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Yamaha Manuals
Amplifier
KMA-1000
Service manual
Yamaha KMA-1000 Service Manual page 20
Digital karaoke mixing amplifier
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A
B
KMA-1000/KMA-950
FUNCTION (1)
(Side A)
1
PRE OUT
(L/R)
●
Semiconductor Location
Ref. No. Location
SUB WOOFER
D8
D5
1/2 (WITH LPF)
D12
D5
D15
F4
2
D16
G4
D17
E4
D18
E4
D801
D5
D802
D5
BGM
(INPUT LEVEL)
D803
D4
D804
D4
D805
F5
D806
F5
D807
C3
BGM
IC1
C5
(INPUT L/R)
IC2
C4
IC3
C2
IC4
C4
TAPE OUT
IC5
D5
(L/R)
IC6
D5
3
IC7
D5
IC8
E4
IC9
E4
TAPE IN
IC10
D4
(L/R)
IC11
D4
IC14
C2
IC15
F5
IC16
G4
TAPE
IC17
E4
(INPUT LEVEL)
IC18
D4
IC616
C2
IC617
C3
IC618
C1
Q3
C4
Q4
C3
Q5
C4
AUX
4
Q6
C3
(INPUT LEVEL)
Q10
C1
Q12
C3
Q13
C3
Q14
C2
AUX IN
Q15
C2
(L/R)
Q16
C2
Q17
C2
Q18
C2
Q19
C2
DVD IN
Q21
C3
(L/R)
Q22
C3
Q30
C1
Q31
C1
DVD
5
(INPUT LEVEL)
6
20
C
D
KMA-1000
R
MAIN (1)
(CB401)
GND
L
1
4
8
5
IC618
1
4
IC14
8
5
5
8
IC3
4
1
9
16
IC616
8
1
9
16
IC617
8
1
RM_IN
TXD_PC
/G_V
RCK
+5VD
-12VA
RM2
RM1
5
8
4
IC4
1
4
1
IC18
5
8
8
5
IC2
4
1
1
4
IC10
8
5
5
8
IC11
4
1
5
8
IC7
4
1
5
8
IC1
4
1
1
15
5
8
IC5
IC6
4
1
16
30
FUNCTION (2)
(W302)
E
F
DGND
+5VD
VOL_REPEAT
VOL_DELAY
VOL_BAL
MIC2_OUT
-12VA
MIC1_OUT
AG
MUS_ROUT
+12VA
MUS_LOUT
AG
KEYCON_R_OUT
AG
KEYCON_L_OUT
AG
MIC_ECHO_R
AG
MIC_ECHO_L
AG
MIC_MIX_A
GND_RM
RM2
GND_RM
RM1
DGND
RM_DIR
VIDEO_DET
SDATA
OPERATION (1)
SCLK
(CB237)
+5VA
GND_RM
+12VA
MAIN (1)
(CB402)
(Writing port)
CB17
W2
10
11
20
1
IC17
48
10
11
20
1
33
CB19
FUNCTION (3)
(CB602)
G
Point q Pin 7 of IC15
FUNCTION (2)
(CB304)
MAIN (2)
(W552)
CB22
1
1
4
IC16
8
5
49
64
1
16
32
17
CB15
OPERATION (2)
(CB706)
CB12
FUNCTION (3)
(CB601)
H
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Kma-950
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