Sony SAVA-29 Service Manual page 19

µPC1237HA (PS BOARD)
IC701
OVER LOAD DET
OFFSET DET
LATCH/
AUTORESET
1 2
IC201, 251 LC75373ED (MAIN BOARD)
33 32
+
+
–
–
LSELO 34
35
L4
L3 36
L2 37
+
L1
38 –
VDD 39
–
R1
40
+
R2 41
R3 42
R4 43
RSELO 44
–
–
+
+
1 2
IC304
VSS 1
OUT 2
L-CH IN 3
A-GND 4
NC 5
CS1 6
GND 7
CK 8
F/F
AC OFF
DET
3 4 5
31 30 29 28 27 26
–
+
–
+
–
+
DECODER
+
–
+
–
+
–
3 4 5 6 7 8
TC9210P (MAIN BOARD)
L-CH R-CH
DATA DATA
LATCH LATCH
CIRCUIT CIRCUIT
SHIFT RESISTER
LEVEL
(13bit)
SHIFT
CIRCUIT
STROBE OSC
CIRCUIT
— 31 —
V ON
CC
MUTE
V
CC
6 7 8
25 24 23
+
–
+
–
SHIFT
LATCH CONTROL
REGISTER
–
+
–
+
9 10 11
16 VDD
15 OUT
14 IN R-CH
13 A-GND
12 NC
11 CS2
LEVEL
SHIFT 10 STB
CIRCUIT
9 DATA
22 LFIN
21 LFOUT
20 LROUT
19 VREF
18 CE
17
DI
16 CL
15
VSS
14 RROUT
13 RFOUT
12 RFIN