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
2-8~9
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
Block diagram
KS-AX7700
R-OUT
AMP
POWER
SW101A
LPF
1
U105
2
1
U104
2
HPF
-A
-A
Q142-Q146
6
OFF
VR102C
VR102A
L-OUT
Q148,Q149
Q152
Q161-Q166
SW101B
LPF
7
U105
6
7
U104
6
50-250Hz 12dB/OCT VARIABLE
1
3
U103
-A
7
5
U103
7
HPF
-B
-B
-B
Q242-Q246
Q248,Q249
OFF
VR102D
VR102B
Q252
Q261-Q266
Q150
Q250
PROTECT
MUTE
CONTROL
+/-15V
Q780
T1
U703
TRANS
& REGULATOR
Q730,Q731
POWER
Q745-Q747
REGULATOR
POWER
CONTROL
Q272
Q171-Q176
VCC
VEE
U704
Q755-Q757
VR701
U701
-708
Q705
2 2
1
U106
-A
3
VR103A
1
BOOST 0-12dB CROSSOVER
U102
-A
3
VARIABLE/INV.CIRCUIT(Gain1)/Amplifier
INPUT
AMP
VR101B
7
U101
-A
31
R-IN
1 1
1
U206
-A
3
VR103B
7
U102
-B
6
VR101A
6
U101
-B
57
L-IN
HI-INPUT
L
R
DE
board
CCFL
LOAD
INVERTER
CCFL+12V
Q790
F01,F02
INPUT
POWER
F
D.C.
+12V
Q701
Q702
REM
G
2-1
Page 4
KS-AX7700
4
3
5
2
K
L
F
H
Standard schematic diagrams
Amp section
BOOST 0-12dB(45Hz) VARIABLE
CROSSOVER(50-250Hz 12dB/OCT VARIABLE)
5
2
3
6
5
U104-B
NJM2068LD
1
4
U104-A
NJM2068LD
7
4
SUB-2
VR102DR216
50KC15K
C112
C111C110
2.2/50V
473(M)473(M)
R118
VR102CR116
50KC15K
R218
15K
15K
2
3
U105-A
NJM2068LD
6
5
NJM2068LD
C211C210
473(M)473(M)
U105-B
2.2/50V
4
R130
22K
4
C213
C345
470/16V
1
C113
2.2/50V
C212
2.2/50V
7
FLAT
R230 R2
22K 22
R131
22K
C11
2.2/
M
2
R113
10K
1
R213
10K
3
R115
10K
C109
47P
R114
10K
2
1
3
4
U103-A
NJM2068LD
45
R215
10K
C209
47P
R214
10K
6
7
5
4
U103-B
NJM2068LD
VR102A
50KC
VR102B
50KC
R217
R117
10K
988
10K
C121
104P
R-IN
RCA01A
SY-SW0406-82
4
CHDW1140-N
+
R
-
C162
102P
C262
102P
-
L
3
+
L-IN
RCA01B
SY-SW0406-82
R260
22KF
2
C163
102P
R101
22K
R160
22KF
C263
102P
R201
22K
C101
4.7/50V
C102
4.7/50V
C161
4.7/50V
C160
4.7/50V
C260
4.7/50V
4.7/50V
C201
C202
4.7/50V
R102
22KF
R103
22KF
C104R105
22P56KF
R188
150KF
R166
150KF
R266
150KF
R288C261
150KF4.7/50V
R202
22KF
R203
22KF
R205 C204
56KF 22P
C105
100P
C205
100P
C122
104P
3
2
U101-A
NJM2068LD
8
R106
56KF
C106
22P
U101-B
NJM2068LD
8
5
6
R206
C206
22P
56KF
R108
1
7
C107
470P
R208
1K
7
6
C207
470P
C123
104P
VR101B
20KB
1K
C125
4.7/50V
R109
1K
9
VR101A
20KB
R209
1K
R211
SUB-1
3
R134
20KB
VR103A
C115
224(M)
C116
183(M)
1K
R140
680K
C216
183(M)
R240
680K
R135
1K
R235
1K
224(M)
U106-A
NJM2068LD
3
2
R136
1K
R139
5.6K
5
6
U106-B
NJM2068LD
U206-A
NJM2068LD
R236
1K
C215
U206-B
NJM2068LD
3
2
R239
5.6K
5
6
8
C117
8
8
R237
20K
8
C217
R137
20K
1
47P
R138
330K
7
1
47P
R238
330K
7
2
1
U102-A
8
NJM2068LD
3
1
2
1K
R112
30KF
C108
33P
R111R110
11KF15K
45
C124
104P
C208
24P
R212
56KF
R210C225
15KF4.7/50V
12K
6
5
U102-B
NJM2068LD
R234
7
4
VR103B
20KB
1
2-2
A
BOOST 0-12dB(45Hz) VARIABLE
CROSSOVER(50-250Hz 12dB/OCT VARIABLE)
BC
D
Page 5
KS-AX7700
1
1
H.VCC VCC
C244
104P
R261
R281
R286
R263
R251
22KF
R181
R186
R162
R187
R185
R163
R164
R262
R287
R285
R264
330
330
330
330
C145
100/63V
R161
47
47
47
47
47
47
B
A
C245
100/50V
4747IRF640
47
47
47
47
0.05/5W
Q161
IRF640
Q162
IRF640
R168
0.05/5W
Q261
Q262
IRF640
R268
R173
330
100/50V
H.VCC
C171
Q163
IRF640
Q164
IRF640
Q263
IRF640
Q264
IRF640
R167
0.05/5W
R174
43K
R183
100K
IRF640
IRF640
Q265
IRF640
Q266
IRF640
Q165
Q166
C172
102P
R176
100K
R175
82K
R295
100
1N4148
R178
1K
R177
390
Q173
KTA1023Y
Q172
KTC1027Y
Q271
KTA1023Y
D242
R195
100
VEE
R271
330
R172
Q171
KTA1023Y
1K
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
C144
Q148
Q149
C149
100/16V
Q248
A1220Y
100/16V
C146
100P
C147
100P
C148
C246
100P
Q249
A1220Y
C247
100P
C249
104P
R151
22KF
5P
C248
5P
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
C142R145
104P100K
C242
104P
Q152
C2690Y
Q252
C2690Y
R142
Q145
KTC1027Y
R146
510
R149
22
R242
Q245
KTC1027Y
R246
510
R249
22
330
330
R143
330
5.6KF
R170
10K
R270
10K
R241
5.6KF
R141
4.7/50V
+15V
Q142 Q143
KTA1023Y KTA1023Y
C119
4.7/50V
R180
C120
100P
22KF
-15V
Q150
J108
Q250
J108
C220 R267
R280
100P 0.05/5W
22KF
C219
R144
360
R243
330
R244
360
KTC1027Y
Q144
KTC1027Y
Q146
KTC1027Y
Q242 Q243
KTA1023Y KTA1023Y
Q244
Q246
KTC1027Y
R245
100K
C190
330/16V
2
0V
JSS2319
SW101A
LPF
FLAT
6
HPF
R133
R132R131
22K22K
SW101B
JSS2319
LPF
HPF
C214
100K
7
R233
100K
C114
2.2/50V
MUTE
2
0V
2.2/50V
R231 R232
22K 22K
DE
F
G
2-3
Page 6
KS-AX7700
R
7
K
K
1
5
Power section
CCFL-INVERTER PCBOARD
5
Q701
GND
Q803
V-IN
R804
200
C803 D801
103P 1N5241
C2690A
4
L801
CL-113
C804
104P
R801
1.5K/0.5W
Q802
C1027Y
Q801
C1027Y
C801
473/100V
R717
4.7K
T02
CHT-100
C717
47/16V
100/16V
4.7M/0.5W
4.7M/0.5W
C731
R802
R803
C802
18P/3KV
R720
10K
OUT1
CCFL L=190m/m
Q706
KTA1266GR
R725
C701
10/25V
R715
140KF
C715
R716
104P
51KF
16 15 14 13 12 1110 9
U701
10
TL494CN
87654321
KTA1023Y
R703
4.7K
R701
68/0.5W
R702
4.7K
Q702
KTC3198GR
R704
4.7K
D710
1N4148
R743
220/0.5W
3
Q705
KTA1266GR
R718
4.7K
C716
334(M)"TL"
C718R719
220/16V10K
TH01
50KTH
R740
47K
2
CCFL+12V
CCFL BLOCK
Q707
LOADINVERTER
KTC3198BL
C720
104P
R726D704
9101N4148
R731R730
22K1K
R732C721
33K10/25V
C740
102(S)
VR701
C722R733Q708
47/25V15KKTA1268GR
R741
24KF
2K
C741
47/25V
R750 R751
27K 12K
R734
15K
R742
220/0.5W
Q710
KTC3198GR
PROTECTION
D711
1N4148
R
1.
1
2-4
A
BC
D
Page 7
R791
Q790
2.2/0.5W
Q701
R701
68/0.5W
KTA1023Y
R702
4.7K
R703
4.7K
Q702 C868
KTC3198GR 0
R705
10K
D702
1N4004
C
E
TIP117
B
R792
2.2K
F01
C862
104P
CL-900A
C861
223P
L701
D701
1N5404
25AX2
F02
KS-AX7700
CON01
CCFL+12V
C860
X
P01
TMN005-01
+12V D.C
REM
GND
C705C706
47/25V104P
C741
47/25V
50 R751
7K 12K
220/0.5W
R742
220/0.5W
Q710
KTC3198GR
D710
1N4148
R743
D711
1N4148
R704
4.7K
Q730
KTA1266GR
Q731
KTA1266GR
R752
1.5K
R744
R754
1K
1K
LED01
KLR-124E
R747
100
R746
100
R745
100
R755
100
R756
100
R757
100
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)
C850
C724
104P3T
4
3
C781
10/50V
R852
22K
R850
4.7K
C788
104P
C787
104P
Q850
KTA1023Y
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
C769
C770
OCI
OCI
47/25V
C763
C725
10/100V
2200/50V
2200/50V
C771
C772
C726
104P
C773
105(M)
C774
105(M)
C765
104P
C766
104P
H.VCC
VCC
VEE
+15V
-15V
MUTE
D723
PR1504
D751
YG225D2
D752
YG225D2
D731
PR1504x4
D732
D734
D735
C780
22P
D722
PR1504
10/100V
C727
10/100V
R760
T1
100/2W
49PHI
BEAD
C863
103(M)
15T
5T
5T
15T
103(M)
(0.7PHIX5)
C864
C760
BEAD
222(M)
ADD FERRITE BEAD 2POINT
D770
R780
1N4148
220K
D771
R781
1N4148
10K
C728
R782
4.7M
D850
1N4148
L721
47uH
R853
4.7K
L702
2
CL-1112
C767
1000/50V
C768
1000/50V
1
CL-1112
560/3W
560/3W
Q780
J108
R382
C761
2.2/50V
C762
4.7/50V
R182
10/16V
W01
C867
104P
50m/m
C792
473P
34
5K
PROTECTION
R790 C791
10K 105(M)
C790
473P
C866C865
XX
DE
F
G
2-5
Page 8
KS-AX7700
Printed circuit boards
Main board (forward side)
R191
C191
5
L102
R169
L202
C705
C781
4
3
2
1
TH01
D751
D752
R777
R778
VCC
VEE
R-OUT
Q162
R168 R167
Q166 Q164
SSS SSSDDD DDDGGG GGG
ECB
ECB
Q152
Q165
Q161 Q163
R146
R181
Q790
B.K RED
G
Q780
C769
R165
R149
R148
R186
P02
C291
R291
R269
R792
C731
R717
R718
C706
R719
R720
C716
+12V
CON01
Q705
D704
C780
R782
R726
D770
D771
R780
R781
C773
C774
C772
Q176
R395
R163
R185
R187
Q174
D170
D142
R172
R177
R179
Q171
D143
R143
R171
R195
R162
R144
C142
R161
R
Q142
ECB
ECB
Q148
C146
Q149
R164
C147
ECB
ECB
Q144
Q146
R145
R147
D151
R150
C143
C161
C160
R160
C163
+
GRAYGRAY-B.K
FH01
1
0
J1
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
C148
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
Q731
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
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
R754
C863
C864
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
C709
C861
C862
4
4
T01
8
8
C760
L702
SUB1
SUB1
C124
C245
R251
C249
LEVELCROSSOVER
LEVELCROSSOVER
R270
R241
R233
C121
C201
R203
R288
R266
C263
R201
WHITE-B.K
C202
L
C262
--+
C702
2,3
2,3
C750C751
PAM37801
C768
1
1
2
2
16x20
4
4
3
3
16x20
C767
D242
R272
C244
R242
R243
D243
R252
Q242
Q243
C248
R254
C247
Q245
R280
C220
Q250
R250
C219
C785
C261
C260
R260
U704
WHITE
6,7
6,7
C726
R173
R174
C171
Q271
ECB
ECB
ECB
ECB
Q249
Q244
R247
D251
C243
C766
Q248
C345
H.VCC
C727
D723
C246
R264
P01
C860
D701
C752
Q747
C753
VEE
L-OUT
R175
Q172
R295
Q246
R244
R747
1
1
R746
R745
R755
5
5
R756
C865
C866
R790
D722
C728
C725
R722
R183
C172
R271
R262
R248
R245
R281
C765
C787
R182
R757
C790
C791
C761
C792
D734
D731
D735
L721
Q850
R850
D732
C724
R263
R285
R287
R249
R246
C242
R261
R286
C190
C763
C762
Q851
R851
Q262 Q261Q746 Q745 Q755 Q756 Q757
Q264
Q266
R267R268
Q252
Q265
Q263
C786
U703
C788
R382
C868
C867
W01
D850
R852
R853 R854
C850
GGGGGG DDDDDD SS SSSS
ECB
ECB
2-6
A
BC
D
Page 9
RUBBER2
C868
R854
R853
KS-AX7700
Main board (reverse side)
FH01
P02
LED01
C709
1
RED
2
N.T
L702
L701
BJ101
Q710
R752
D702
Q730
R703 R741
C740
VR701
C701
U701
R732
D710
R715
C721
Q708
R701
R716
C718
R731
R733
R702
Q701
C861
C862
4
C741
Q731
D711
R742
R743
R754
R744
C863
R760
8
C864
C760
RUBBER3
4
N.T
3
RED
SUB1
SUB2
R751
C715
R740
R730
C722
Q702
C720
Q706
C717
R791
R734
R704
R750
R725
Q707
R781
C771
C770
R720
R705
C731
C291
Q705
R780
R718
D704
R269
R726
D771
R291
R719
C773
R792
C774
R717
D770
C716
C780
L202
VCC
VEE
R782
Q780
C706
Q790
REDB.K
CON01
C769
R777
R778
L102
R169
C705
C781
C772
Q747
C860
R747
R746
R745
C753
C752
1
P01
C751
+
C702
D701
C750
2,3
T01
SDG SDG SDGSDG SDG SDG
R755
5
Q756 Q755 Q746Q745
R756
C866
C790
R757
Q757
C867
C791
C792
C850
Q851
D735
D732
R851
C761
L721
R850
W01
D734
D731
D850R852
C762
R790
C865
Q850
H.VCC
C727
C724
D722
C728
R722
6,7
C768
D723
C767
C725
C726
C191
R191
RUBBER1
TH01
D751 D752
H-VCC
SDG
RUBBER4
Q262
GDSSDG
Q266
Q252
ECB
DGS
Q265 Q264
GDS
Q263
SDG
+
Q261
U703
C788
R382
R268
R267
R286
C786
R182
+
C765
R246
C242
R263
R249
R285
R287
R261
R183
R262
R248
C190
C763
C172
R245
R271
R281
C787
R175
Q172
Q246
R244
R295
C246
R264
Q271
Q249
C243
U704
R174
Q248
R247
R173
C244
L-F.OUT
R-F.OUT
R272
D242
+15V
-15V
C245
+
C171
R252
R243
ECB
Q243
Q242
Q245
ECB
C247
C220
Q244
D251
R250
C345
C766
C261
+
C785
WHITE
D243
C248
R254
R280
C219
C262
L+
R242
R251
C249
Q250
R270
R233
R241
C260
R260
L-
WHITE-B.K
C263
R-IN
L-IN
GND
GND
R288
C202
L-F.OUT
R-F.OUT
+15V
C123
-15V
GND
R-IN
L-IN
C124
BOOST(0-12dB)
LEVELCROSSOVER
2-GND
C205
C121
R206
C206
R266
C201
R205
R203
R202
C204
L+
L+
R201
RCA01
GG
L-F.IN
R-F.IN
+15V
-15V
GND
R-OUT
L-OUT
FLAT/LPF/HPF
C105
C122
R105
C104
+R
DE
L-F.IN
R-F.IN
+15V
-15V
GND
R-OUT
L-OUT
R102
R151
R106
U101
R+
F
R265
C173
R178
Q173
R176
C145
R142 R154
C148
C149
Q150
(50-250Hz 12dB)
R170
R141
R133
C106
C101
R103
R101
C144
Q145
R180
R152
C119
Q175
C102
R188
Q174
D143
Q143
C120
R150
R166
C162
R177
R143
Q176
Q142
C147
Q144
D151
GRAY
R179
Q171
Q149
C143
R+
R395
D170
R195
ECB
ECB
Q146
C161
R-
GRAY-B.K
R187
Q148
R164
R145
R147
R160
C163
R172 R171
C146
R144
C160
C142
R161
R185
D142 R165
R186
R162
R163
R146
R148R149
R181
R168
R167
Q161Q163Q166 Q165Q152Q164Q162
G
ECB
SDGSDGSDGSDSGDGSDG
RUBBER5
2-7
Page 10
KS-AX7700
Sub board (forward side) Sub board (reverse side)
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
R140
R238
C114
R232
C113
R131
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
2-8
A
BC
D
Page 11
CCFL board
R802
R802
R804
KS-AX7700
+12V(RED)
GND(BLACK)
C803
D801
BCE
Q803
Q802
CFL01
L801
PAS12601
R801
J101
C805
C801
C804
REV : 0
Q801
T02
C802
DE
F
G
2-9
Page 12
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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