Sony SA-WCT370 Service Manual ▷ View online
SA-WCT370
SA-WCT370
17
17
4-3. PRINTED WIRING BOARD - SUB MAIN Board (Side B) -
•
: Uses unleaded solder.
CL141
CL144
CL148
CL177
CL178
CL179
CL180
CL181
CL182
CL183
CL184
CL185
CL186
CL187
CL188
CL189
CL190
CL191
CL192
JL104
JL105
JL106
JL107
JL113
JL114
JL115
JL116
JL117
JL118
JL122
JL123
JL124
JL125
JL126
JL127
JL128
JL129
JL131
JL132
JL135
JL137
JL139
JL144
JL148 JL150
JL152
JL153
JL157
JL158
JL159
JL160
JL161
JL162
JL163
JL164
JL165
JL166
JL167
JL168
JL169
JL170
SUB MAIN BOARD
(SIDE B)
1-889-802-
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
10
11
11, 12
(11, 12)
Ver. 1.1
SA-WCT370
SA-WCT370
18
18
4-4. SCHEMATIC DIAGRAM - SUB MAIN Board (1/2) -
• See page 15 for Waveforms. • See page 23 for IC Block Diagrams. • See page 26 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 22)
(Page 19)
(Page 22)
SA-WCT370
SA-WCT370
19
19
Note: When the IC104 on the SUB MAIN board is replaced, refer to “NOTE OF REPLACING THE
IC104 ON THE SUB MAIN BOARD AND THE COMPLETE SUB MAIN BOARD” on page 4.
4-5. SCHEMATIC DIAGRAM - SUB MAIN Board (2/2) -
• See page 15 for Waveforms. • See page 23 for IC Block Diagrams.
5
2.9
3.3
4.1
1.7
3.3
3.3
0
3.3
1.6
1.6
1.6
1.6
3.3
1.6
3.3
1.6
1.6
1.6
3.3
1.6
3.3
11.9
27.3
32
32
16
16
32
27.3
27.3
27.3
32
11.9
32
32
16
16
0.6
0
15.8
0
3.4
3.3
3.3
1.6
1.6
3.3
1.6
1.6
1.7
1.5
3.3
0
1.6
1.6
3.5
3.2
0.9
11.9
32
32
3.5
3.3
1.6
11.9
1.6
3.5
3.2
3.2
1.1
1.6
1.6
1.6
2.9
11.9
11.9
3.5
0
0
15.9
2.5
3.5
0
15.9
2.9
15.8
3.2
0
1.8
3.3
1.7
3.2
0
3.2
0
0
3.5
3.2
1.6
3.3
1.6
1.6
3.3
3.3
2
4
3
6
C196
0.001
0.01
C166
0.1
C133
0.1
C130
0.1
C126
0.1
C127
0.1
C134
0.1
C137
0.1
C148
0.1
C129
7p
C185
C184
7p
C174
2.2
C140
2.2
C152
2.2
2.2
C165
2.2
C177
0.1
C125
0.01
C122
C05
0.1
1
C158
10
C155
10
C167
1
C179
C120
22p
0.1
C198
C118
0.1
C191
0.001
0.1
C209
0.1
C197
1
C162
C172
2.2
C194
0.1
6.3V
1000
C203
C170
1000
6.3V
50V
47
C195
16V
100
C175
16V
100
C178
16V
C141
100
16V
47
C119
16V
100
C199
CL150
CL151
CL158
CL152
CL155
CL145
CL149
CL148
CL153
CL161
CL162
CL160
CL159
CL147
CL141
CL143
CL156
CL142
CL144
CL157
CL154
CL146
4P
CN109
SW(–)
1
SW(–)
2
3
SW(+)
4
SW(+)
8P
CN114
32V
1
2
32V
32V
3
GND
4
GND
5
GND
6
MAIN-ON
7
E4V
8
CRH02(T5R,SONY
,XM)
D
111
E
ET100
TC7SHU04FU
IC107
1
NC
2
3
GND
4
5
VCC
4
3
1
2
MM3411A18URE
IC106
CE
VSS
VOUT
VIN
14
13
12
11
10
9
8
7
6
5
4
3
2
1
TC74LCX74FT(EKJ)
IC103
1/CLR
1D
1CLK
1/PRE
1Q
1/Q
GND
2/Q
2Q
2/PRE
2CLK
2D
2/CLR
VCC
44
38
39
40
41
42
43
7
6
5
4
3
2
1
37
36
35
34
33
32
8
9
10
11
28
29
30
31
17
16
15
14
13
12
27
26
25
24
23
22
21
20
19
18
CXD9981TN
IC104
GVDD_B
/DTW
NC
NC
/SD
PWM_A
/RESET_AB
PWM_B
OC_ADJ
GND
AGND
VREG
M3
M2
M1
PWM_C
/RESET_CD
PWM_D
NC
NC
VDD
GVDD_C
GVDD_D
BST_D
NC
PVDD_D
PVDD_D
OUT_D
GND_D
GND_C
OUT_C
PVDD_C
BST_C
BST_B
PVDD_B
OUT_B
GND_B
GND_A
OUT_A
PVDD_A
PVDD_A
NC
BST_A
GVDD_A
1
2
3
4
5
6
7
8
9
10
11
12
13 14 15 16 17 18 19 20 21 22 23 24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
CXD9843AR
IC105
XVSS
VSUBC
VSSR
OUTR2
VDDR
OUTR1
VSSR
VSSL
OUTL2
VDDL
OUTL1
VSSL
XOVSS
XFSOOUT
XOVDD
DVDD
DVSS
NSPMUTE
SOFTMUTE
PGMUTE
SCDT
SCSHIFT
SCLA
TCH
FLAGR
FLAGL
SFLAG
INIT
MCKSEL
LRCK
BCK
DATA
BFVDD
BFVSS
TEST
DVDD
XFSIIN
FSOCKO
FSOI
HPOUTR2
HPVSSR
HPOUTR1
HPVDDR
HPOUTL2
HPVSSL
HPOUTL1
HPVDDL
XVDD
XFSOIN
1
2
3
4
5
SI-3010KM-TLA
IC109
VCONT
VIN
GND
VOUT
SENSE
JL141
JL152
JL153
JL138
JL136
JL139
JL134
JL157
JL131
JL144
JL145
JL137
JL135
JL143
JL146
JL133
JL132
JL127
10uH
L002
10uH
L001
HN1A01FU
Q106
1
2
3
4
5
6
HN1C01FU
Q104
1
2
3
4
5
6
2SB1690KT146
Q110
LSCR523UBFS8TL
Q105
LTC014EUBFS8TL
Q112
LTC014EUBFS8TL
Q108
100
RB003
R222
100
100
R193
100
R196
100
R198
33k
R186
1.5k
R184
47k
R172
R178
220
R183
220
R176
220
R173
100
10k
R171
22
R217
100
R185
100
R188
100
R191
10k
R232
0
R194
0
R192
22k
R205
R208
0
R202
100k
0
R200
R203
100k
10k
R167
R233
10k
390
R221
R236
470
R235
470
R181
100
10k
R165
R209
0
100k
R199
4.7k
R187
1k
R243
1k
R242
22k
R175
0
R230
1k
R224
10k
R223
100
R177
10k
R225
0
R197
0
R195
150
R206
100k
R190
R216
0
1M
R219
R179
220
SL122
SL100
MM3411A33URE
IC108
CE
1
GND
2
VOUT
3
VDD
4
49.152MHz
X101
FB101
0.68uH
CL177
CL178
CL179
CL180
CL181
0.001
C210
0.001
C211
0.1
C131
0.1
C132
0.1
C189
0.1
C188
0.1
C187
100k
R231
DZ2J056M0L
D112
35V
470
C204
35V
470
C205
35V
470
C207
35V
470
C206
0.1
C186
0.1
C161
0.1
C157
0.1
C135
R234
47k
C136
2.2
LRCK
BCK
DATA
256FS
STREAM PROCESSOR
IC105
2
1
3
5
4
6
7
8
9
PRESCALER
IC103
10
12
13
15
14
16
17
11
+1.8V REGULATOR
IC106
+3.3V REGULATOR
IC108
CLOCK BUFFER
IC107
DIGITAL POWER AMP
IC104
+12V REGULATOR
IC109
(1/2)
SUB MAIN
>001S
BOARD
POWER
>03S
CN901
BOARD
(2/2)
SUB MAIN BOARD
(CHASSIS)
POWER DETECT
Q110, 112
B+ SWITCH
POWER DETECT
DC DETECT
BUFFER
SP1
(SUBWOOFER)
10
11
12
13
14
15
G
16
H
17
I
18
F
1
C
J
D
6
E
K
2
B
3
A
4
5
7
8
9
(Page 21)
(Page 18)
SA-WCT370
SA-WCT370
20
20
4-6. PRINTED WIRING BOARD - POWER Board -
•
: Uses unleaded solder.
4
3
3
1
2
2
4
3
3
1
2
E
E
E
E
E
IC940
IC950
CL900
CL901
CL902
CL903
CL904
CL905
CL909
CL910
CL911
CL912
CL913
CL914
CL915
CL916
CL917
CL918
CL920
CL921
CL922
CL923
CL924
CL925
CL926
CL927
CL928
CL929
CL930
CL940
CL941
CL942
CL943
CL950
CL951
CL952
CL953
CL960
CL962
CL963
CL964
Q921
Q922
Q923
CAM901
PATTERN
SPARK-GAP
Q960
Q961
R901
Q962
R902
R903
R904
R905
R910
R914
R915
R916
R920
R925
R927
R928
R929
R930
R931
R932
R940
R941
R942
R943
R944
R945
R946
R947
R949
R950
R951
C916
R953
R955
R956
R957
JL900
JL901
R959
JL902
JL903
JL904
JL905
JL906
JL908
R960
TH920
JL909
R961
C925
R962
R963
C928
C929
JL911
JL912
JL913
JL914
C930
JL915
C931
C932
JL917
JL919
C943
C944
C946
C947
C952
C953
C954
C960
D902
D912
D913
D914
D915
D916
D922
D923
D925
D926
D927
D928
D929
D930
D931
D932
+
-
1
1
3
1
3
4
2
3
1
4
5
8
3
4
6
7
5
E
10
6
5
1
2
4
7
8
14
1
1
2
4
3
1
2
4
3
1
2
4
3
E
E
9
1
D940
IC920
D950
JS901
JS902
JS903
JS904
JS905
LF001
LINE FILTER
F900
Q901
Q920
PC901
PC902
PC903
EB901
EB902
VDR900
R900
R911
R913
CN900
CN901
R921
R922
R923
FR910
R924
R926
FH900
FH901
C903 (US, CND)
C904 (Except US, CND)
C904 (Except US, CND)
TH900
A001
A002
C907
C911
C914
C917
C919
C924
C927
C940
C941
C951
JW902
JW903
JW904
JW905
JW907
JW908
JW909
D900
D901
JW910
JW913
JW914
JW915
JW917
JW918
D910
D911
JW920
D920
D924
T901
SUB MAIN
TRANSFORMER
T902
MAIN POWER
TRANSFORMER
IC910
C905 (US, CND)
C906 (Except US, CND)
C906 (Except US, CND)
C900 (US, CND)
C902 (Except US, CND)
C902 (Except US, CND)
C922 (Except US, CND)
C923 (US, CND)
C901 (Except US, CND)
C937 (US, CND)
C937 (US, CND)
C920 (US, CND)
C921 (Except US, CND)
C921 (Except US, CND)
C935 (US, CND)
C936 (Except US, CND)
C936 (Except US, CND)
(Except US, CND)
(US, CND)
POWER BOARD
1-889-805-
11
(11)
(CHASSIS)
A
K
K
A
(CHASSIS)
A
A
A
A
A
A
A
A
K
K
K
K
K
K
K
K
K
A
SUB MAIN
BOARD
CN114
>03P
AC1
(AC IN)
A
K
A
K
K
A
A
A
K
K
K
A
A
A
K
K
A
K
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
10
11
(Page 16)
Ver. 1.2
Click on the first or last page to see other SA-WCT370 service manuals if exist.