Sony WM-EX900 Service Manual page 16

IC601 LB1994M
UT 28
VT 29
WT 30
W OUT 31
V OUT 32
NC 33
U OUT 34
US 35
VS 36
IC702 MM1305
OUT 1
1
OUT 2
2
OUT 3 3
OUT 4
4
27 26 25 24
CURRENT
AMP
SOFT CLIP
DECODER
1 2 3 4 5 6
WS MC
23 22
VI
P-SIG
COMPARATOR
PW•SW
CTRL
BLOCK
7 8 9
IC704 S-80808ANNP-E7Y
VSS
4
8 VCC
7 CE
1
OUT
6 RIPPLE
5 GND
– 20 –
21 20
BUFFER COMPARATOR
BUFFER
D/DT PULSE
POWER
NC
3
Vref
–
+
2
VDD
19
M CENTER
18
GND
17 VI2
16
VI1
15 IV
VC
14
13 PW
12 CI
11 Vref
10 P SIG