Page 1
KS-AX7700
SCHEMATIC DIAGRAMS
POWER AMPLIFIER
KS-AX7700
CD-ROM No.SML200303
Contents
Block diagrams
Standard schematic diagrams
Printed circuit boards
2-1
2-2
2-4,6
COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD.
Area Suffix
J Northern America
No.49809SCH
2003/03
Page 2
KS-AX7700
Safety precaution
!
Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.
Page 3
KS-AX7700
Block diagram
5
BOOST 0-12dB CROSSOVER
INPUT
VARIABLE/INV.CIRCUIT(Gain1)/Amplifier
AMP
R-IN
31
U101
-A
7
VR101B
3
U102
-A
1
VR103A
4
3
U106
-A
1
2 2
3
U103
-A
50-250Hz 12dB/OCT VARIABLE
1
VR102A
2
U104
-A
1
VR102C
2
U105
-A
POWER
AMP
Q142-Q146
Q148,Q149
Q152
Q161-Q166
R-OUT
L-OUT
LPF
HPF
OFF
SW101A
6
1
L-IN
57
U101
-B
6
VR101A
6
U102
-B
7
VR103B
3
U206
-A
1
1 1
5
U103
-B
7
VR102B
6
U104
-B
7
VR102D
6
U105
-B
7
HI-INPUT
3
+12V
D.C.
REM
2
R
L
POWER
INPUT
F01,F02
Q701
Q702
Q790
CCFL+12V
INVERTER
LOAD
CCFL
board
POWER
CONTROL
U701
VR701
POWER
REGULATOR
Q730,Q731
Q745-Q747
Q755-Q757
Q705
-708
TRANS
& REGULATOR
Q780
T1
U703
U704
SW101B
LPF
HPF
OFF
MUTE
CONTROL
+/-15V
VCC
VEE
7
Q242-Q246
Q248,Q249
Q252
Q150
Q250
Q261-Q266
PROTECT
Q171-Q176
Q272
1
ABC DEFGH
2-1
Page 4
Standard schematic diagrams
KS-AX7700
KS-AX7700
Amp section
Q148
Q149
C149
100/16V
Q248
A1220Y
100/16V
C146
100P
C147
100P
C148
C246
100P
Q249
A1220Y
C247
100P
C249
C144
104P
R151
22KF
5P
C244
104P
R261
C248
5P
BOOST 0-12dB(45Hz) VARIABLE
5
C121
104P
R-IN
RCA01A
SY-SW0406-82
R101
22K
C101
4.7/50V
C102
4.7/50V
R103
22KF
R102
22KF
C104R105
22P56KF
C105
100P
3
2
NJM2068LD
8
R106
56KF
C106
U101-A
22P
1
7
C107
470P
4
CHDW1140-N
+
R
-
C162
102P
C262
102P
-
L
3
+
L-IN
RCA01B
SY-SW0406-82
R260
22KF
C163
102P
R160
22KF
C263
102P
R201
22K
C161
4.7/50V
C160
4.7/50V
C260
4.7/50V
4.7/50V
C201
C202
4.7/50V
R188
150KF
R166
150KF
R266
150KF
R288C261
150KF4.7/50V
R202
22KF
R203
22KF
R205 C204
56KF 22P
C205
100P
C122
104P
U101-B
NJM2068LD
8
5
6
R206
C206
22P
56KF
R208
1K
7
6
C207
470P
2
R108
C123
104P
VR101B
20KB
1K
C125
4.7/50V
R109
1K
9
VR101A
20KB
R209
1K
SUB-1
3
U102-A
8
NJM2068LD
3
1
2
R112
30KF
C108
33P
R111R110
11KF15K
45
C124
104P
24P
C208
56KF
R212
R210C225
15KF4.7/50V
6
5
4
U102-B
NJM2068LD
R211
12K
BOOST 0-12dB(45Hz) VARIABLE
U106-A
NJM2068LD
C216
R240
680K
R135
1K
R235
R136
1K
NJM2068LD
1K
C215
224(M)
NJM2068LD
3
2
R139
5.6K
5
6
U106-B
NJM2068LD
U206-A
3
2
R236
1K
R239
5.6K
5
6
U206-B
R134
1K
20KB
VR103A
C115
224(M)
C116
183(M)
R140
680K
R234
1K
7
VR103B
20KB
183(M)
8
C117
8
8
R237
20K
8
C217
R137
20K
1
47P
R138
330K
7
1
47P
R238
330K
7
2
2
2
3
R113
10K
1
1
R213
6
10K
5
CROSSOVER(50-250Hz 12dB/OCT VARIABLE)
3
R115
10K
47P
C109
R114
10K
VR102A
50KC
1
4
U103-A
NJM2068LD
45
10K
R215
47P
C209
R214
10K
7
4
U103-B
NJM2068LD
10K
R117
988
R216
VR102B
50KC
15K
10K
R217
CROSSOVER(50-250Hz 12dB/OCT VARIABLE)
2
3
6
5
U104-B
NJM2068LD
C110
473(M)
1
4
U104-A
NJM2068LD
7
4
SUB-2
VR102D
50KC
R148
430
R248
430
C143
224(M)
C243
224(M)
R152
51
D143
IN4148
A1220Y
A1220Y
D151R147
1N52351K
R150
3.3K
R154
1KF
R252
51
D243
1N4148
D251R247
1N52351K
R250
3.3K
R254
1KF
R143
+15V
C190
330/16V
C111
C112
2.2/50V
473(M)
VR102CR116
R118
50KC15K
R218
15K
15K
2
3
U105-A
NJM2068LD
6
5
NJM2068LD
1
4
R130
22K
C113
2.2/50V
C345
470/16V
C211C210
473(M)473(M)
7
4
U105-B
C213
2.2/50V
R230 R231 R232
22K 22K 22K
C212
2.2/50V
FLAT
C114
2.2/50V
MUTE
JSS2319
SW101A
LPF
FLAT
HPF
SW101B
JSS2319
C214
2.2/50V
R141
C119
5.6KF
R233
100K
R133
100K
R170
10K
R270
10K
R241
5.6KF
C219
4.7/50V
4.7/50V
Q150
J108
Q250
J108
6
R132R131
22K22K
LPF
7
HPF
330
Q142 Q143
KTA1023Y KTA1023Y
Q144
KTC1027Y
KTC1027Y
R180
C120
22KF
100P
R144
360
-15V
R243
330
Q242
KTA1023Y
R280
C220 R267
100P 0.05/5W
22KF
R244
360
Q244
KTC1027Y
KTC1027Y
R245
100K
Q146
Q246
C142R145
104P100K
C242
104P
Q152
C2690Y
Q252
C2690Y
Q145
KTC1027Y
R146
510
R149
22
Q243
KTA1023Y
Q245
KTC1027Y
R246
510
R249
22
R142
330
R242
330
H.VCC VCC
C145
100/63V
R161
Q161
47
IRF640
Q163
IRF640
0.05/5W
C245
100/50V
Q262
IRF640
R268
0.05/5W
Q162
R168
H.VCC
Q261
R173
330
100/50V
C171
IRF640
IRF640
Q263
IRF640
Q264
IRF640
Q164
47
R181
R186
47
R162
330
R187
47
47
R185
R163
47
R164
330
B
A
4747IRF640
R281
47
R286
R262
330
47
R287
47
R285
47
R263
R264
330
R251
22KF
R167
0.05/5W
R174
43K
R183
100K
Q165
IRF640
Q166
IRF640
C172
102P
Q265
IRF640
Q266
IRF640
R176
100K
R175
82K
R295
100
1N4148
R178
1K
R177
390
Q173
KTA1023Y
Q172
KTC1027Y
Q271
KTA1023Y
D242
R195
100
VEE
R271
330
R172
1K
Q171
KTA1023Y
1N4148
Q174
KTA1023Y
VCC
A
R272
1K
D142
R171
330
B
B
R179
15K
A
R169
4.7/0.5W
L102
CL-200C
D170
1N4148
Q175
KTC3198GR
4.7/0.5W
CL-200C
VEE
R165
56K
R269
L202
C191
104(M)
R191
22/2W
VEE
104(M)
22/2W
C291
R291
PROTECTION
Q176
KTC3198GR
R395
4.7K
C173R265
100/16V56K
P02
TMN004-02
R-OUT
L-OUT
1
ABC DEFGH
2-2
Page 5
KS-AX7700
Power section
R791
Q790
CCFL-INVERTER PCBOARD
2.2/0.5W
5
R701
GND
V-IN
R804
200
C803 D801
103P 1N5241
Q803
C2690A
L801
CL-113
C804
104P
R801
1.5K/0.5W
Q802
C1027Y
Q801
C1027Y
C801
473/100V
T02
CHT-100
R802
4.7M/0.5W
R803
4.7M/0.5W
C802
18P/3KV
OUT1
CCFL L=190m/m
C715
104P
R716
51KF
R715
140KF
C701
10/25V
Q701
68/0.5W
KTA1023Y
R702
4.7K
R703
4.7K
Q702 C868
KTC3198GR 0
R704
4.7K
R705
10K
D702
1N4004
4
D710
220/0.5W
R742
220/0.5W
Q710
KTC3198GR
1N4148
R743
D711
1N4148
Q730
KTA1266GR
Q731
KTA1266GR
R752
1.5K
R744
R754
1K
1K
LED01
KLR-124E
C717
47/16V
16 15 14 13 12 1110 9
R717
4.7K
C731
100/16V
R720
R725
10
10K
Q706
KTA1266GR
U701
TL494CN
87654321
3
C740
102(S)
R741
24KF
VR701
2K
R750 R751
27K 12K
C741
47/25V
R718
4.7K
C716
334(M)"TL"
Q705
KTA1266GR
C718R719
220/16V10K
TH01
50KTH
R740
47K
2
R747
100
R746
100
R745
100
R755
100
R756
100
R757
100
C
E
TIP117
B
R792
2.2K
Q745
FQP50N06
Q755
FQP50N06
Q746
FQP50N06
Q756
FQP50N06
Q747
FQP50N06
C752
104P
Q757
FQP50N06
C753
1000/35V"RX"
C750
2200/25V"RX"
C751
2200/25V"RX"
(0.7PHIX15)
C862
104P
F01
D751
YG225D2
D752
D731
PR1504x4
D732
D734
D735
C780
22P
D701
1N5404
D722
PR1504
C728
10/100V
25AX2
R782
4.7M
F02
D850
1N4148
L721
47uH
R853
4.7K
2
CL-1112
C767
1000/50V
C768
1000/50V
1
CL-1112
Q780
J108
L702
R382
560/3W
C761
2.2/50V
C762
4.7/50V
R182
560/3W
C850
10/16V
C724
104P3T
4
3
C781
10/50V
R852
22K
R850
4.7K
C788
104P
C787
104P
KTA1023Y
L701
CL-900A
C861
223P
C727
10/100V
D723
PR1504
R760
T1
100/2W
49PHI
BEAD
C863
103(M)
15T
5T
15T
C864
103(M)
(0.7PHIX5)
C760
BEAD
222(M)
YG225D2
ADD FERRITE BEAD 2POINT
D770
R780
1N4148
220K
D771
R781
1N4148
10K
5T
Q850
KTC3198GR
R777
10K/0.5W
R778
10K/0.5W
C786
100/35V
C785
100/35V
R851
4.7K
Q851
R722
22/1W
2200/50V
2200/50V
U703
KIA7815PI
U704
KIA7915PI
C705C706
47/25V104P
C769
C770
OCI
OCI
C860
47/25V
X
C763
TMN005-01
C725
10/100V
2200/50V
2200/50V
C771
C772
P01
+12V D.C
REM
GND
C726
104P
C773
105(M)
C774
105(M)
C765
104P
C766
104P
H.VCC
CON01
CCFL+12V
VCC
VEE
MUTE
+15V
-15V
CCFL+12V
CCFL BLOCK
Q707
LOADINVERTER
KTC3198BL
C720
104P
R726D704
9101N4148
R731R730
22K1K
R732C721
33K10/25V
C722R733Q708
47/25V15KKTA1268GR
W01
C867
104P
50m/m
C792
473P
R734
15K
PROTECTION
R790 C791
10K 105(M)
C790
473P
C866C865
XX
1
ABC DEFGH
2-3
Page 6
KS-AX7700
KS-AX7700
Printed circuit boards
Main board (forward side) Main board (reverse side)
FH01
C705
C781
R148R149
C772
L102
R168
R167
R169
P02
C191
R191
RUBBER1
TH01
D751 D752
ECB
Q161Q163Q166 Q165Q152Q164Q162
SDGSDGSDGSDSGDGSDG
RUBBER5
R191
C191
5
L102
R169
L202
C705
C781
4
TH01
D751
D752
R777
R778
3
VCC
VEE
R-OUT
Q162
R168 R167
2
Q166 Q164
SSS SSSDDD DDDGGG GGG
ECB
ECB
Q152
Q165
1
Q161 Q163
R146
R181
B.K RED
G
Q780
C769
R165
R149
R148
P02
C291
R291
R269
R792
Q790
C772
R163
R162
R186
C731
R717
R718
C706
R719
R720
C716
+12V
CON01
Q705
D704
C780
R782
R726
D770
D771
R780
R781
C773
C774
Q176
R395
R185
R187
Q174
D170
D142
R172
R177
R179
Q171
D143
R143
R171
R195
Q142
ECB
ECB
Q148
C146
Q149
R164
C147
ECB
ECB
R144
Q144
Q146
R145
C142
R147
D151
R161
R
R150
C143
C161
C160
R160
C163
+
GRAYGRAY-B.K
FH01
1
0
1
J
B
R752
R751
Q710
R791
R705
R704
C715
Q702
U701
Q706
R750
R725
C718
C717
R740
R730
Q707
C720
R734
R733
C722
Q175
C173
Q173
R178
C144
Q143
R152
R142
Q145
R154
R170
(50-250Hz 12dB)
(50-250Hz 12dB)
Q150
C120
R180
R141
C119
U101
R188
R166
R103
R101
C162
C102
RCA01
D702
R701
Q701
R703
R716
C701
R702
L701
R715
D711
R741
VR701
C740
R732
R731
D710
Q708
C771
C770
R265
L-F.IN
L-F.IN
R-F.IN
R-F.IN
+15V
+15V
-15V
-15V
R176
GND
GND
R-OUT
R-OUT
L-OUT
L-OUT
C145
C148
R151
C149
R133
C106
C101
R102
R743
C721
R744
Q730
R760
SUB2
SUB2
FLAT/LPF/HPF
2-GND
R206
C122
R106
C105
C205
R105
R205
C104
C204
++LR
GG
C741
R742
Q731
R754
C863
L-F.OUT
L-F.OUT
R-F.OUT
R-F.OUT
+15V
+15V
-15V
-15V
GND
GND
C123
R-IN
R-IN
L-IN
L-IN
BOOST(0-12dB)
BOOST(0-12dB)
C206
R202
LED01
2,3
2,3
C750C751
PAM37801
1
1
2
2
16x20
4
4
3
3
16x20
C767
D242
R272
C244
R242
D243
R252
Q243
C248
R254
Q245
R280
C220
Q250
R250
C219
C785
C261
C260
R260
C262
U704
WHITE
C702
6,7
6,7
C768
C726
R173
R174
C171
R243
Q242
ECB
ECB
C247
ECB
ECB
Q249
Q244
R247
D251
C766
C709
C861
C862
4
4
T01
8
8
C864
C760
L702
SUB1
SUB1
C124
C245
R251
C249
LEVELCROSSOVER
LEVELCROSSOVER
C201
R201
R270
R241
R233
C121
R203
R288
R266
C263
--+
L
WHITE-B.K
C202
Q271
C243
H.VCC
Q248
C345
P01
C860
D701
C752
Q747
C753
C727
D723
VEE
L-OUT
R175
Q172
R295
C246
R264
Q246
R244
R747
1
1
R746
R745
R755
5
5
R756
C865
C866
R790
R757
C790
C791
C761
D722
C725
R271
R281
C787
C792
D734
D731
C728
Q850
C724
R722
R183
R263
R285
C172
R287
R262
R249
R248
R246
R245
C242
R261
C190
C765
R182
D735
L721
R850
D732
C762
Q851
R851
Q262 Q261Q746 Q745 Q755 Q756 Q757
Q264
Q266
R267R268
Q252
Q265
Q263
R286
C786
C763
U703
C788
R382
C868
C867
W01
D850
R852
R853 R854
C850
GGGGGG DDDDDD S SSSSS
ECB
ECB
RUBBER2
RUBBER4
C868
SDG SDG SDGSDG SDG SDG
C867
W01
R854
D850R852
R853
H-VCC
SDG
GDSSDG
ECB
DGS
GDS
SDG
C762
Q252
Q747
Q757
D734
Q262
Q266
Q265 Q264
Q263
Q261
Q756 Q755 Q746Q745
D731
R757
C791
C850
C788
U703
D735
Q851
C792
D732
+
R382
C860
R746
R745
R755
R756
R268
R267
R747
C866
C790
C786
C753
R182
R851
L721
R286
C761
R850
C765
C752
1
R790
+
5
R246
C242
R263
R249
R287
C865
R285
R261
C727
Q850
C190
C763
P01
C751
H.VCC
D722
C724
R183
C172
R271
R262
R248
R245
R281
C787
C728
R722
R175
Q172
Q246
R244
C725
R295
C246
D723
R264
Q271
Q249
C243
U704
R174
Q248
R247
+
6,7
ECB
C709
LED01
L701
D702
R751
C715
R740
R730
C722
C720
Q702
Q706
C717
R791
R704
R750
R734
R725
Q707
R781
R720
R705
C731
C291
Q705
R780
R718
D704
R269
R726
D771
R291
R719
R792
D770
R717
C716
C780
L202
R782
Q780
C706
Q790
REDB.K
CON01
BJ101
Q710
R752
R701
R702
C861
C862
4
C741
Q731
R742
R743
R754
R744
Q701
D711
Q730
R703 R741
C701
U701
C740
VR701
R732
D710
R715
C721
Q708
R716
C718
R731
R733
+
C702
D701
C750
2,3
T01
C863
R760
8
C864
C760
Q175
R152
C119
C102
R188
Q174
D143
Q143
C120
R150
C771
C770
C162
R177
R143
R166
Q176
Q142
C147
Q144
D151
GRAY
R179
Q171
Q149
C143
R+
C773
R395
D170
R195
ECB
ECB
Q146
C161
GRAY-B.K
C774
R-
R187
Q148
R164
R145
R147
R160
C163
R172 R171
C146
R144
C160
R161
C142
VCC
VEE
R185
D142 R165
R186
C769
R777
R778
R163
R162
R146
R181
1
C768
RED
2
N.T
L702
RUBBER3
4
C261
R272
C245
D243
C248
R280
C219
L+
R242
R251
C249
R254
Q250
R241
C260
C262
WHITE-B.K
3
C244
R260
L-
RED
L-F.OUT
R-F.OUT
+15V
-15V
R-IN
L-IN
R270
R233
C263
N.T
SUB1
L-F.OUT
R-F.OUT
+15V
C123
-15V
C124
GND
R-IN
L-IN
GND
GND
BOOST(0-12dB)
LEVELCROSSOVER
2-GND
C121
R266
R288
C201
R203
R202
C202
L+
R201
SUB2
L-F.IN
R-F.IN
+15V
-15V
GND
R-OUT
L-OUT
FLAT/LPF/HPF
C205
C105
R206
C122
C206
R205
R105
C104
C204
L+
RCA01
GG
R102
+R
L-F.IN
R-F.IN
+15V
-15V
GND
R-OUT
L-OUT
R265
R176
R151
R133
R106
U101
R+
C173
R178
Q173
C145
C144
R142 R154
C148
Q145
C149
R180
Q150
(50-250Hz 12dB)
R170
R141
C106
C101
R103
R101
C767
C726
R173
D242
+
C171
R252
R243
Q243
Q242
Q245
ECB
C247
C220
Q244
D251
R250
C345
C766
C785
WHITE
ABC DEFGH
2-4
Page 7
Sub board (forward side) Sub board (reverse side)
KS-AX7700
CON03
PAS11401
R108
C107
C207
VR101
R208
C125
R110
R112
U102
C108
R134
C117
R138
R210
R212
C208
R111
C115
R135
R137
R136
R139
R234
C116
R109
R209
C225
VR103
R211
C215
R236
R235
R237
C217
U206
R109
R209
5
R210
C225
R212
C208
VR103
4
R211
C215
R236
R235
R237
R234
C217
U206
R108
C107
C207
VR101
R208
C125
R110
R112
U102
C108
R111
CON03
C115
R135
R134
C117
R137
R136
R139
C116
PAS11401
R138
U106
U106
C216
R239
C216
R239
3
C213
R240
C214
R132
R130
R230
R131
R140
R238
C114
R232
C113
C112
VR102
R115
R140
R232
VR102
R115
R240
R238
C114
C214
R132
C113
C112
R130
R230
R131
C213
2
SW101
C109
R114
R117
C212
R231
CON02
R213
R113
PAS12401
R217
R215
R218
1
C210
U104
C211
U105
R214
C209
R118
R116R216
C110
C111
CON02
PAS12401
C111
SW101
C109
R114
R231
R213
R113
R214
C209
R118
R116R216
C110
R217
R215
R117
C212
R218
C210
U104
C211
U105
A
BC
D
2-5
Page 8
KS-AX7700
5
4
CCFL board
R802
R802
R804
+12V(RED)
GND(BLACK)
C803
D801
BCE
Q803
C804
3
CFL01
REV : 0
PAS12601
L801
2
R801
J101
Q802
C805
C801
Q801
1
2-6
A
T02
C802
BC
D
Page 9
< MEMO >
KS-AX7700
Page 10
KS-AX7700
VICTOR COMPANY OF JAPAN, LIMITED
AV & MULTIMEDIA COMPANY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
(No.49809SCH)
Printed in Japan
2003/03
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