Jvc KD-G427-EE, KD-G425-UT, KD-G425-UH, KD-G425-U, KD-G424-UI Schematic
...
SCHEMATIC DIAGRAMS
CD RECEIVER
KD-AR370J,KD-G320J,KD-G421E
KD-G421EX,KD-G421EY,KD-G421EU
KD-G424UI,KD-G425UT,KD-G425UH
KD-G425UN,KD-G425U,KD-G427EE
CD-ROM No.SML200601
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
Contents
Block diagram
Standard schematic diagrams
Printed circuit boards
COPYRIGHT 2006 Victor Company of Japan, Limited.
2-1
2-5
2-29 to 31
No.MA245SCH
2006/1
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.
!
Please use enough caution not to see the beam directly or touch it in case of an
adjustment or operation check.
DIFFERENT POINT
KD-AR370 KD-G320 KD-G421 KD-G424 KD-G425 KD-G427
REMOTE
CONTROLLER
YES YES NO NO NO NO
YES YES
YES YES YES YES YES
NO
YES YESNO NO NONO
NO
NO NO NO
< MEMO >
Block diagram
A
D
A
S
R
o
(For KD-AR370,KD-G320,KD-G424 and KD-G425)
PICK UP
FOCUS &
TRACKING
COIL
LOAD&FEED
MOTOR
POSITION SET
SWITCH
SPINDLE
MOTOR
SW1, SW2
VF1,VF2,VT1,VT2,LD,MD,VREF
TRACKING+,TRACKINGFOCUS+,FOCUS-
FEED+
FEED-
PSW
SPINDLE+
SPINDLE-
SW1, SW2
Function section
IC501
BTL
DRIVER
CN503
CN503
SPINDLE+,SPINDLEFEED+,.FEEDTRACKING+
TRACKING-
CN501
FOCUS+,FOCUS-
CD mechanism control secti
CN502
CN502
VF1
VF2
VT1
VT2
MD
LD
VREF
PSW
FOP
TRP
TRVP
VREF
SPOUT
IC521
RF AMP
MLD
MDAT
MCLK
NRST
NPW
LCD & Key control section
D630
POWER LED
S601 to S618
KEY MATRIX
IC661
LCD DRIVER
COM1 to COM3
S1 to S52
LCD1
LCD DISPLAY
ACC5V
KEY0
KEY1
KEY2
LCD.CL
LCD.DA
LCD.CE
D631 to D648
D650,D651
LIGHTING
DISPLAY
DIMMEROUTILL10V
REMOCON
IC681
REMOCON
D652,D653
DIMMER
Q670,Q671
DIMMER
CONT.
ENC1
ENC2
JS686
ENCODER
CJ601
KEY0 to 2
LCD.CL
LCD.DA
LCD.CE
REMOCON
CN701
ENC1,ENC2
DIMMEROUT
1.5V
OUTL
OUTR
IC581
CD L.P.F.
IC981
1.5V REGULATOR
STAT
IRQ
VDD5V
IC523
I
2-1
ANT
Main amplifier section
J1
TU1
FM/AM
TUNER
TU_L
TU_R
rol section
MLD
MD ATA
MCLK
NRST
NPWDOWN
STAT
IC523
IRQ
LM
MSW
SW1
SW2
PSW
SM
SQ
EO
IFC
IFC.CONT
FM.OSC
S.METER
IC701
CPU
MUTE
SUBMUTE
RESET
JBUS.SI
JBUS.SO
JBUS.IO
JBUS.SCK
JBUS.INT
Q781, Q782,Q783
MUTING
Q301
SDA
SCL
E.VOLUME
IC775
RESET
CD.L
CD.R
LINEOUTMUTE
IC161
Only for KD-AR370 and KD-G320
Q321, Q331
FLO
LINE OUT
FRO
RLO
RRO
MUTE
OUTLF,OUTRF
OUTLR,OUTRR
STANDBY
MUTING
Q341, Q351
LINE OUT
MUTING
POWER
EACH BLOCK
SW5V,ACC5V
VDD5V.CD5V
9V,ILL10V
STBY
OFFSET
IC901
REGULATOR
ANT
D906,D907
PWR.ANTENA
Only for KD-G424 and KD-G425
TEL_MUTE
Q891
TEL.MUTE
Only for KD-AR370
IC801
JVC BUS
IC301
AMP.
ACC
TEL.MUTE
SCK
LF+,LFRF+,RFLR+,LRRR+,RR-
LF
RF
LR
RR
CH_L
CH_R
LINE OUT
FRONT
J321
LINE OUT
REAR
CN901
SPK
BATTERY
J801
CHANGER
CONTROL
JBUS.SI
2-2
Block diagram
A
D
A
S
R
o
(For KD-G421 and KD-G427)
PICK UP
FOCUS &
TRACKING
COIL
LOAD&FEED
MOTOR
POSITION SET
SWITCH
SPINDLE
MOTOR
SW1, SW2
VF1,VF2,VT1,VT2,LD,MD,VREF
TRACKING+,TRACKINGFOCUS+,FOCUS-
FEED+
FEED-
PSW
SPINDLE+
SPINDLE-
SW1, SW2
Function section
IC501
BTL
DRIVER
CN503
CN503
SPINDLE+,SPINDLEFEED+,.FEEDTRACKING+
TRACKING-
CN501
FOCUS+,FOCUS-
CD mechanism control secti
CN502
CN502
VF1
VF2
VT1
VT2
MD
LD
VREF
PSW
FOP
TRP
TRVP
VREF
SPOUT
IC521
RF AMP
MLD
MDAT
MCLK
NRST
NPW
LCD & Key control section
D630
POWER LED
S601 to S618
KEY MATRIX
IC661
LCD DRIVER
COM1 to COM3
S1 to S52
LCD1
LCD DISPLAY
ACC5V
KEY0
KEY1
KEY2
LCDCL
LCDDA
LCDCE
D631 to D648
D650,D651
LIGHTING
DISPLAY
REMOCON
IC681
REMOCON
D652,D653
DIMMER
Q670,Q671
DIMMER
CONT.
DIMOUTILL10V
ENC1
ENC2
JS686
ENCODER
CJ601
KEY0 to 2
LCDCLK
LCDDA
LCDCE
REMOCON
CN701
ENC1,ENC2
DIMOUT
1.5V
OUTL
OUTR
IC581
CD L.P.F.
IC981
1.5V REGULATOR
STAT
IRQ
VDD5V
IC523
I
2-3
l section
MLD
MD ATA
MCLK
NRST
NPWDOWN
IC523
ANT
LM
MSW
SW1
SW2
PSW
STAT
IRQ
Main amplifier section
J1
TU1
FM/AM
TUNER
FSU
AFS
Q_OUT
SSTOP
TUSDA
TUSCL
IC701
CPU
TU_L
TU_R
RDSDA
RDSCL
ERCLK
ERDI
RESET
Q781, Q782
MUTE
IC71
RDS
DETECTOR
IC771
EPROM
IC775
RESET
MUTE
DRIVER
MUTE
VSCL
VSDA
MPXW
Q301
CD_L
CD_R
FL_OUT,FR_OUT
RL_OUT,RR_OUT
IC171
E.VOLUME
POWER
CDON
Q341, Q351
LINE OUT
MUTING
MUTE
IC301
POWER
AMP.
STANDBY
EACH BLOCK
SW5V,ACC5V
VDD5V.CD5V
9V,ILL10V
IC901
REGULATOR
ACC
RLO,RRO RLO,RRO
LF+,LFRF+,RFLR+,LRRR+,RR-
LINE OUT
REAR
CN901J321
SPK
BATTERY
STEERING
Only for KD-G421
Q891
TEL_MUTETEL_MUTE
TEL.MUTE
SI,SO,I/O,SCK,INT SI/SO
IC801
JVC BUS
CH_L
CH_R
J801
CHANGER
CONTROL
CN761
STEERING
REMOTE
2-4
Standard schematic diagrams
3
Main section (for KD-AR370,KD-G320,KD-G424,KD-G425)
J1
QNB0190-001
R31
R32
R33
1.5k
2SC3928A/QR/-X
C33
2.2/50
0.001
C32
Q31
2SC3928A/QR/-X
Q32
R34
1k
NPWDOWN
CD8V
CD_R
CD_L
MSW
NRST
STAT
MDATA
MCLK
R35
10k
220/10
R36
470
C31
9V
SW1
SW2
PSW
LM
IRQ
MLD
TU1
QAU0312-002
L1
4.7u
3.3K
R91
MONO
STAT
10k
R2
R4
SEEK/STOP
JBUS.IO
JBUS.SCK
4.7k
4.7k
R726
R725
C97
C98
C99
10k
Q1
RT1N141C-X
JBUS.SI
JBUS.SO
4.7k
4.7k
R724
R723
R81
0.1
0.01
82pF
D782
UDZW10B-X
IFC.CONT
0.1
C715
C782
RT1P141C-X
R721
3.3K
0.0068
0.0068
C92
C82
47/16
Q782
1SS
RT
D783
1SS355W-X
LINEOUTMUTE
47k
1k
1k
1SS355W-X
D2
R13
D4
2.2k
220p
C1
2SA1365/F/-X
10k
1SS355W-X
RT1N141C-X
10k
R752
0.1/50
47/16
C2
C3
Q5
R12
Q4
10k
R754
R37
E0
R3
10
0
1SS355W-X
D701
C17
C12
Q6
2SA1530A/QR/-X
D3
1SS355W-X
R715
1SS355W-X
1SS355W-X
1SS355W-X
D702
D703
D704
1SS355W-X
D1
R14
47k
0.022
C4
1k
C16
R11
10k
DETACH
10k
R711
FM/AM
47K
R743
MSW
R10
5.1k
R742
100
R1
0.01
220/10
C6
C9
C13
10
FM.OSC
NPWDOWN
0.027
0.027
C81
8.2k
0 22k
47k
C91
S.METER
LCD.CE
3.3k
R701
120p
C8
IFC
LCD.SCK
3.3k
R709
0.01
C11
MA111-X
LCD.SO
3.3k
R708
0.1
C15
Q2
RT1N141C-X
D6
MLD
MCLK
SD/ST
MDATA
0.1/50
C7
R6
R5
R16
IRQ
R710
QGZ1601J1-15
CN701
C711
0.1
0.1
C98
0.1
UDZW6.2B-X
UDZW6.2B-X
C713
D712
D711
UDZW6.2B-X
UDZW6.2B-X
UDZW6.2B-X
D721
D714
D713
UDZW6.2B-X
UDZW6.2B-X
UDZW6.2B-X
D716
D715
D717
DETACH
ACC5V
REMOCON
DIMMEROUT
LCD.SCK
LCD.SO
LCD.CE
UDZW6.2B-X
UDZW6.2B-X
UDZW6.2B-X
D718
D719
D720
ENC1
ENC2
KEY0
KEY1
KEY2
TEL-M
LM
C702
0.01
NRST
DIMMEROUT
SCL
SDA
VOLMUTE
SUBMUTE
STBY
OFFSET
10k
R751
R719
R712
R713
R760
10k
R753
IC701
LC723784-9D19
0
4.7K
4.7K
2.2K
2.2K
R762
R763
1K
R764
100
47k
10K
R716
R717
R718
R703
R704
47k
47k
10k
47k
47k
10K
R705
R706
R722
SW1
SW2
PSW
ENC2
ENC1
IFC.CONT
SD/ST
4.7k
4.7K
R727
R728
JBUS.INT
REMOCON
FM/AM
MONO
SEEK/STOP
MUTE
R749
R733
R732
R730
R731
R729
R756
R755
S.METER
47k
47k
1K
10K
10K
47k
47k
47k
2-5
MONO
OCO
10k
R2
SEEK/STOP
STAT
JBUS.IO
4.7k
R726
4.7K
R728
JBUS.INT
FM/AM
R4
10k
Q1
RT1N141C-X
JBUS.SO
JBUS.SCK
4.7k
4.7k
R724
R725
MONO
SEEK/STOP
TU1
QAU0312-002
R91
R81
C97
0.01
C98
82pF
C99
D782
UDZW10B-X
IFC.CONT
JBUS.SI
4.7k
R723
MUTE
0.1
0.1
C715
3.3K
3.3K
0.0068
C82
C782
47/16
Q782
RT1P141C-X
47k
R721
R749
R733
R732
R730
R731
R729
R756
R755
S.METER
1SS355W-X
RT1P141C-X
D783
1SS355W-X
47k
47k
1K
10K
10K
47k
47k
47k
3.9K
0.0068
R92
R82
C92
D784
Q783
LINEOUTMUTE
SUBMUTE
R748
47k
R740
R739
R736
3.9K
C83
Q781
RT1P141C-X
MUTE
X701
QAX0406-001Z
D706
1SS355W-X
10k
10k
10k
4.7k
R735
C703
C704
4.7k
R737
1/50
C93
FM.OSC
R741
KEY0
KEY1
KEY2
4.7k
R738
FLO
1SS355W-X
100/10
C909
VOLMUTE
100/10
C908
CH.R
0.01
C907
C166
C783
R164
C181
0.082
R801
R802
JBUS.SI
FLO
47k
4.7/25
1/50
4.7k
R903
1SS355W-X
1SS355W-X
1SS355W-X
R804
C182
9.1k
R901
FRO
RLO
47K
R172
C175
4.7/25
C163
0.47
IC161
TDA7419-X
47k
R892
D891
1SS355W-X1k1SS355W-X
C891
0.1
Q902
47k
R909
Q903
2SA1530A/QR/-X
R891
27K
LINEOUTMUTE
RRO
MEMORY.IN
J801
QNZ0095-001
CH.L
RRO
C164
0.47
D892
20k
R908
C895
47k
R895
D903
1SS355W-X
R907
1K
1K
R906
R905
SCK
SCL
SDA
Q895
RT1N141C-X
0.1
12K
0.01
C910
1/50
C781
220/6.3
D781
1SS355W-X
CD_L
CD_R
2.2/50
2.2/50
C183
Q891
RT1N141C-X
2SC3928A/QR/-X
C184
R910
22p
27p
EO
47k
IFC
47K
R707
C716
0.1
TEL-M
C705
10/16
R745
47k
C701
220/6.3
L701
4.7u
VDD
220/10
C911
D331
D321
D351
D341
R803
100
47k
1/50
22/16
C904
22k
100k
JBUS.SO
R174
C176
22/16
C905
R331
820
R335
2.2K
R325
2.2K
R321
820
R351
820
R355
2.2K
R345
2.2K
R341
820
C801
R809
IC801
SN74AHC126NS-X
JBUS.IO
RLO
FRO
47K
47k
R162
C165
4.7/25
4.7/25
C194
C915
10/16
10/16
CRS03-X
C919
D907
D906
0.047
10/16
CRS03-W
R332
100
C802
100p
0
R352
R342
R322
100
100
100
10K
100/10
C191
R807
R173
C913
C331
100P
C321
100P
C351
100P
C341
100P
4.7
R811
R810
100k
22k
100
47K
R808R805
0.22
JBUS.INT
JBUS.SCK
47k
R806
100k
C168
R166
0.47
0
C312
C313
C169
R167
0.47
0
C179
R177
0.47
0
C314C315
C178
R176
0.47
0
C902
0.01
C901
2700/16
!
D901
1N5401-F64
IC901
!
AN80T71
C916
2.2/50
C304
0.022
100P
100P
C319
0.022
100P
C309
100/16
100P
C323
0.01
R315
7.5K
C303
0.022
D904
D905
L901
QQR0703-001
R902
RF+
4.7/25
RF+
RR+
LR+
LF+
CRS03-W
C914
RF-
RR-
LR-
CRS03-W
LF-
1k
C363
C305
0.1
C302
R303
R302
LR+
0.1
C316
0.1
LR-
0.1
LF+
R364
C310
10/16
J321
R361
RF-
R911
R363
C361
2.2
2.2
LF-
C308
2.2
0.1
C364
0.1
C307
0.1
C311
0.47
0.1
C362
0.1
R362
C306
0.1
RR+
RR-
STBY
1k
47k
CN901
QNZ0611-001
2.2K
R912
2.2K
OFFSET
2.2
C301
0.22/50
R311
R301
1k
47K
IC301
!
LA47201
Q301
2SC3928A/QR/-X
D301
UDZW3.3B-X
QMFZ047-150-T
R304
4.7k
!
Q331
KTD1304-X
Q321
KTD1304-X
Q351
KTD1304-X
Q341
KTD1304-X
10K
CH.L
CH.R
47K
R163
0.01
R191
C192
0.1
C906
22/16
C903
R918
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
2-6
CD servo control section (for KD-AR370,KD-G320,KD-G424,KD-G425)
2
4
K
01
FOCUS+
TRK+
FOCUS-
TRK-
SP-
FEED-
SP+
FEED+
CN501
FEEDFEED+
PSW
SPINDLESPINDLE+
SW1
SW2
TRACKING-
TRACKING+
FOCUS+
FOCUSLD
GND
MD
VR
VF1
VREF
VT1
GND
VT2
VCC
VF2
GND
FEED-
VF2
FEED+
RFVDD
GND
VT2
SW1
VT1
SW2
VF1
PSW
VR
SPINDLELD
SPINDLE+
FOCUS-
VREF
FOCUS+
MD
TRACKING+
TRACKING-
QGB2027M4-22S
R565
FEED-
FEED+
150
SP+
FOCUS-
FOCUS+
TRK+
TRK-
SP-
VREF
VF2
VT2
VT1
VF1
LD
VT2
VT1
VF1
VF2
MD
MD
LD
VREF
CN503
QGZ2512M1-08
R543
R544
Q521
R554
2SA1530A/QR/-X
47K
R556
QGZ2512M1-10
CN502
SW1
SW2
PSW
VREF
R5
30
3300p
39k
4.7k
C527
C5
560
R541
R542
C529
180p
0.0082
1k
1k
47/6.3
4.7
C537
C533
47/6.3
C530
0.0082
R545
R548
C528
3.3K
3.3K
C520
C535
0.0033
2-7
528
0p
39k
R541
3.3K
3.3K
0.0033
QGZ2512M1-10
CN502
R540
30K
C524
560P
C531
0.33
C532
0.33
0.1
C535
C525
0.022
C526
0.022
C536
MSW
47/6.3
TRVP
TRPLMFOP
C523
NPWDOWN
C539
0.1
C540
ARF
SPOUT
R537
680p
C541
0.015
C542
C543
1000p
C544
0.082
C546
100p
1.5M
0.1
R558
!
220/6.3
82k
D501
1A3G-T1
0.1
C552
C551
FOP
MN6627945EE
R559
820
47/6.3
IC521
TRP
OUTR
C547
QTE0J57-476Z
OUTL
C583
820p
15k 27K
QTE1E57-475Z
0.1
C534
OUTL
TRVP
SPOUT
0.1
C545
0.1
OUTR
C549
QTE1E57-475Z
15k
C584
IC581
NJM4565E-X
C585
47/6.3
C538
C548
QTE0J57-476Z
C586
820p
R585 C587
5.6K
R587
R535
10K
R588 R590R584
R586
5.6K
150p
27K
C588
150p
CD_R
0
10k
22k
R594
R592
C590
QTE0J57-476Z
C591
QTE1C57-107Z
0.1
22k
10k
R593
R591
C592
R589R583
0
0.1
C983
C984
100/6.3
NJU7772F15-X
SW1
SW2
PSW
NPWDOWN
R533
27k
R534
68k
4.7k
0.22
R523
C522
R525
1K
R526
1K
R527
2.2k
R528
2.2k
2.2k
R529
R530
4.7k
R531
4.7k
R532
4.7k
IC981
MSWLMNRST
X521
QAX0714-001Z
R521
1M
R522
220
R524
2.2K
CD_L
C982
C981
100/6.3
0.1
IRQ
STAT
MCLK
MDATA
MLD
PSW
1k
1k
R562
SN74LVC2G07V-X
IC523
NRST
MLD
MDATA
MCLK
R561
STAT
IRQ
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
2-8
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