Sony WM-FX671 Service Manual page 18

IC301 TA2123AF (EL)
36 35 34
BST
AGC
–
DET
+
C-AMP SW 37
MT TC
38
BEEP 39
BEEP
AMS OUT 40
MT SW 41
PW SW 42
SWITCH
BST SW 43
F/R SW 44
PRE SW 45
PRE A
M/N SW 46
PRE GND 47
VREF IN 48
VREF
1
2 3 4
IC601 MM1279XVBE
14 13 12
BIAS
CIRCUIT
1 2 3
33 32 31 30 29 28 27 26
PW C
PRE B
MTL DRV
5 6 7 8 9
11 10 9
G2 G1
+
–
SUM
WEIGHT
GM
A-CH BLOCK
B-CH BLOCK: SAME AS A-CH.
4 5 6
25
RF IN
24
PW GND
23
–
OUT B
22
+
PW B
21 OUT C
PW A
+
20 OUT A
–
19 VCC
RIPPLE
BASE
18
FILTER
17 RF OUT
16 GND
15 AMS DET
COMPARATOR
14 AMS MIX
13 AMS SW
MIX
10 11 12
8
V/I
7
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