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WX-7700MDX
39
39
5-16. SCHEMATIC DIAGRAM – MAIN Board (2/4) –
•
See page 52 for Waveforms.
•
See page 55 for IC Block Diagrams.
D102
R243
C217
R228
C306
R234
R232
R244
Q203
Q204
C225
C223
Q105
R149
C132
C129
R148
Q104
R134
R136
C224
R233
R231
R135
C131
C222
R133
C128
IC103
C118
R122
C322
C323
R320
R321
C321
C320
C117
C120
R146
C119
R123
C121
R217
R226
C213
C212
C215
R227
C214
R218
C216
R125 R126
C123
IC102
C240
C241
C242
R309
R308
R307
R306
R305
R304
R303
R302
R300
C300
C301
R139
C136
R140
C137
C230
C229
C232
R238
C134
C135
R237
C231
C314
C315
R314
Q311
R313
C316
R318
R315
Q300
R316
R317
R319
C310
C312
L301
IC301
R312
L300
C308
C307
C238
C239
C209
C210
R215
C237
R214
R213
R210
C236
C142
R212
R211
R118
R120
C144
C115
C211
C116
R115
C143
C141
C114
R117
R116
C319
C318
C124
C218
R221
R220
C221
R229
R245
R150
R230
R132
Q103
Q202
R131
C127
R129
C126
Q101
R130
R225
C220
Q200
Q100
R127
C125
R224
R128
R223
Q201
C219
R222
C227
C133
CN332
CN3
PNJ2
R119
R145
IC303
R121
R124
R216
IC202
R219
IC104
IC201
IC302
C305
C304
D103
R248
R246
R247
C243
C246
R236
R138
C228
C145
R147
C313
R137
R235
D101
C122
C130
C226
R153
C146
PNJ1
DA204UT106
1k
22p
47k
0.1
47k
47k
1k
2SD1328
2SD1328
100p
100p
2SD1328
1k
100p
100p
1k
2SD1328
47k
47k
2.2
50V
220
220
220
2.2
50V
2.2
50V
220
2.2
50V
NJM4580E
10
16V
4.7k
0.1
10 16V
1k
1k
100
16V
0.1
22p
22p
4.7k
10
16V
4.7k
100p
4.7k
4.7k
10
16V
22p
22p
4.7k
10
16V
4.7k
100p
22k
56k
22p
NJM4580V
1
1
1
100
100
100
100
100
100
100
100
47k
4700p
0.47
1k
100p
10k
1
50V
1
50V
100p
1
50V
10k
100p
1
50V
1k
100p
1
50V
0.1
470
XP6501
1k
0.01
1k
1k
2SB1132
10k
1k
0
100
16V
0.1
BA08SFP
1.5k
0.01
10
16V
1
1
10
16V
10
16V
56k
22p
22k
10k
56k
22p
2.2
10k
22k
10k
56k
22p
10
16V
0.1
0.1
56k
22p
2.2
10
16V
10k
22k
0.1
22
20V
100p
10 16V
22k
56k
10
16V
220
1k
1k
47k
47k
2SD1328
2SD1328
220
10
16V
220
2.2
50V
DTC314TK
47k
47k
2.2
50V
DTC314TK
DTC314TK
220
2.2
50V
220
47k
47k
DTC314TK
2.2
50V
220
100p
100p
5P
3P
2P
22k
4.7k
NJM4558E
7.5k
7.5k
7.5k
NJM4580E
7.5k
NJM4580V
NJM4580V
TC7660S
0.1
100
16V
DA204UT106
0
1k
1k
1
1
10k
10k
0.1
0.01
47k
22
16V
1k
1k
DA204UT106
10 16V
1000p
1000p
1
1000p
6P
A1
A2
A3
A4
A5
A6
A7
A8
D1
D2
D3
D4
D5
D6
S
E
M
M
P
X
FL
RL
FR
RR
V
S
M
ID
A
IC
K
SWL
SWR
AUX_R
AUX_GND
AUX_L
AUX_GND
AUX_R
S
E
L
_
L
S
E
L
_
R
S
E
L
_
G
N
D
S
U
B
FL
RL
RR
FR
FL
RL
FR
RR
FL
FR
RL
RR
SWL
SWR
B
US
_
G
N
D
BUS_R
BUS_GND
BUS_L
B
U
S
_
R
B
U
S_
L
RL
FL
RR
AUX_L
FR
VOLATT
RL
FL
RR
FR
GND
(CHASSIS)
(CHASSIS)
BUS AUDIO
IN
FRONT
REAR
AUDIO OUT
(L)
(R)
(L)
(R)
(L)
(R)
(L)
(R)
(L)
(R)
AUX IN
MUTING
MUTING
MUTING
MUTING
MUTING
MUTING
MUTING
MUTING
MUTING
MUTING
CENTER
VOLTAGE
GENERATOR
(FOR BIAS)
LOW-PASS
FILTER
LOW-PASS
FILTER
LINE AMP
LINE AMP
LINE AMP
DC/DC
CONVERTER
-1
-2
Q300,311
+8V REGULATOR
REGULATOR
SUB WOOFER OUT
(MONO)
10
µ
H
10
µ
H