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Model
SA-WCT260
Pages
32
Size
2.55 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
sa-wct260.pdf
Date
PREV: Sony STR-DA1800ES Service Manual

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SA-WCT260
SA-WCT260
13
13
SECTION  3
DIAGRAMS
3-1.  BLOCK  DIAGRAM
X101
49.152MHz
CLOCK
BUFFER
IC107
OVER LOAD
DETECT
Q106
L.P.F.
L.P.F.
POWER AMP
IC104
DC DETECT
Q105
PWM_B
6 PWM_A
8
PWM_D
16 PWM_C
18
: AUDIO (ANALOG)
: AUDIO (DIGITAL)
STREAM PROCESSOR
IC105
31 DATA
30 BCK
29 LRCK
21 SCDT
22 SCSHIFT
23 SCLATCH
27 INIT
FLAGL
19 SOFTMUTE
SL+OUTL1 11
SL-OUTL2 9
SR+OUTR1 6
SR-OUTR2 4
XFSOIN 48
24 FLAGR
25
OUT_D
OUT_C 31
36
/SD
5
/RESET_AB
7
/RESET_CD
17
36 XFSIIN
14 XFSOOUT
PRESCALER
IC103
S101
I/1
POWER
DETECT
Q104
D111
P_CONT1 (3.3V) 13
SYSTEM CONTROLLER
IC100
CN101
SDIO_Z
28
I2CSDA
21
I2CCLK
22
INT
18
RESET
23
+3.3V
BCK_Z
29
LRCK_Z
30
+3.3V
14
+3.3V
+3.3V
13
256FS
17
S-AIR_DATA
2
S-AIR_CLK
64
S-AIR_GPIO2
48
S-AIR_RESET
50
DRIVE_RST(EN) 28
DRIVE_SD 45
DAMP_SCDT 27
DAMP_SHIFT 25
DAMP_LATCH 31
DAMP_INIT 29
DAMP_OVF 30
DAMP_SOFT_MUTE 32
DC_DET 43
PVDD_SD_EN 42
P_CONT_PVDD 14
KEY_POWER
49
KEY_PAIRING
51
9
7
X100
20MHz
Xin
Xout
EZW-RT50/EZW-RT20
WIRELESS
TRANSCEIVER
(EZW-RT50)
22 LED_RED
21 LED_GREEN
LED DRIVE
Q109, 111
S100
SECURE LINK
SHUNT
REGULATOR
IC950
AC1
(AC IN)
F900
TH900
D911
RECT
D900
LINE FILTER
LF900
LF901
(US, CND, BR)
POWER CONTROL
IC910
T901
SUB POWER
TRANSFORMER
DRAIN
8
DRAIN
7
ISOLATOR
PC901
ISOLATOR
PC902
VCC
2
FB
4
1
POWER CONTROL
IC920
D
T902
MAIN POWER
TRANSFORMER
D924
D928
D925, 926
OVER LOAD
PROTECT
Q921, 922
4 VCC
7 OCP/BD
5 OLP/SS
TH920
RECT
D940
D902
6 FB
REGULATOR
Q923
D950
POWER ON/OFF
CONTROL
Q960
ISOLATOR
PC903
POWER VOLTAGE
CONTROL
Q961, 962
+3.3V
REGULATOR
IC108
+3.3V_AMP
+3.3V_AIR
+1.8V
REGULATOR
IC106
+1.8V
RESET SWITCH
Q102
RESET 6
AC_CUT 36
E3.3V
RESET SIGNAL
GENERATOR
IC101
P_CONT2 12
+12V
REGULATOR
IC109
+12V
32V
D112
D901
D929 D930 D931
SHUNT
REGULATOR
IC940
RESERVED
1
DETECT
2
PD-OUT_Ajroha
19
S-AIR FREQ DET
46
S-AIR DET
47
S-AIR_RF_FB
57
POWER
DETECT
Q108
SHUT DOWN
SWITCH
Q103
REGULATOR
Q920
B+ SWITCH
Q901
B+ SWITCH
Q110, 112
Abbreviation
SIGNAL PATH
: Brazilian model
BR
: Canadian model
CND
SP100
D901
I/1
EXCEPT
US, CND, BR
Ver. 1.1
SA-WCT260
SA-WCT260
14
14
For Schematic Diagrams.
Note:
•  All capacitors are in μF unless otherwise noted. (p: pF) 50 
WV or less are not indicated except for electrolytics and 
tantalums.
•  All resistors are in Ω and 1/4 W or less unless otherwise 
specifi ed.
•      f  : Internal component.
•  2 : Nonfl ammable resistor.
•  5 : Fusible resistor.
•  C : Panel designation.
THIS  NOTE  IS  COMMON  FOR  PRINTED  WIRING  BOARDS  AND  SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
•  A : B+ Line.
•  Voltages and waveforms are dc with respect to ground 
under no-signal (detuned) conditions.
  no mark : POWER ON
•  Voltages are taken with VOM (Input impedance 10 M
).
  Voltage variations may be noted due to normal production 
tolerances.
•  Waveforms are taken with a oscilloscope.
  Voltage variations may be noted due to normal production 
tolerances.
•  Circled numbers refer to waveforms.
• Signal path.
  F : 
AUDIO 
(ANALOG)
  J : 
AUDIO 
(DIGITAL)
• Abbreviation
  BR 
: Brazilian model
  CND  : Canadian model
For Printed Wiring Boards.
Note:
•  X : Parts extracted from the component side.
•  Y : Parts extracted from the conductor side.
•      f  : Internal component.
• 
 : Pattern from the side which enables seeing.
  (The other layers’ patterns are not indicated.)
Note: 
The components identi-
fi
 ed by mark 0 or dotted 
line with mark 0 are criti-
cal for safety. 
Replace only with part 
number specifi ed.
Note: 
Les composants identifi és 
par une marque 0 sont 
critiques pour la sécurité. 
Ne les remplacer que par 
une pièce portant le nu-
méro spécifi é.
Caution:
Pattern face side:
(Conductor Side)
Parts face side: 
(Component Side)
Parts on the pattern face side seen 
from the pattern face are indicated.
Parts on the parts face side seen from 
the parts face are indicated.
• Abbreviation
  BR 
: Brazilian model
  CND  : Canadian model
Note: When the complete SUB MAIN board is replaced, re-
fer to “NOTE OF REPLACING THE IC104 ON THE 
SUB MAIN BOARD AND THE COMPLETE SUB 
MAIN BOARD” on page 3.
Note: When the complete SUB MAIN board is replaced, re-
fer to “NOTE OF REPLACING THE IC104 ON THE 
SUB MAIN BOARD AND THE COMPLETE SUB 
MAIN BOARD” on page 3.
•  Indication of transistor.
 
C
B
These are omitted. 
E
Q
 
C E
B
These are omitted. 
• Waveforms
– SUB MAIN Board –
1
IC100 
7 (Xout)
1 V/DIV, 20 ns/DIV
50 ns
1.8 Vp-p
3
IC105 
eh (XFSIIN)
1 V/DIV, 50 ns/DIV
82 ns
3.3 Vp-p
2
IC105 
qf (XFSOOUT)
500 mV/DIV, 10 ns/DIV
20.4 ns
1 Vp-p
4
IC105 
rk (XFSOIN)
500 mV/DIV, 10 ns/DIV
20.6 ns
0.8 Vp-p
5
IC107 
2 (A)
100 mV/DIV, 10 ns/DIV
20.6 ns
0.2 Vp-p
Caution:
Pattern face side: 
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen 
from the pattern face are indicated.
Parts on the parts face side seen from 
the parts face are indicated.
Ver. 1.1
SA-WCT260
SA-WCT260
15
15
4
5
3
2
1
16
16
16
16
0
0
12
27.3
32.3
32.3
16
16
32.3
27.3
27.3
32.3
16
16
32.3
32.3
27.3
12
12
12
1.6
3.3
1.6
3.3
3.3
1.1
1.6
3.3
1.6
3
12
3.3
3.3
0.9
0.9
0.9
3.3
1.8
32.3
32.3
12
1
1.7
3.3
3.3
1.6
1.6
3.3
1.6
1.6
3.3
3.3
2.7
0
3.3
1.8
1.6
3.3
3.3
3.3
3.3
1.6
3.3
1.6
1.6
3.3
1.6
3.3
1.8
3.3
4.2
2
2
3.3
1.6
1.7
3.3
3.3
0
0
3
3.3
3.3
3.3
3.3
3.3
1.6
3.3
3.3
3.3
1.6
1.6
0
3.1
0
0
2.5
3.3
3.3
1.6
3.3
3.3
1.6
3.3
1.8
3.3
0
3.3
0
0
3.3
3.3
3.3
3.3
3.3
0
3.3
3.3
2
0
3.3
3.3
3.3
3.3
0
0
0
3.3
4.2
2.1
3.3
3.3
0
3.3
4.2
2
0
4.2
0
4.2
0
0.6
0.1
0
0.6
0
0
3
3.3
4.2
0
3
1.6
JL136
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
10k
R167
10k
R104
FB100
2SB1690KT146
Q110
0.1
C116
4.7k
R111
JL126
CL173
0
R192
0
R195
1k
R224
JL141
CL153
0.1
C133
0.01
C108
JL123
CL130
CL143
CL155
10k
R223
CL120
JL107
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
SCLATCH
FLAGR
FLAGL
SFLAG
INIT
MCKSEL
LRCK
BCK
DA
TA
BFVDD
BFVSS
TEST
DVDD
XFSIIN
FSOCKO
FSOI
HPOUTR2
HPVSSR
HPOUTR1
HPVDDR
HPOUTL2
HPVSSL
HPOUTL1
HPVDDL
XVDD
XFSOIN
CL102
0.1
C197
CL124
CL154
10k
R109
2SC4154TP-1EF
Q102
1k
R164
CL122
JL120
JL144
CL156
RT3P11M-TP-1
Q111
JL117
CL174
4.7k
R126
100
R198
100
R185
0
R194
10
C167
R153 100
CL132
CL129
20MHz
X100
CL164
CL105
10k
R225
0.01
C166
CL150
CL136
CL152
C194
0.1
CL134
0.01
C122
0.1
C110
47k
R112
JL115
CL133
1k
R103
100
R196
CL100
R159
330
10
C155
JL113
CL1
17
RT3CLLM
Q103
R203
100k
100
R177
JL106
CL108
C120
22p
CL165
JL148
CL147
0
R230
0
R162
0
R120
15k
R124
0.01
C105
C196
1000p
CL1
14
JL112
CL157
RT3CLLM
Q104
R227
0
100
RB003
CL109
2SC4154TP-1EF
Q105
CL107
JL157
100
R193
1
2
3
4
5
6
7
8
9
9P
CN102
D-GND
TXD1
RTS1
3.3V
CLK1
RXD1
CNVSS
RESET
D-GND
220
R176
1
2
2P
CN105
SW(-)
SW(+)
CL1
19
100
R188
CL126
22
R217
CL116
49.152MHz
X101
1
2
CL125
R154 100
JL128
PST8435UL
IC101
1
GND
2
VDD
3
CD
4
OUT
CL151
IC108
S-1170B33UC-OTSTFG
1
EN
2
Vss
3
NC
4
VIN
5
VOUT
JL116
CL139
R182
100k
CL172
0
R200
CL137
R236
470
4.7k
R110
1M
R219
0.1
C125
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
C05
0.1
JL121
JL105
CL161
10k
R113
R174
220k
100
R191
R160
220
CL121
JL152
220
R178
JL114
0.1
C104
CL149
0.1
C129
JL143
220
R183
JL110
JL127
JL150
10k
R232
CL1
15
JL129
JL111
MM3404A18URE
IC106
1
CE
2
VSS
3
VOUT
4
VIN
C191
1000p
CL168
CL144
R108
10k
CL176
R226
0
0.22
C106
TC7SHU04FU
IC107
1
NC
A
2
3
GND
4
5
VCC
Y
MC2840-T112-1
D104
100k
R114
CL101
R235
470
JL156
R125
100
JL153
CL166
CL169
JL138
JL109
1
C158
JL147
R149
100
0.1
C148
0.1
C134
CL113
JL122
0.1
C103
10k
R165
CL104
0.1
C198
JL135
CL141
CL128
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
JL133
R202
100k
0.022
C114
CL171
CL145
JL108
1.5k
R184
R130
10k
JL104
C182
2200
35V
2
3
4
5
6
7
8
9
9P
CN104
NC
1
32V
32V
32V
GND
GND
GND
MAIN-ON
E4V
R158
100
CL170
JL130
CL160
R180
2.2k
JL119
4.7k
R128
DZ2J056M0L
D112
22k
R205
22k
R175
CL138
R222
100
0.1
C127
JL146
FB101
JL132
JL137
R233
10k
CL142
CL103
0.1
C118
0.1
C101
DA2J10100L
D101
1
2
3
4
5
SI-3010KM-TLS
IC109
VCONT
VIN
GND
VOUT
SENSE
CL175
JL151
JL131
R119
10k
JL3000
1k
R105
100k
R190
JL125
CL1
10
0.1
C109
47k
R127
R208
0
CL159
0.1
C126
CL118
JL134
0.1
C107
JL124
10k
R171
100
RB002
CL146
CL123
CL106
100
R131
10k
R121
DA2J10100L
D1
11
220
R179
1
C179
JL145
33k
R186
CL163
CL135
JL118
CL1
11
0
R197
100
R181
R152 100
JL139
100
RB001
CL140
D102
MC2840-T112-1
CL162
0.1
C137
0.1
C130
100
R173
100k
R115
CL158
47k
R118
CL131
CL148
47k
R172
CL127
CL1
12
4.7k
R148
100k
R249
16V
C141
100
16V
100
C115
16V
100
C178
6.3V
470
C200
16V
100
C175
C170
1000
6.3V
6.3V
1000
C203
1
C162
0.1
C186
0.1
C161
0.1
C157
0.1
C135
2.2
C177
2.2
C165
C152
2.2
C140
2.2
C174
2.2
C172
2.2
3
2
1
4
10uH
L101
16V
100
C199
50V
47
C195
E
ET100
16V
47
C119
JL142
JL140
100k
R117
RT1N141M-TP-1
Q108
RT1N141M-TP-1
Q112
RT3N11M-TP-1
Q109
30P
CN101
1
RESERVED
2
DETECT
3
RESERVE
4
NC
5
NC
6
LRCK_X
7
BCK_X
8
SDIO_X
9
LRCK_W
10
BCK_W
11
SDIO_W
12
GND
13
+3.3V
14
+3.3V
15
GND
16
GND
17
256FS
18
INT
19
PD-OUT_Airoha
20
NC
21
I2CSDA
22
I2CCLK
23
RESET
24
GND
25
SDIO_Y
26
BCK_Y
27
LRCK_Y
28
SDIO_Z
29
BCK_Z
30
LRCK_Z
390
R221
C184
8p
10p
C185
150
R206
S101
S100
RT3AMMM1-T111-1F
Q106
2
3
4
4P
CN106
NC
1
LED(R)
LED(G)
GND
0.1
C189
0.1
C188
0.1
C187
0.1
C131
0.1
C132
R216
0
R209
0
4.7k
R187
100k
R199
C136
2.2
1k
R243
R234
47k
100k
R231
1k
R242
R129
100
RXD1
CNVSS
RESET
DATA
TXD1
2.4/5.8_DET
2.4/5.8_DET
RESN
SCL
CNVSS
TXD1
RXD1
GPI02
DETECT
SDA
256FS
GPI02
DETECT
SDA
SCL
RESN
LRCK
BCK
RESET
256FS
LRCK
BCK
DATA
POWER AMP
IC104
STREAM PROCESSOR
IC105
CLOCK BUFFER
IC107
IC103
PRESCALER
IC106
+1.8V REGULATOR
+3.3V REGULATOR
IC108
IC109
+12V REGULATOR
IC101
RESET SIGNAL GENERATOR
SYSTEM CONTROLLER
IC100
SUB MAIN BOARD
(CHASSIS)
DC DETECT
POWER
DETECT
OVER LOAD
DETECT
-2 -1
-1 -2
-1 -2
SHUT DOWN
SWITCH
B+ SWITCH
POWER DETECT
B+ SWITCH
-1
-2
-1
-2
Q109, 111
LED DRIVE
RESET SWITCH
SL101
SL1
16
SL1
17
SL1
18
SL102
SL1
19
SL120
SL121
SL122
SL100
/
SECURE
LINK
(NC)
WIRELESS
(EZW-RT50)
TRANSCEIVER
EZW-RT20
EZW-RT50/
SP100
13
A
15
K
E
D
C
4
14
16
17
8
21
G
B
1
18
11
3
10
I
9
J
F
19
H
M
N
O
L
6
2
20
5
7
12
BOARD
CN901
>01S
POWER
CL902
CL901
CL900
(GRN)
(RED)
CL-165HR/HG5-D-T
D901
1
2
3
3P
CN901
LED(R)
LED(G)
GND
82
R900
820
R901
FRONT LED BOARD
/
3-2.  SCHEMATIC  DIAGRAM - MAIN Section -
• See page 14 for Waveforms.   • See page 20 for IC Block Diagrams.   • See page 23 for IC Pin Function Description.
Note: When 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 3.
SA-WCT260
SA-WCT260
16
16
3-3.  PRINTED  WIRING  BOARD - MAIN Section (1/2) -
• 
 : Uses unleaded solder.
Note: When 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 3.
C1
B1 E1
C2
B2
E2
C1
B1
E1
C2
B2
E2
1
9
C1
B1
E1
C2
B2 E2
1
14
8
7
1
16
17
32
33
48
49
64
1
44
22
23
1
24
25
36
37
48
12
13
1
5
C1
E1
C2
B2 E2
C1
B1
E1
C2
B2
E2
B
E
1
4
5
15
16
26
27
30
R216
R217
R219
R221
R222
R223
R224
R225
R226
R227
R230
R234
R235
R236
C200
C203
R242
R243
R249
CL100
CL101
CL102
CL103
CL104 CL105
CL106
CL107
CL108
CL109
CL110
CL111
CL112
CL113
CL114
CL115
CL116
CL117
CL119
CL121
CL122
CL125
CL126
CL127
CL128
CL133
CL138 CL139
CL140
CL142
CL143
CL145
CL146
Q102
Q103
CL147
Q104
CL148
Q105
CL149
Q106
Q108
SL100
Q109
SL101
SL102
CL150
CL152
CL153
Q110
CL154
Q111
CL155
Q112
CL156
CL157
CL158
CL159
CL160
CL161
SL116
CL162
CL163
SL117
CL164
SL118
CL165
SL119
CL166
CL168
CL169
SL120
SL121
SL122
CL170
CL171
CL172
CL173
CL174
CL175
CL176
FB100
FB101
R103
R105
R109
R112
R115
R118
R119
CN101
CN102
R121
R127
R130
C101
C103
C104
C106
C107
C108
C109
C110
X100
X101
C114
C115
C118
C119
R158
R159
C120
R160
C125
C129
C131
C132
R173
C137
R174
R177
R179
C140
C141
JL128
R180
R181
R182
R183
R184
R185
R186
R187
JL130
R188
JL131
JL132
JL133
JL134
JL135
JL136
C152
JL137
R190
JL138
C155
JL139
R191
R192
R193
C158
R194
R195
R196
R197
R198
R199
JL141
JL143
JL145
D101
D102
JL146
C162
D104
RB001
C165
RB002
C166
RB003
C167
C170
D111
D112
JL157
ET100
C175
C177
C178
C179
IC100
IC101
IC103
IC104
C184
C185
IC105
IC106
IC107
C187
IC108
C188
C189
IC109
C194
C195
C198
C199
C05
R200
R202 R203
R205
R206
R208
R209
(CHASSIS)
E
E
E
E
SUB MAIN BOARD  
(COMPONENT SIDE)
1-883-799-
WIRELESS
TRANSCEIVER
(EZW-RT50)
EZW-RT50/EZW-RT20
(NC)
1
3
5
4
1 2
4 3
1
2
3 4
1
3
5
4
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
10
11
12
11
(13)
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