Inspections (検査 - Yamaha MSP Series Service Manual

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I
INSPECTIONS (検査)
Measuring Voltage
Load
LEVEL VR
Tone-control SW
1. Electric performance (電気性能)
ITEM
No.
(項目)
Output Power
1
(定格出力)
GAIN
2
(利得)
Frequency Response
3
(周波数特性)
Tone-control
4
Characteristic
(トーンコントロール特性)
Noise Level
5
Residual Noise
(残留雑音)
MAX. Noise
6
DC Voltage
7
(NOTE): 0 dBu = 0.775 V
[測定電圧]
[負荷]
[レベル VR]
[トーンコントロール SW]
INPUT CONDITIONS
(入力条件)
INPUT1 400 Hz
INPUT1 10 KHz
INPUT1 -6 dBu 400 Hz
VR: MAX
INPUT1 +4 dBu 400 Hz
VR: CENTER
INPUT2 -20 dBu 400 Hz
VR: MAX
INPUT2 -10 dBu 400 Hz
VR: CENTER
INPUT1
HIGH SW: 0
LOW SW: 0
LOW = -3
REF: 60 Hz
LOW = -1.5
REF: 60 Hz
LOW = +1.5
REF: 60 Hz
HIGH = -1.5
REF: 15 KHz
HIGH = +1.5
REF: 15 KHz
LEVEL VR = MIN.
HIGH SW: 0
LOW SW: 0
LEVEL VR = MAX.
HIGH SW: 0
LOW SW: 0
No Signal
AC100 V, 50/60 Hz (J)
AC120 V, 60 Hz (U, C, T)
AC240 V, 50 Hz (A)
AC230 V, 50 Hz (B)
AC230 V, 50 Hz (H)
AC220 V, 60 Hz (K)
AC230 V, 50 Hz (O)
LF 4 Ω
HF 6 Ω
MAX.
HIGH SW, LOW SW: 0 position.
OUTPUT CONDITIONS
(出力条件)
LF: 24.2 dBu OUTPUT
HF: 24.2 dBu OUTPUT
LF SP-OUT
REF: LF OUTPUT
20 Hz
1 KHz 1 W (WF)
REF: LF OUTPUT
60 Hz
1 KHz 1 W (WF)
REF: LF OUTPUT
400 Hz
1 KHz 1 W (WF)
REF: LF OUTPUT
2 KHz
1 KHz 1 W (WF)
REF: LF OUTPUT
4 KHz
1 KHz 1 W (WF)
REF: LF OUTPUT
20 KHz
1 KHz 1 W (WF)
REF: LF OUTPUT
LOW SW: 0
REF: HF OUTPUT
HIGH SW: 0
LF SP-OUT
DIN AUDIO Filter
HF SP-OUT
DIN AUDIO Filter
LF SP-OUT
DIN AUDIO Filter
HF SP-OUT
LF-SP OUT
MSP5 STUDIO
LIMIT
(限界値)
< 0.02 %
< 0.02 %
24.2 dBu ± 2 dB
24.2 dBu ± 2 dB
24.2 dBu ± 2 dB
24.2 dBu ± 2 dB
-15 ± 2 dB
LF SP-OUT
-6 ± 1 dB
LF SP-OUT
+1 ± 0.7 dB
LF SP-OUT
0 ± 0.5 dB
LF SP-OUT
-19 ± 3 dB
HF SP-OUT
-14.5 ± 2 dB
LF SP-OUT
-3.7 ± 1.2 dB
HF SP-OUT
+1.5 ± 1 dB
HF SP-OUT
-3 ± 1.5 dB
-1.5 ± 1 dB
+1.5 ± 1 dB
-1.5 ± 1 dB
+1.5 ± 1 dB
< -70 dBu
< -70 dBu
< -60 dBu
< ± 50 mV
13

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