JVC KD-S641 Quick start guide

SCHEMATIC DIAGRAMS
CD RECEIVER
No.49769SCH
2003/01
COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD.
KD-S641
Contents
Block diagram
Standard schematic diagrams
Printed circuit boards
2-1
2-2
2-5,6
CD-ROM No.SML200301
KD-S641
Area suffix
E --------------------- Continental Europe
SEL
LOU D
DISP
SS M
SCMMODE
7 9 10 12
RN D 11 RP T 8
MO
AM
CD
FM

KD-S641
!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.
Safety precaution
!Please use enough caution not to see the beam directly or touch it in case of an
adjustment or operation check.

KD-S641
2-1
AB CD E F G
1
2
3
4
5
POSITION SET
SWITCH
LOAD&FEED
MOTOR
SPINDLE
MOTOR
SW1, SW2
PICK UP
PSW
SW1, SW2
CN501
IC541
SERVO
BTL
DRIVER
IC561
DSP
&
DAC
IC501
RF AMP
IC151
L.P.F.
VF1,VF2,
VT1,VT2,
MD,LD
TRV,TVD,
ECM,ECS,
KICK,TRD,FOD CD.SENSE
/CD.RESET
STATUS
SUBQ,SQCK
BLKCK,/TLOCK
/FLOCK,MLD
MDATA,MCLK
TBAL
FBAL
FE,TE
TRCRS
VDET
LDON
ARF
BDO
OFTR
/RFDET
RFENV
OUT L
OUT R
CD LCH
CD RCH
CJ601
IC602
REMOCON
S601~S620
KEY MATRIX
KEY0
KEY1
KEY2
REMOCON
IC601
LCD
DRIVER
LCD1
CN801
TU701
FM/AM
TUNER
IC801
MICOM
IC301
E.VOL
FM/AM
FM.OSC
IFC
AGC
S.METER
SD/ST
MONO
EQ
IC321
POWER
AMP
IC901
REGULATOR
SPK
BATTERY
EACH BLOCK
TU.LCH
TU.RCH
OUT LF
OUT RF
OUT LR
OUT RR
LRO
RRO
CD.LCH
CD.RCH
CJ321
LINE OUT
LF+, LF-
RF+, RF-
LR+, LR-
RR+, RR-
COM1
COM2
COM3
S1 ~ S48
LCD.CLK
LCD.SO
LCD.CE
SDA
SCL
CJ701
ANT
SW1,SW2,PSW
LM,MSW
FEED+
FEED-
SPINDLE+
SPINDLE-
VF1,VF2,
VT1,VT2,
LD,MD,
TRACKING+
TRACKING-
FOCUS+
FOCUS-
SPINDLE+
SPINDLE-
FEED+
FEED-
TRACKING+
TRACKING-
FOCUS+
FOCUS-
NOT USED
Block diagram
CN901

KD-S641
2-2
KD-S641
HAB C DE FG
1
2
3
4
5
To
CD servo &
control section
To
LCD & Key control
section CJ601
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
Rear signal
Tuner signal
Front signal
CD signal
Standard schematic diagrams
Main amplifier section
R828
C824
R815
R816
C434
Q731
X801
C803
C804
CJ701
R832
R834
R831
D902
D801
C802
D332
C807
CN901
IC901
R907
R827
R811
C901
R704
Q321
CJ321
R823
R702
Q902
R826
R825
C916
C329
C331
C330
C335
R323
R807
D901
C435
C405
C305
C404
C304
C328
C321
R401
R301
R814
R307
R308
R408
R407
Q793
C427
Q332
R333
IC801
R812
R840
R841
C334
Q792
R842
C801
Q432
R321
D333
R322
D803
C902
Q702
R845
R336
R433
L701
C731
CN801
Q861
Q732
Q903
D903
R201
R101
TU701
R436
R434
IC321
D805
D804
D802
D321
C332
F1
C333
C433
C432
R808
R902
Q791
R703
C327
Q701
IC301
R791
C732
R736 R733
R735
R701
R334
R829
R809
D869
R862
D824
R822
D904
C201
R833 R835
C862
R796
D792
C909
C718
R906
R910
C712
R798
R911
R909
R803
R904
R905
R901
R903
C319
R817
L801
R801
C906
C910
R830
C713
R818
C716
C904
C908
C715
C914
C915
C903
C403
C406 C306
C303
C402 C302
C307
C311
C407
C308
C312
R402 R302
C310
R304 R303
R404
R403
R799
C408
R793
R725
C725
C309
C101
R794
C717
D868
C320
R795
R843
R797
R844
D905
C714
C701
L901
C703
C720
C702
C905
D861
C709 C710
D866
C861
R804
C733
R202 R102
D810
D867
D701 D702
R908
C420C419
D791
D823
D825
D822
D826
D827 D828
D731
C821
C822
D821
R705
C907
C823
C911
R805
R792
R734
R708
C711
R861
R836
R813
47k
220p
47k
47k
1/50
2SC1623/5-6/-X
QAX0406-001Z
22p
33p
QNB0100-002
22k
22k
4.7k
SB10-03A3-T2
1SS133-T2
0.01
1SS355-X
10/16
HA13164A
39k
47k
3.3k
2200/16
UN2211-X
47k
2SC1623/5-6/-X
47k
47k
2.2/50
4.7/25
0.022
0.022
1/50
1k
47k
1N5401-F64
1/50
0.033
0.033
0.22
0.22
47/16
100/16
22k
22k
47k
27k
27k
27k
27k
UN2211-X
22/16
2SD1781K/QR/-X
1k
JES01-9B42
3.3k
47k
47k
1/50
2SA812/5-6/-X
47k
220/6.3
2SD1781K/QR/-X
47k
1SS355-X
470
1SS133-T2
0.01
DTC144EKA-X
0
2.2k
1k
4.7u
2.2/50
VMC0334-001
UN2111-X
2SC1623/5-6/-X
2SA812/5-6/-X
1SS133-T2
470
470
QAU0281-001
2.2k
100
LA4743K
1SS133-T2
1SS133-T2
1SS133-T2
1SS133-T2
0.1
QMFZ047-150-T
0.1
0.1
0.1
1k
1k
2SB1197K/QR/-X
1k
4.7/25
UN2211-X
TEA6320T-X
10k
0.001
1k 10k
1.5k
1k
100
47k
10k
1SS355-X
470
UDZS6.2B-X
2.2k
RB160M-30-X
1/50
4.7k 4.7k
0.082
15
1SS355-X
100/10
0.022
4.7k
47k
0.1/50
22k
47k
27k
3.3k
100K
4.7k
9.1k
4.7k
220p
4.7k
4.7u
10K
0.1
0.01
22k
100p
47k
22/16
100/10
150p
0.1
2.2
22/16
0.18
0.0056
0.0056
0.18
0.0082 0.0082
4.7/25
100/10
4.7/25
4.7/25
47/16
2.2k 2.2k
0.01
47k 47k
47k
47k
47k
4.7/25
10k
0.01
100/10
1/50
2.2k
220p
1SS355-X
220p
15
0
10
0
RB160M-30-X
47/10
QQR1378-001
0.1/50
220/10 0.1/50
22/16
MTZJ4.7B-T2
0.022 0.022
1SS355-X
220/6.3
3.3k
220/10
7.5K 7.5K
1SS355-X
1SS355-X
1SS133-T2 1SS133-T2
68k
220p220p
1SS355-X
UDZS6.2B-X
UDZS6.2B-X
UDZS6.2B-X
UDZS6.2B-X UDZS6.2B-X UDZS6.2B-X
MTZJ10B-T2
0.1
0.1
UDZS6.2B-X
10k
0.01
0.1
220/10
3.3k
1k
470
8.2k
0.01
470
47k
47k
RF+
IFC
SW5V
MSW
TU.RCH
RR+
VDD
CD.RESET
LR+
PSW
LCD.CE
TU.LCH
CD8V
SDA
DETACH
R5V
LF+
DETACH
CD.RCH
RF-
RR-
LR-
LF-
LM
SCL
EO
MUTE
FM.OSC
CD.LCH
9V
LRO
RRO
CD8V
STATUS
MCLK
MDATA
MCLK
MLD
CD.SENSE
LM
SQCK
SUBQ
SW1
CD.RESET
SW2
TLOCK
FLOCK
BLKCK
R5V
MDATA
MLD
REMOCON
LCD.SCK
LCD.SO
KEY0
KEY1
KEY2
ILL_10V
SDA
SCL
AGC
SW2
MONO
PSW
SQCK
ILL_10V
LCD.CE
LCD.SCK
CD.SENSE STATUS
MSW
EO
S.METER
IFC
SUBQ
SW1
LCD.SO
SW5V
TU.RCH
LF+
SD/ST
MUTE
CD.RCH
KEY2
CD.LCH
LRO
LR+ LF-
ILL_10V
LR-
RF-
SD/ST
RR+
RRO
RR-
TU.LCH
REMOCON
KEY1
MICON.MUTE
9V
S.METER
BLKCK
MONO TLOCK
PS2 FLOCK
FM/AM AGC
MICON.MUTE
KEY0
FM.OSC
RF+
9V
FM/AM

KD-S641
2-3
AB CD E F G
1
2
3
4
5
CD signal
CD servo control section
To Main amplifier section
IC501
IC541
C252
R152
R560
C253
L501
R151
C255
RF
X561
R251
R153
ARF
C552
C540
C503
IC151
R155
L562
IC561
C513
C527
R550
VREF
C526
R525 C506
R504
Q541
R517
R516
R557
R596
R512
R513
C541
Q501
C520
C519
C523
C522
C521
R508
R506
C563
C551
R573
C573
D551
C570
R255
C155
C574
R253
R252
R154 R156
R256
R254
C153
FE TE
CN501
C152
R509
C543
C524
C525
R569
R580
R581
R549
R503
C530
R519
R577
R552
L561
R553
R570
R554 R551
C504
C251
R507
R576
R524
C151
C579
C576
C555
R502
C508
R501
C516
C505
C507
C509 C510 C511
C512
C514
C518
R511 R510
R505
C564 C565
C568
C566
R579
C556
C571
C557
R575
C558
R571
R574
C256
C572
C567
C577 C561
C528
C529
R518
C502
R568 R567 R564 R563 R562 R561
C501
C562
C515
R541 R542
R544
R546
R545
R547
R543
R548
C542
AN8806SB-W
LA6589H-X
4.7/25
12k
100
150p
4.7U
18k
47/6.3
TP
QAX0714-001Z
18k
27k
TP
0.01
68p
68p
NJM4565M-WE
1.5k
4.7U
MN6627482WA
330p
0.022
11K
TP
3p
910 150p
2k
2SA1706/ST/-T
12k
12k
150
8.2k
56k
56k
22/16
2SA1706/ST/-T
47p
0.047
0.022
0.022
560p
39k
22k
0.001
220/10
33k
220/10
1A3G-T1
0.022
1.5k
47/6.3
0.01
27k
12k
22k 22k
22k
22k
150p
BT
BT
TP TP
GND
GND
GND
QGB2027M4-22S
4.7/25
15k
0.033
0.001
0.001
1k
220k
0
1k
68p
1M
100k
18k
4.7U
0
1k
51k 2k
100/10
0.001
8.2k
0
2k
0.001
0.001
0.0015
0.047
22
1/50
22
100/10
0.01
0.1
100p
0.027
0.0047
0.01
0.1
0.22
270k 150k
220k
0.27
0.1
0.01
0.47
1k
0.047
0.01
0.047
220
0.047
33k
220
100/10
100/10
100/10
0.1 0.01
0.0018
0.0012
BT
BT
GND
GND
IC2
8.2k
GND
100/10
1k 1k
1k 1k 1k
1k
0.01
0.01
0.01
6.8k
560 5.1k
12k 3.3k
220k
47k
5.6k
0.0033
CD8V
FEED-
ARF
9V
FEED+
FEED-
PSW
SPINDLE+
MD
VF2
VF1
VT2
GND
VT1
LD
SPINDLE-
FEED+
GND
RFENV
VF1
SW2
SW1
FOCUS-
FOCUS+
PSW
VF2
GND
VCC
SW1
VT2
SW2
VT1
PSW
VF1
SPINDLE-
TLOCK
VF2
VR
SW1
SPINDLE+
LD
VREF
OFTR
FOCUS-
MD
FOCUS+
TRACKING-
TRACKING+
FEED-
FEED+
SPINDLE+
SW1
SPINDLE-
VCC
VR
FOD
SW2
LD
TRD
KICK
PSW
ECS
ECM
TVD
TRV
TRACKING+
FBAL
TBAL
MD
FE
TE
RFENV
VDET
VCC
TRCRS
TRACKING-
TRACKING+
FOCUS+ TRACKING-
FOCUS-
LD
RFDET
BDO
LDON
VT2
VT1
VCC
GND
SQCK
SW2
MSW
MCLK
LM
CD.RESET
STATUS
SUBQ
MD
MDATA
FLOCK
CD.SENSE
MLD
BLKCK
CD.LCH
CD.RCH
VR
VF1
VREF
VT1
GND
VT2
VF2
CD.SENSE
LM
VDET
CD.RESET
TRV
TRD
LDON
ARF
BDO
TBAL
TRCRS
TVD
KICK
FOD
TE
FE
FBAL ECS
STATUS
ECM
SUBQ SQCK
TLOCK
MLD
MDATA
MCLK
BLKCK
MSW
TRACKING+ TRACKING- FOCUS- FOCUS+
OFTR
RFDET
SPINDLE+ SPINDLE- FEED- FEED+
FLOCK

KD-S641
2-4
KD-S641
HAB C DE FG
1
2
3
4
5
LCD & Key control section
To
Main amplifier
section CN801
R658
R653
C603
D642
IC602
R661
R662
C612
C611
IC601
CJ601
D643
S601
S620
R652
R657
C601
C602
R654
R655
R656
R617
S603
S608
S614
S602S604S605S606
S609S610S611S612S613
S615S616S617
S618S619
R614 R613
R615
R616
R606R607R611 R610 R609 R608
R601R602R603R604R605
R651
S607
R612
D641
LCD1
D644
D608
D603
D604
D605 D617
R732
R731
D616
D620
R632 R634
D615
D601
D614
D613
D612
D602
D611 D610
D609
R643 R642
D607
D619 D618
R641 R635 R633 R636 R638 R640 R637 R639
D606
R644 R645
R631
D731 D732
D645
180k
10k
10/6.3
1SS355-X
RPM6938-SV4
10k
470
4.7/6.3
0.012
VMC0355-001
1SS355-X
2.2k
51k
0.022
680P
10k
10k
10k
1.5k 680 5609101.2k
680
560
1.5k 1.2k 910 680
680
560
6809101.2k
2.2k
680
UDZS5.6B-X
QLD0210-002
UDZS6.2B-X
3
LOUD
SEL
DISP
AM
680 680
CD
POWER
2.2k 1k FM
VOL+
EJECT
SCM
MODE
VOL-
65
4
680 680
2
DOWN
UP
390 1k 2.2k 1.2k 390 390 1.2k 390
1
1k 1k
820
UDZS6.2B-X
R5V
S32
COM3
S17
S31
REMOCON
S30
S29
S28
ILL-10V
GND
S27
S26
S25
S24
S23
S22
S21
S20
S19
S18
LCD.CLK
LCD.SO
LCD.CE
KEY0
KEY1
KEY2
COM1
COM2
LCD.CE
KEY1
KEY0
LCD.CLK
LCD.SO
KEY2
COM2
S1 S2 S3 S4
S33
COM3 COM1
S1
S2 S3
S4
S5 S6 S7
S8
S9
S10
S11
S12
S13 S14 S15 S16
S17
S5 S6 S7
S8 S9
S10 S11
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
S12
S13
S14 S15
S16
S34 S35
S36 S37 S38 S39 S40 S41 S42 S43 S44
S45 S46 S47 S48
W

KD-S641
2-5
AB C
1
2
3
4
5
Printed circuit boards
Main board
Reverse side
C101
C151
C152
C153
C155
C201
C251
C252
C253
C255
C256
C302
C303
C304
C305
C306
C307
C308
C309
C310
C311
C312
C319
C320
C321
C995
C996
C327
C328
C329
C330
C331
C402
C403
C404
C405
C406
C407
C408
C419 C420
C501
C502
C530
C504
C505
C506
C507
C508
C509 C510
C511
C512
C513
C514
C515
C516
C518
C519
C520
C521
C522
C523
C524 C525
C527
C528
C529
C541
C542
C543
C551
C561
C562
C563
C564
C565
C566
B454
C568
C571
C572
C573
C574
R581 C576
C577
C701
C702
C703
C709
C710
C711
C712
C713
C714
C715
C716
C717
C718
C720
C725
C731
C732
C733
C801
C802
C803
C804
C807
C861
C862
C901
C902
C903
C904
C905
C906
C907
C908
C909
C910
C911
C914
C915
CJ701
IC541
CN801
D321
D332
D551
D701 D702
D731
D791
D801
D804
B753
D861
D866
D867
D901
D902
D903
D904
D333
D792
D868
D869
IC151
IC301
IC501
R557
IC561
IC801
IC901
L501
L561
L562
L701
L801
L901
Q321
Q332
Q432
Q501
Q541
Q701
Q702
Q731Q732
Q791
Q792
Q793
Q861
Q902
Q903
R101
R102
R151
R152
R153
R154
R155
R156
R201
R202
R251
R252
R253
R254
R255
R256
R301
R302
R303 R304
R307
R308
R321
R322
R323
R333
R334
R336
R401
R402
R403
R404
R407
R408
R433
R434
R436
R501
R502
R503
R504
R505 R506
R507
R508
R509
R510
R511
R512
R513
R516
R517
R518
R541
R542
R543
R544
R545
R546
R547
R548
R550
R596
R560
R561
R562
R563
R567
R568
R569
R570
R571
R572
R573
R574 R575
R576
R577
R578
R579
R805
R701
R702
R703
R704
R705
R708
R725
R735
R736
R733
R734
R791
R792
R793
R794
R795
R796
D810
R798
R801
R803
R804
R808
R809
R814
R811
R812
R813
R807
R815
R817
R818
R822
R823
R825
R826
R827
R828
R829
R830
R831
R832
R833
R834
R835 R836
R840
R841
R842
R861
R862
R902
R903
R904
R905 R906
R907
R908
R909
R910
R911
B453
X801
B752
C719
B759
D905
B756
B757
B758
R797
B754
B755
B751
D802
D803
D805
B458
C552
B457
B152
C556
C916
B150
C336
B456
B604
B558
C999
R524
R556
B452
R843
R844
R554
R551
C451
B851
C821
D821
D822
C822
D826
D827
D828
D824
B852
D823 D825 C833
C503
B855
R519
B552 B553
C567
B560
B556
B557
C555
B554
X561
B151
B451
R553
B551
C334
C335
C434
C998
R564
B455
R901
B853
C554
C823
C435
C427 C332
C333
C432
C433
B351
R580
C579
B352
B354
B353
R552
B601
B603
C824
B600
C558
C553
B606
B607
C557
Q555
D555
C597
CN501
B827
R525
B605
B602
C526
B366
C540
C570
B898

2-6
AB CD
1
2
3
4
5
Front board
Forward side
Reverse side
D601
D602
D603
D604
D605
D606 D607 D608 D609 D610 D611 D612
D613
D614
D615
D616
D617
D618
D619
D620
IC602
R601
R602
R603
R604
R605
R606
R607 R608 R609
R610
R611
R612
R613
R614
R615
R616
R617
R636
R637
R638
R639
S601
S606 S608 S609 S610 S611
S602
S603
S604
S607
S605
S612
S613
S614 S615
S616
S617
S618
S619
S620
LCD1
D731
D732
C601
C602
C603
C611
CJ601
D641
D642
D643
D644
IC601
IC602
R631
R632
R633
R634
R635
R640
R641
R642
R643
R644
R645
R651
R652
R653
R654
R655
R656
R657
R658
R661
R662
D731
D732
R731
R732
C612
D645

KD-S641
< MEMO >

KD-S641
VICTOR COMP ANY OF JAP AN, LIMITED
AV & MULTIMEDIA COMPANY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
(No.49769SCH)
Printed in Japan
2003/01