Page 1
KS-FX771
SCHEMATIC DIAGRAMS
CASSETTE RECEIVER
KS-FX771
CD-ROM No.SML200306
Area Suffix
Contents
Block diagram
Standard schematic diagrams
Printed circuit boards
U ------------------- Other Areas
SOUND
ATT
U
SOURCE
F
R
D
VOL
VOL
2-1
2-2
2-5 to 6
COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD.
No.49847SCH
2003/06
Page 2
KS-FX771
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.
2-4
Page 3
Block diagram
5
KS-FX771
SUB
MOTOR
SWITCH
TAPE END.STANDBY
MAIN
MOTOR
HEAD
CN403
4
TO CD CHANGER
CP801 CP901
SCK
SI/SO
3
IC801
JVC BUS
CH.L
CH.R
JBUSSI
JBUSSO
JBUSIO
2
J1
AM
FM
JBUSSCK
TU1
AM/FM TUNER PACK
SD/ST
IFREQ,S.MATER
IFCONT,IFC
MONO,FMOSC
Main amp section
1
TO SPEAKER
CONNECTOR TO REAR LINE OUT
LFOUT
LFOUT
LROUT+
LROUT-
+
-
J321
OUTLR
OUTRR
IC301
WER AMP
PO
OUTLR
OUTRR
OUTLF
OUTRF
IC161
E.VOLUME
TU.L
TU.R
.
TAPE.L
TAPE.R
IC701
MAIN SYSTEM CONTROL CPU
F/R
MODE
STANDBY
FF/REW
MOTOR
SUBMO
SUBMO
TAPEIN
DOLBY
MS
REEL
KEY 0 – 2
CP701
+
-
CJ701
CN401
CN601
MOTOR
TAPEIN
MODE
STANDBY
PHOTO
REEL
F/R
MSOUT
LCH
RCH
FF/REW
SUBMO+
SUBMO-
EN601
ROTARY
ENCODER
ENC1,ENC2
LCDDA
LCDCL
LCDCE
CN402
SUBMO+
SUBMO-
KEY0 to KEY2
IC601
LCD
DRIVER
FWD-L
FWD-R
REW-L
REW-R
IC401
PB EQ
IC402
DC MOTOR DRIVER
Head amp section
IC602
REMOTE
CONTROL
KEY MTRIX
S601 to S617
SENSOR
REMOCON
COM1 to COM3
S1 to S50
LCD1
AB CD E F G
2-1
Page 4
Standard schematic diagrams
Main amp section
TU1
QAU0281-001
5
4
3
2
1
QNB0100-002
QGB1214J1-18S
QNZ0605-001
J1
CP701
To
Head amp section CN401
CJ701
To
LCD & Key control section CN601
UDZS6.2B-X
D705
QNZ0095-001
R811
6.8k
CP801
UDZS6.2B-X
UDZS6.2B-X
D706
D707
R812
2.4k
UDZS6.2B-X
UDZS6.2B-X
D708
D709
R813
2.4k
UDZS6.2B-X
D710
L1
4.7
1SS355-X
D1
R31 R 34
1k 10k
R32
1k
0.1/50
0.1/50
C32
C31
2SD1781K/QR/-X
REMOCON
UDZS6.2B-X
UDZS6.2B-X
UDZS6.2B-X
D711
D712
D713
R801
R802
R803
6.8k
R814
CH.R
A.GND
CH.L
Q32
TAPEIN
SUBMO+
SUBMO-
TAPE.L
TAPE.R
FF/REW
ENC1
ENC2
LCDCE
LCDDA
LCDCL
KEY2
KEY1
KEY0
0.001
STDBY
A.GND
DOLBY
MOTOR
R804
1SS355-X
D2
R33
C33
1k
2.2/50
C34
Q31
R35
MODE
REEL
MS
F/R
100k
100k
100
330k
HD74HC126FP-X
1.5k
UDZS6.2B-X
D715
PCNT14V
C971
C801
R809
IC801
220/10
C35
100K
R752
UDZS9.1B-X
D31
10V
9V
470p
0.1
C706
10/16
10
C2
R1
Q1
D4
R36D32
470
1SS355-X
PCNT14V
0.047
10K
0.022
C4
R2
1SS355-X
R4
2.2k
750
R753
D753
SLR-56MC3F
D3
1SS355-X
ACC5V
ILL10V
PCNT14V
MEMORY
PCNT14V
100
R807
2SB709A/R/-X
10k
R5
Vdd5V
330k
R805
KS-FX771
2.2k
R723
4.7k
R731
JBUS.INT
LCDCE
2.2k
R722
4.7k
R732
REMOCON
A.GND
IC161
1.2K1.2K
R164R174
TEA6320T-X
CH.L
R163
3.9k
A.GND
TAPE.L
TU.L
TU.R
R173
3.9k
TAPE.R
CH.R
LCDCL
LCDDA
JBUS.IO
JBUS.SO
JBUS.SI
JBUS.SCK
2.2k
4.7k
4.7k
4.7k
4.7k
R721
R720
R719
R718
R717
10k
2.2k
R734
R738
DOLBY
BAND
D.GND
10k
R735
KEY2
S.METER
C162
C172
1/50
C195
1/50
22p
C702
QAX0406-001Z
C163
1/50
C173
1/50
47/16
C196
27p
X701
C701
D704
1SS355-X
10k
10k
R736
R737
R707
R708
R709
R710
R711
R750
KEY0
KEY1
1/50
6.8K
R91
R81
R6
82
10/16
C1
0.01
C12
Q2
R3
10k
1k
Q3
UN2211-X
FMOSC
BAND
vdd5V
JBUS.SI
JBUS.SO
JBUS.IO
JBUS.INT
R810
100k
JBUS.SCK
22k
R808
100k
R806
10k
0.018
0.018
120p
C8
R7
C81
C91
R10
6.8
IFC
TUNER9V
FF/REW
IFREQ
MONO
IFCCONT
S702
0.01
10k
C6
R13
Q5
UN2211-X
IFREQEOIFCCONT
47k
R749
QSW0451-001
C14
56p
Q4
R8R9
8.2k
0.001
UN2211-X
22k
R701
R714
R713
R712
R702
R703
R704
R705
R744
R745
C10
C13
220/10
S.METER
SD/ST
MONO
TUNER.BUS
IC701
LC72366-9B77
D701
1SS355-X
D702
1SS355-X
D703
1SS355-X
R727
47k
R728
2.2k
R729
2.2k
47k
47k
56k
47k
47k
4.7k
4.7k
4.7k
47K
47K
Q701
2SC2412K/R/-X
C92
1/50
6.8K
C82
10K
10K
1500P
1500P
0.1/50
C9
C93
R82
R92
C83
C720
100p
R706
4.7k
C709
0.1
REEL
MOTOR
SUBMO+
SUBMO-
TAPEIN
STDBY
EVOLCLK
EVOLDA
TU.R
TU.L
3.3k
3.3k
3.3k
2.2k
R724
R725
R739
R748
2.2k
2.2k
10k
10k
R743
R730
R741
R742
MS
MODE
F/R
ENC1
ENC2
SD/ST
S701
QSW0451-001
C174 C164
0.0082 0.0082
22k 22k
R171 R161
100/10
C705
0.22
C704
100/6.3
47k
R716
C703
10/16
47k
4.7k
47k
47k
47k
68K
KS-FX771
R162
C167
C168
0.033
0.15
C177
C175 C165
0.15
R172
2.2k 2.2k
C178
C176 C166
0.22 0.22
0.033
EO
FMOSC
PCNT5V
IFC
CJ321
QNN0519-001
IC301
C318
0.1
QQR0703-001
L901
R901
R902
1k
C901
2200/16
D901
1N5401-F64
100
6.8k
C913
C909
D904
LA4743K
C308
470P
C307
C371
470P
10/16
0.022
C301
C304
C902
10/16
R903
12K
0.22
0.22
R910
10k
D906
4.7/25
22/16
C315
C302
C317
C316
0.1
0.1
CP981
QNZ0611-001
QAM0013-005
QMFZ047-150-T
R909
UN2211-X
2SA1855/RST
1K
Q906
Q901
C362
0.022
C361
0.022
C322
0.22
C321
D310
1SS355-X
Q782
UN2111-X
47/16
C782
D782
47k
R908
R892
UN2211-X
Q891
C915
470P
2SC2412K/R/-X
1SS355-X
1SS355-X
47k
R904
1k
R905
C912
2200/6.3
Q902
UN2211-X
47k
R979
D909
C342
0.22
390p
UDZS11B-X
1SS355-X
Q977
D908
C332
C352
0.22
0.22
C341
C351
C331
390p
390p
390p
Q781
UN2111-X
220/10
D781
1SS355-X
C781
PCNT5V
9V
PCNT5V
PCNT5V
1k
47k
R891
R882
D892
47k
Q881
UN2211-X
D891
1SS355-X
Q976
R978
2SA1037AK/RS/-X
27k
IC901
AN80T05
10/16
10/16
10/16
10/16
C914
C905
C907
C906
Q907
R305
4.7k
R302
15K
UN2211-X
C881
R977
R303
Q301
R881
4.7k
22/16
R976
56K
82K
RB160M-30-X
2SA1037AK/RS/-X
4.7/25
C303
C319
0.1
2.7K
D907
D903
R912
TAPE signal
Rear signal
R354
R353
1k
1k
1k
1k
RB160M-30-X
D241
22/16
0.1
C911
R906
1SS355-X
47
47k
R344
R334
R324
R331
R351
R341
R321
Q351Q341Q331 Q321
C244
0.22
0.33
C910
100
100
100
100
27k
27k
27k
27k
2SD1781K/QR/-X
R325
D331
2.2k
1SS355-X
R355
D321
2.2k
1SS355-X
R345
D351
2.2k
1SS355-X
R335
D341
2.2k
1SS355-X
Q905
220
R249
56k
R248
D243
UDZS5.1B-X
Q930
R930
47k
QSQ1A11-V06Z
S930
R931
22k
R343
R333
R323
47k
47k
R165
R166
C182
C181
2.2/50
2.2/50
C191
C192
2.2/50
2.2/50
0.0056 0.0056
C197
47k
R175
9V
PCNT14V
ILL10V
TUNER9V
10V
Vdd5V
9V
Vdd5V
PCNT5V
ACC5V
MEMORY
47k
C198
R176
0.01
100/10
9V
R243
R245R247
180k
12k1k
180k
180k
C241
R241
R242
1/50
KIA7810PI
R911
100
2SD1781K/QR/-X
C243 D242
Q241
0.047
47
R246
R244
22k
C242
IC902
L902
UN2111-X
Q903
1k
R907
UN2211-X
Q904
TUNER signal
FRONT signal
CD changer signal
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
2-2
HAB C DE FG
Page 5
KS-FX771
LCD & Key control section
5
0.022
EN601
QSWO793-001
100
R681
C681
0.022
LCDCE
LCDDA
LCDCL
KEY2
KEY1
KEY0
R670
DIMMER
S33
S32
S31
S30
S29
S28
S27
S26
S25
S24
S23
S22
S21
S20
S19
S18
S17
S16
0
NNZ0087-001
REMOCON
ACC5V
10V
ENC1
ENC2
CN601
To
Main amp section CJ701
IC602
RPM6938-SV4
4
LCD1
S6S7S8S9S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24
S25
S26
S27
S28
S29
S30
S31
S32
S33
S34
S35
S36
S37
S38
S39
S40
S41
S42
S43
S44
S45
S46
S47
S48
S49
510
510
R633
D622D624
LNJ308G81/1-3/X
D623
S50
COM1
COM2
COM3
510
R632
LNJ308G81/1-3/X
LNJ308G81/1-3/X
LNJ308G81/1-3/X
D625
R631
R659
SML-310LT/MN/-X
NSPW310BS/B2RS/
820
D644
390
390
R660
NSPW310BS/B2RS/
D645
R672
0
Q640
2SB815/7/-X
R674
Q641
R673
1K
UN2211-X
R651
2.2k
R652
2.2k
47K
LCDCE
LCDCL
LCDDA
C603
10/6.3
DIMMER
R653
R654
R655
R656
D642
1SS355-X
D643
1SS355-X
R658
180k
D641
C601
0.022
UDZS5.1B-X
10k
10k
10k
10k
S1S2S3S4S5
3
2
R615
R605
1.2K
1.5K
S606
S617
R610 R609
1.2K 910 680
R604
S605
R608
R614 R613
680 560
R602R603
560680910
R607
NSW0124-001X
R606
680560
R612
R601
680
S602S603S604
S608S609S610S611S612
680
S601
S607
KEY2
KEY1
KEY0
S613S614S615S616
R649
D602
R648
1.2K
LNJ308G81/1-3/X
1.2K
R647
1.2K
D601
510
1.2K
R645
R646
D603
D604
LNJ308G81/1-3/X
D605
510
820
R643
R644
D606
LNJ308G81/1-3/X
LNJ308G81/1-3/X
D607
LNJ308G81/1-3/X
R641
820
R642
LNJ308G81/1-3/X
LNJ308G81/1-3/X
510
D609
D611 D610
510
R639
R640
D613
LNJ308G81/1-3/X
D614
LNJ308G81/1-3/X
D615
LNJ308G81/1-3/X
510
510
R637
R638
LNJ308G81/1-3/X
LNJ308G81/1-3/X
LNJ308G81/1-3/X
820
D616
D617
510
820
R635
R636
D619
LNJ308G81/1-3/X
D620
D621
LNJ308G81/1-3/X
R634
LNJ308G81/1-3/X
LNJ308G81/1-3/X
C602
D646
UDZS6.2B-X
10k
R661
C611
0.012
C612
R662
4.7/6.3
S41
S42
S43
S44
S45
S46
S47
S48
S49
S50
R671
DIMMER
0
COM1
COM2
COM3
OSC
CE
CLK
DATA
S1
51k
680p
R657
S2
S3S4S5S6S7
IC601
PT6523LQ
S8
C682
47
S34
S35
S36
S37
S40
S38
S39
S9
S11
S10
S12
S13
S14
S15
1
AB CD E F G
2-3
Page 6
KS-FX771
KS-FX771
Head amp section
Q403
2SB1322/RS/-T
47K
R422
3.3K
UN2211-X
R423
Q402
5
1A3G-T1
D402
CN403
QGF1219F1-10S
R410
680
4
CN402
3
QGA2001C1-06
R411
100k
680P
C401
680p
C411
R401
R412
100K
100K
R402
680P
C412
100K
680P
C402
R415
4.7k
R405
4.7k
R414
R404
5.6k
5.6k
C414
C404
0.1
0.1
0.01
C406
R406
47K
0.18
C403
HA12231FP-X
1/50
C416
R416
2.4K
R403
1.2M
IC401
Q406
UN2211-X
R408
680
100/16
C408
1/50
C405
2.2/50
C407
R407
10K
2.2/50
C417
R417
10K
0.1
C415
R424
D401
MA3047/H/-X
3.3K
LB1641
10/16
C423
IC402
C425
0.01
C424
0.1
R425
33
2
CN401
QGB1214K1-18S
To
Main amp section CP701
TAPE signal
1
2-4
HAB C DE FG
Page 7
Printed circuit boards
Main board
5
KS-FX771
C198
C196
R705
R881
B960
R166
R735
D903
R725
C178
R704
R724
R912
R743
R703
L901
D904
C905
R901
C914
B181
R702
C315
R165
B177
B178
B179
B180
R744
C909
D712
D901
D711
R910
C332
B951
C318
D907
R243
R742
R745
D713
D906
R351
R302
R245
R241
D710
C913
L902
B952
D709
R331
D708
R741
C319
R303
B953
R242
C352
C191
C192
Q241
R732
B940
R911
B946
R729
Q881
R171
R882
B957
B958
C167
R701
R714
R728
C182
R731
C907
R162
R713
C168
C177
R737
C197
R172
R712
IC901
B955
R736
CJ321
C12
R6
R801
R802
R803
Q1
R2
R5
B321
B320
C82
C83
C92
R930
R354
R325
Q782
R91
R706
B30
R353
Q331
B757
R4
R92
R804
D3
R324
D782
C93
R323
Q2
C782
D351
C709
R931
D341
D310
R749
R334
R3
R717
Q781
C705
C701
S930
Q341
R809
C801
B755
C720
X701
R333
R335
C781
R718
CP801
R345
D781
R708
R720
C703
C702
IC801
B759
B965
D704
C704
R719
R716
R810
B743
R811
IC701
R813
R711
R748
R807
R814
R806
B744
R812
B767
B753
R805
Q701
R750
B747
R808
R734
R174
R710
B749
R730
R707
R173
R164
D753
R739
D703
R721
R163
R722
Q891
R709
B750
B954
R723
B746
C173
R753
IC161
D702
C162
B188
R10
CP701
C166
C176
R892
R891
C163
C172
B751
D701
D892
B745
C195
R727
C881
C165
B752
B756
D891
C181
R161
C164
C174
C175
C361
C362
4
3
C31
C32 C33
C9
R35
R32
R33
Q31
B14
D2
D1
TU1
R31
C34
Q32
C81
C91
C6
C10
S702
B18
R343
R344
Q351
Q321
J1
C35
R355
D321
D31
L1
R34
R36
D331
D32
R1
C4
C2
Q3
D4
B17
B16
C1
R81
R82
C8
R7
Q5
R13
R8
R9
Q4
C13
2
Q301
C241
D706
D707
R902
R903
R738
R246
C906
C902
C317
C316
R175
C243
B938
R244
R176
C244
R904
D909
D908
B939
R752
B346
C303
D241
C915
C912
Q930
CP981
Q907
IC902
C706
R249
R247
Q903
D715
C301
R321
C322
C242
Q901
Q906
C910
C911
D705
C341
C321
C971
D242
D243
R977
R341
R248
Q976
C331
C307
R905
R978
CJ701
C308
B950
R305
C342
B949
R907
B948
C304
C901
C302
Q902
Q904
R906
Q905
C351
C371
Q977
R979
IC301
B947
R908
R976
S701
R909
1
AB C
2-5
Page 8
KS-FX771
Front board
Forward side
D625
D603
D604
D601
D605
S607
S613
R649
D606
R648
R606
R607
S608
D602
LCD1
D609
S615
D610
S610 S611
S609
D611
R609
D613
R610
D614
D615
S612
S601
5
IC602
EN601
D607
S614
D645
R601
R602
S616
D644
R603
S606
D616
D619
S617
R615
S602
D624
D620
R605
R604
D623
D617
D622
S603
S605
D621
S604
4
Reverse side
R631
R614
R613
R632
R633
R636
R637
3
Q640
R672
Q641
R635
R638
R639
R673
R634
R674
R671
R670
R659
R660
R652
R651
D641
R653
C603
C601
D643
D642
R658
R657
C602
R655
CN601
R608
R656
R654
R612
R661
R662
R642
C612
D646
R643
C682
R646
R644
IC602
R681
C681
R645
R640
R641
R647
C611
2-6
2
Mecha board
B416
C423
R425
D401
C416
R424
IC402
B406
C425
B415
C424
D402
Q406
R410
R416
R406
C406
C408
R408
Q403
B413
C405
C415
C403
R403
B404
B403
B414
IC401
CN403
C417
R417
B412
B405
R423
R407
C404
C407
CN401
R404
R405
R402
R401
C402
B411
C412
R414 R415
C414
C401
R412
B402
C411
B401
R411
CN402
R422
Q402
1
AB CD
Page 9
< MEMO >
KS-FX771
2-7
Page 10
KS-FX771
VICTOR COMPANY OF JAPAN, LIMITED
AV & MULTIMEDIA COMPANY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
(No.49847SCH)
Printed in Japan
2003/06
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