Yamaha KMA-1000 Service Manual page 45

A B C
FUNCTION 2/3
1
2
3
MIC AMP
MIC IN
Page 48 D2
to OPERATION (4)_CB901
0
0
0 IC300
W303
4
0
0
IC300
0
5
IC301
6
7
FUNCTION (2)
8
9
IC300, 301, 303, 305, 307:
UPC4570G2-E1-A
Dual operational amplifier
10
OUT +V
1 1 8 CC
–IN 1 OUT 2
2 7
+ – + –
+IN -IN
1 3 6 2
–V 4 5 +IN
CC 2
D E F
KMA-950
MIC MIX AMP
ECHO MIX AMP
MIC VOL
MIC 1
0
0
IC301
0
W302
MIC VOL
MIC 2
Page 44 H3
to FUNCTION (1)_CB3
MUSIC BALANCE
MIC ECHO
DELAY
MIC ECHO
REPEAT
G H I
MUSIC IN
MUSIC TONE
MUSIC TONE CONTROL
BASS
MUSIC TONE
TREBLE
0
0
IC303
0
0
0
IC303
0
MIC TONE MIC TONE CONTROL
BASS
MIC TONE
TREBLE
MIC TONE
MID
J K
MIC ECHO MIC MIX
Page 44
to FUNCTION (1)_CB2
MUSIC OUT
CB304
MIC OUT
0
0
IC305
0
0
0
IC305
0
0
0
IC307
0
0
0
IC307
0
L M N
KMA-1000/KMA-950
A2
* All voltages are measured with a 10MΩ/V DC electronic volt meter.
* Components having special characteristics are marked Z and must be replaced
with parts having specifications equal to those originally installed.
* Schematic diagram is subject to change without notice.
45