Read Sony SA-WCT770 Service Manual online
SA-WCT770
SA-WCT770
20
20
4-4. SCHEMATIC DIAGRAM - SUB MAIN Board (1/2) -
• See page 17 for Waveforms. • See page 25 for IC Block Diagrams. • See page 28 for IC Pin Function Description.
1
3.5
0
3.5
3.5
3.5
3.5
3.2
3.5
2
3.5
4.1
0
4.1
4.1
0.1
0.6
3.4
0.1
0
3.5
3.2
0
3.5
3.4
3.5
0
0
0
4.1
4.1
0
0
4
4.1
0
0
3.5
3.2
3.5
3.5
1.8
3.5
3.5
3.5
3.5
1.8
3.3
0
3.5
2.9
3.2
3.4
3.5
3.5
3.5
0.3
3.4
4.1
C102
0.1
C112
0.1
0.1
C103
0.1
C109
0.1
C107
0.022
C114
0.01
C108
0.22
C106
0.1
C104
0.1
C101
0.01
C105
0.1
C110
0.1
C116
16V
100
C115
C201
100
CL1
12
CL128
CL1
17
CL140
CL125
CL166
CL1
19
CL1
15
CL109
CL106
CL100
CL105
CL102
CL104
CL103
CL107
CL122
CL121
CL126
CL101
CL164
CL163
C
L111
CL1
14
CL108
CL139
CL138
CL137
CL136
CL176
CL135
CL170
CL175
CL132
CL174
CL131
CL171
CL130
CL113
CL129
CL173
CL1
16
CL134
CL133
CL172
CL120
CL1
10
CL127
CL168
CL165
CL169
3P
CN111
1
LED(R)
2
LED(G)
3
GND
3P
CN113
1
GND
2
KEY_PAIR
3
KEY_POWER
9P
CN102
D-GND
1
TXD1
2
RTS1
3
3.3V
4
CLK1
5
RXD1
6
CNVSS
7
RESET
8
D-GND
9
CN107
+4V
1
+4V
2
DOUT_RX
3
Link State
4
INT
5
RESETN
6
SCL_STX
7
SDA_STX
8
SCL_MRX
9
SDA_MRX
10
GPIO3
11
GND
12
POWER
13
LRCK1_TX
14
GPIO2
15
MCK_OUT_RX
16
DIN_TX
17
GPIO
18
GPIO
19
NC
20
NC
21
BCK0_RX
22
WCK0_RX
23
GND
24
DA2J10100L
D101
FB102
FB100
PST8435UL
IC101
1
GND
2
VDD
3
CD
4
OUT
R5F212BASNFP
IC100
1
NO USE
2
S-AIR_DA
TA
3
FW_MODE
4
NO USE
5
NO USE
6
RESET
7
Xout
8
Vss
9
Xin
10
Vcc1
11
NO USE
12
P_CONT2
13
P_CONT1(3.3V)
14
P_CONT_PVDD
15
NO USE
16
NO USE
17
NO USE
18
NO USE
19
NO USE
20
NO USE
21
LED_GREEN
22
LED_RED
23
PAIRING_LED
24
NO USE
25
DAMP_SHIFT
26
NO USE
27
DAMP_SCDT
28
DRIVE_RST(EN)
29
DAMP_INIT
30
DAMP_OVF
31
DAMP_LATCH
32
DAMP_SOFT_MUTE
33
DAMP_OVF2
34
DAMP_LA
TCH2
35
NO USE
36
AC_CUT
37
FW_TxD
38
FW_RxD
39
NO USE
40
NO USE
41
NO USE
42
PVDD_SD_EN
43
DC_DET
44
NO USE
45
DRIVE_SD
46
S-AIR FREQ DET
47
S-AIR DET
48
S-AIR_GPIO2
49
KEY_POWER
50
S-AIR_RESET
51
KEY_PAIRING
52
SUR_MODE_SW
53 SHIMUKE
54 MODEL
55 FAN_ON
56 FAN_DET
57 S-AIR_RF_FB
58 NO USE
59 Vss
60 NO USE
61 Vref
62 Vcc1
63 NO USE
64 S-AIR_CLK
JL167
JL129
JL161
JL117
JL168
JL158
JL130
JL163
JL160
JL114
JL150
JL115
JL106
JL107
JL159
JL104
JL105
JL148
JL123
JL128
JL124
JL125
JL126
JL113
JL164
JL118
JL170
JL169
JL162
JL166
JL116
JL122
JL165
HN1C01FU
Q103
1
2
3
4
5
6
Q109
1
2
3
4
5
6
RN2902
Q111
1
2
3
4
5
6
S
Q114
LSCR523UBFS8TL
Q102
Q113
100
RB002
100k
R115
R125
100
R149
100
R160
220
100k
R249
1k
R105
R124
15k
R174
220k
R180
2.2k
1k
R164
10k
R121
R154 100
47k
R112
47k
R118
47k
R127
10k
R109
R158
100
100
R135
4.7k
R128
R155
10k
R159
330
R182
100k
4.7k
R148
4.7k
R110
0
R120
R108
10k
10k
R104
100k
R117
100k
R114
1k
R103
10k
R113
100
R131
R161
0
R152
100
R153 100
R156
100k
R119
10k
R130
10k
4.7k
R111
4.7k
R126
SL102
SL101
20MHz
X100
CL182
CL183
CL184
CL185
CL186
CL187
CL188
CL189
CL190
CL191
CL192
C113
0.1
FB105
FB103
FB104
GPI02
RXD1
CNVSS
RXD1
RESN
LRCK
BCK
TXD1
PD-OUT
SCL
TXD1
DETECT
CNVSS
RESET
RESET
SDA
DATA
RESN
GPI02
SCL
256FS
SDA
DETECT
SYSTEM CONTROLLER
IC100
1
2
3
4
5
6
7
8
9
11
10
12
13
14
15
16
17
VOLTAGE DETECT
IC101
RN1902
(1/2)
SUB MAIN BOARD
SUB LED
>02S
CN901
BOARD
(2/2)
SUB MAIN
>001S
BOARD
SUB KEY
>01S
CN002
BOARD
SHUT DOWN
SWITCH
24P
10V
RESET SWITCH
SSM3J325F, LSOYF
LTC014EUBFS8TL
Q113, 114
B+ SWITCH
LED DRIVE
LED DRIVE
(NC)
(SWA12-4V RX)
RF1
RF MODULATOR
FFC1
10
11
12
13
14
15
G
16
H
I
F
1
C
J
D
6
E
2
B
3
A
4
5
7
8
9
(Page 24)
(Page 21)
(Page 24)
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