Sony CMT-DH70SWR / SA-WDH70SWR Service Manual ▷ View online
SA-WDH70SWR
5
MEMO
SA-WDH70SWR
6
SECTION 3
DIAGRAMS
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF) 50
• All capacitors are in μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specifi ed.
• 2 : Nonfl ammable resistor.
• C : Panel designation.
• 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.)
(In addition to this, the necessary note is printed in each block.)
• A : B+ Line.
• B : B– Line.
• Voltages are dc with respect to ground under no-signal
• B : B– Line.
• Voltages are dc with respect to ground under no-signal
conditions.
no mark : POWER ON
• Voltages are taken with VOM (Input impedance 10 M
• Voltages are taken with VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal production
tolerances.
• Signal path.
F :
F :
AUDIO
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
•
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
B
These are omitted.
C E
Q
Note: The components identifi ed by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specifi ed.
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
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.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• IC Block Diagram
– AMP Board –
IC125 STK404-130S
2
3 4
5
6 7
8 9
10 11
12 13
POSI
SW
-IN
SW
-NF
SUB
-PRE
+PRE
BIAS+
BIAS-
-VCC
+VSS
-RE
+RE
1
POSI
SA-WDH70SWR
SA-WDH70SWR
7
7
3-1. PRINTED WIRING BOARDS - AMP Section -
•
: Uses unleaded solder.
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
B
E
R210
R211
R212
R213
R214
R215
R216
JR210
JR212
JR213
Q125
Q126
Q127
Q128
Q129
Q130
Q131
Q132
Q133
Q135
Q136
Q137
Q138
Q140
Q141
Q142
R125
R126
R127
R128
R128
R129
R130
R131
R132
R133
R134
R135
R136
R137
R138
R139
R140
R141 R142
R143
R144
R145
R146
R147
R148
R149
R148
R149
R150
C133
R151
R152
R153
R154
R155
R156
R157
R159
R160
R161
R162
R163
R164
R165
C129
R166
R167
R168
R169
R170
C134
C135
R171
R172
C136
R173
R174
R175
R176
R177
R178
R179
C141
C142
R180
R181
C147
R183 R184
R185
R188
R189
C152
C153
R190
R191
C155
R192
R193
R194
R195
R197
R199
C160
C159
D125
D126
D127
D128
D129
D130
D135
D137
D138
R202
R204
R206
R208
R209
BE
BE
Q115
Q116
R115 R116
R117
R118
R119
R120
1
3
CN115
D115
R121
R122
C122
R123
1
6
1
3
RV121
A121
A122
CN121
CN122
C121
J121
1
6
1
5
1
3
1
13
1
3
E
B
1
1
2
6
A125
A126
A127
A128
JW210
JW211
JW212
JW213
JW214
JW215
JW216
JW217
JW218
JW219
JW220
JW221
JW222
JW223
JW224
JW225
JW226
JW227
JW228
JW229
JW230
JW231
JW232
JW233
JW234
JW235
JW236
JW237
Q139
L125
CN125
CN127
CN128
CN129
CN131
R158
C125
C127
C128
C131
C130
C132
C137
C138
C139
C140
C143
C144
C145
R182
C146
C168
C148
C149
C151
C154
C156
C157
C158
C162
C163
C164
RY125
C165
C166
C167
JW125
D131
D132
D133
D134
D139
ET125
D140
D141
D142
D143
IC125
IC126
R201
CP125
R203
R205
B
PT BOARD
CN63
A
PT BOARD
CN62
(SUBWOOFER)
SP1
RY125
(CHASSIS)
1-879-698-
11
(11)
AMP BOARD
1-879-700-
11
(11)
LED BOARD
1
(GRN: POWER ON)
(RED: STANDBY)
D115
SUBWOOFER
LEVEL
1-879-699-
11
(11)
INPUT BOARD
M101
(FAN)
M
INPUT
A
B
C
D
E
F
1
2
3
4
5
6
7
8
9
SA-WDH70SWR
SA-WDH70SWR
8
8
3-2. SCHEMATIC DIAGRAM - AMP Section -
• See page 6 for IC Block Diagram.
CN62
PT
A
BOARD
B
CN63
PT
BOARD
IC B/D
3.6
3
12.1
5.3
5.2
12.1
4.9
4.3
12.1
0
0
0
1.3
0.7
0.7
0
0
12.1
12.1
0
11.2
0
1.3
0.7
0
11.4
11.2
0
0.2
0.8
9.9
-2.5
11.2
0
0
0.7
0.7
0
12.1
0
0
11.2
12.1
19.4
0.1
0.1
11
.2
11
.4
1.1
-43.5
12.1
0
0
-43.8
43.8
2
0.4
0.4
11.4
0.7
0.7
1k
R127
100k
R126
2SC3052EF-T1-LEF
Q125
0
R144
2SC3052EF-T1-LEF
Q127
10k
R154
2SC3052EF-T1-LEF
Q130
1k
R131
50V
2.2
C128
0.22
CP125
7
6
5
4
3
2
1
13
12
11
10
9
8
STK404-130S
IC125
PT
-1
PT
-2
SW IN
SW IN NF
SUB
-PRE
+PRE (12V)
-VCC
+VCC
-RE
+RE
2SA2026
Q131
100k
R128
R174
2.2k
R185
47k
R184
22k
R180
100
R178
10k
C151
100
16V
R173
100k
R195
22k
1
2
2P
CN127
SP-OUT
SP-GND
C147
2200p
R169
10k
R164
10
Q137
2SC3052EF-T1-LEF
Q135
2SC3052EF-T1-LEF
Q133
2SC3052EF-T1-LEF
16V
47
C132
C145
0.1
C146
0.1
C139
47
50V
10
R163
10
R166
10
R165
C134
3p
0.22
C127
0.22
C130
56k
R133
JW125
R192
10k
L125
R168
220
R170
4.7k
10k
R176
0.022
C153
47k
R129
R188
47k
R189
47k
2SC3052EF-T1-LEF
Q138
C163
4.7
50V
C164
10
50V
0
R125
0.22
C143
R208
10k
R209
4.7k
R210
470
R199
4.7k
R204
47k
C167
47
50V
R206
100k
R201
10
R203
10
R205
10
C158
330
25V
1.5k
R130
1k
R145
1k
R167
3.3k
R132
KTA1273-Y-AT
Q139
82k
R137
100k
R138
0.047
C144
R191
22k
R194
82k
R193
100
16V
100
C148
R172
2.2k
R140
15k
15k
R146
R153
15k
R148
15k
R147
15k
R183
47k
R177
47k
35V
470
C162
47k
R175
15k
R181
R179
100k
R171
10k
MA111-TX
D129
MAZ8051GMLS0
D138
R214
22k
50V
1
C166
22k
R212
R215
22
220k
R213
R216
22
220k
R211
50V
1
C125
I
O
G
KIA7812API-U/PF
IC126
C152
0.1
C155
0.1
2W
4.7k
R158
MAZ8120GMLS0
D126
16V
100
C140
C136
0.1
C135
0.1
100V
22
C137
RY125
ISA1235AC1TP-1EF
Q132
1
2
3
4
5
6
6P
CN128
AC-1
AC-1
GND
GND
AC-1
AC-1
2SC3052EF-T1-LEF
Q140
2SC3052EF-T1-LEF
Q142
2SC3052EF-T1-LEF
Q141
1N4002-A2
D139
MA2J1110GLS0
D128
D137
MA2J1110GLS0
D130
MA2J1110GLS0
1
2
3
4
5
5P
CN129
AC-2
AC-2
GND
V-SUB
RELAY
1N4002-A2
D143
1N4002-A2
D142
1N4002-A2
D140
1N4002-A2
D141
1N5402-C532-2
D131
1N5402-C532-2
D132
1N5402-C532-2
D133
1N5402-C532-2
D134
E
ET125
1
2
3
3P
CN131
POWER-RELAY
V-SUB
GND
C149
16V
470
Q136
2SC3052EF-T1-LEF
10V
47
C165
D135
MA2J1110GLS0
1
2
3
4
5
6
CN125
3P
IN
IN-GND
POWER-ON
GND
FAN-
FAN+
C154
100
16V
C156
4700
63V
C157
4700
63V
R182
22k
R161
680
R134
R197
100k
0.0047
C129
0
R202
4.7
R190
33
R142
33
R141
33
R150
33
R151
33
R155
33
R156
R149
15k
56k
R136
50V
10
C138
Q129
2SC3052EF-T1-LEF
MAZ8120GMLS0
D127
Q128
2SC3052EF-T1-LEF
C141
0.1
C142
1
Q126
2SC3052EF-T1-LEF
MA2J1110GLS0
D125
10k
R152
4.7k
R157
47k
R162
47k
R159
22k
R139
4.7k
R160
1.5k
R143
22k
R135
+12V REGULATOR
IC126
IC125
POWER AMP
(CHASSIS)
AMP BOARD
SP101
1
2
3
FAN MOTOR DETECT
Q140 -142
(SUBWOOFER)
DRIVE
FAN MOTOR
Q138, 139
RELAY DRIVE
Q136, 137
DETECT
TEMPERATURE
PROTECTER
DETECT
OVER VOLTAGE
LINE AMP
FILTER AMP
FILTER AMP
OVER LOAD
DETECT
5W
SPR-39MVWF
D115
1k
R116
22k
R118
22k
R120
22k
R119
1k
R117
1
2
3
3P
CN115
POWER-RELAY
V-SUB
GND
1.5k
R115
LED BOARD
Q116
2SC3052EF-T1-LEF
LED DRIVE
Q115
2SC3052EF-T1-LEF
LED DRIVE
/
(RED : ST
ANDBY)
(GRN : POWER ON)
J121
20k
RV121
50V
4.7
C121
1k
R122
1
2
3
4
5
6
6P
CN121
IN
IN-GND
POWER-ON
GND
FAN-
FAN+
1
2
3
3P
CN122
FAN+
FAN-
FAN+
2.2k
R123
1k
R121
INPUT BOARD
M101
M
(FAN)
INPUT
SUBWOOFER
LEVEL
J
4
B
16
6
9
11
D
15
H
10
17
3
5
12
C
F
18
1
19
E
8
G
14
A
2
13
I
7
RELAY DRIVE
Q128, 129
DETECT
OVER VOLTAGE
0.01
C122
100p
C131
0.01
C133
0.01
C168
0.1
100V
100V
C159
0.1
C160
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