Sony Walkman WM-EX2000, Service Manual

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IC601 LB1994M
DECODER
CTRL
BLOCK
POWER
D/DT PULSE
BUFFER
COMPARATOR BUFFER VI
COMPARATOR
SOFT CLIP
CURRENT
AMP
P-SIG
PW•SW
4 5 6 1 2 9 7 8
14
15
16
17
18
19
20 21 22 24 23 25 26 27
30
29
28
36
35
34
33
32
31
WS MC
U IN
3
VCC V IN
W IN
CTRL1 CTRL2
DIR
VS
US
U OUT
NC
V OUT
W OUT
WT
VT
UT
PGND FC CT2 CT1 IR ICI2 ICI1 I SOFT
M CENTER
GND
VI2
VI1
IV
VC
13 PW
12 CI
11 Vref
10 P SIG
IC703 MM1305BWBE
+
–
+
–
+
–
+
–
1
2
3
4
8
7
6
5
VCC
CE
RIPPLE
GND
OUT 1
OUT 2
OUT 3
OUT 4