as described in [Table 2-5] is obtained at C-R/PHONES OUT (L, R).
[Table 2-5] AFL switch
Input level GAIN Trim
-40 MIN
3. FREQUENCY RESPONSE
• In the state as described in 2, input a signal at the frequency of 20Hz and 20kHz and check that the output level at each output
terminal is within the range of +1.0/-3.0dB with 1kHz used as a reference frequency. At 20Hz with GAIN trim at the maximum
position only, however, the output level should be within the range of +1dB/-4.5dB. Also, check the output level at SUB IN for
C-R/PHONES.
4. EQUALIZER CHARACTERISTICS
• In the state as described in 1, move each of LOW, MID and HIGH of INPUT controls and check that the output level of the
frequency obtained at ST1 OUT (L, R)falls within the range given in [Table 4-1] with the output level obtained at the center click
position used as a reference.
• If the output level at a specified frequency does not fall within the range given in [Table 4-1], vary the frequency of the input signal
within the range of specified frequency +/- 20% and check that the output level within the range of [Table 4-1] is obtained.
[Table 4-1] EQ characteristics
Control GAIN Input signal frequency Variation width
HIGH MAX
MIN
MID MAX
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L 13942296513
MIN
LOW MAX
MIN
5. GRAPHIC EQUALIZER CHARACTERISTICS
• In the state as described in 1, move the fader of GEQ and check that the output level of the frequency obtained at ST1 OUT
(L, R) falls within the range given in [Table 5-1] with the output level obtained at the center click position used as a reference.
If the output level at a specified frequency does not fall within the range given in [Table 5-1], vary the frequency of the input signal
within the range of specified frequency +/- 20% and check that the output level within the range of [Table 5-1] is obtained.
[Table 5-1] GRAPHIC EQUALIZER characteristics
Fader name
Input signal frequency 125Hz
FADER MAX
FADER MIN
6. PEAK LED LIGHTING LEVEL
• In the state as described in 1, input a signal to MIC IN or L/MONO IN and check that the PEAK LED lights up at the input signal
level as in [Table 6-1].
[Table 6-1] PEAK LED lighting level
Input channel
Input signal level
7. METER LIGHTING LEVEL
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Check that when the output level of ST1 OUT (L, R) is as in[Table 7-1], each corresponding METER LED lights up.
[Table 7-1] METER lighting level
LED name
.
Lighting start level
LED name
Lighting start level
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ST1 OUT ( L,R ) MONO OUT
-7.0 +/- 2 -4.0 +/- 2
[Unit: dBs]
10kHz +12 +/- 2
-12 +/- 2
2.5kHz +14 +/- 2
-14 +/- 2
100Hz +12 +/- 2
-12 +/- 2
125 250 500
250Hz 500Hz
CH1~8 (MIC IN) CH9/10, 11/12 (L/MONO)
-43 +/- 2
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PEAK +8 +5
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+17 +/- 2 +12 +/- 2 +9 +/- 2
-3 -5 -7
+1 +/- 2 -1 +/- 2 -3 +/- 2
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MONITOR 1,2 OUT EFFECT OUT
-4.0 +/- 2 +2.0 +/- 2
Q Q
3 6 7 1 3
1K 2K 4K
1kHz 2kHz 4kHz
+12 +/- 2
-12 +/- 2
[Unit: dBs]
-17 +/- 2
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+3 +1 0
.
+7 +/- 2 +5 +/- 2 +4 +/- 2
-10 -15 -20
-6 +/- 2 -11 +/- 3 -16 +/- 5
2 9 9 4 2 8
[Unit: dBs]
1 5 0 5 8 2 9 9 4
[Unit: dBs]
8K
8kHz
m
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[Unit: dBs]
-1
+3 +/- 2
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EMX3000
9 9
2 8 9 9
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