JVC KDLHX-551, KDLHX-557, KDLHX-552 Service manual
SCHEMATIC DIAGRAMS
CD/SD RECEIVER
KD-LHX551, KD-LHX552
KD-LHX557
CD-ROM No.SML200503
MENU
KD-LHX551, KD-LHX552
Area suffix
E ------------ Southern Europe
EX ------------ Northern Europe
EY ------------- Eastern Europe
EU --------------------------Turkey
KD-LHX557
Area suffix
EE --------- Russian Federation
KD-LHX551/KD-LHX552
DISP
KD-LHX557
Control Panel
SILVER
Contents
Block diagram
Standard schematic diagrams
Printed circuit boards
COPYRIGHT 2005 Victor Company of Japan, Limited.
KD-LHX552KD-LHX551 KD-LHX557
BLACK
BLACK
2-1
2-2 to 10
2-11 to 13
No.MA152SCH
2005/3
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.
Block diagram
FOCUS
&
TRACKING
COIL
PICK UP
SW1 to SW3
SW4
REST SWITCH
TRACKING+
TRACKINGFOCUS+
FOCUS-
VT1, VT2
VF1, VF2
LD, MD
Vc
CN001
CD servo control section
CD servo control section
AD0 to AD11
IO0 to IO3
CAS, RAS
OE, WE
IC652
VT1, VT2
VF1, VF2
MDI, LDO
CN601 CN602
PVREF
SW1 to SW3
SW4
REST
MP3/WMA
DEC
IC601
CD RF
&
SERVO
MP3REQ, MP3CK, MP3DI, MP3STB, MP3RST
SDO, BCKO, LRCKO
BCK
LRCK
DATA
BUS0 to 3
BUCK, CCE
DSPRST
FMO, DMO
TRO, FOO
TRACKING+, TRACKINGFOCUS+, FOCUS-
IC653
DRAM
IC502
E2PROM
IC681
CD
DRIVER
EROMDI
EROMCK
LOAD
LD/FE
IC501
CPU
CDRESET
CDMUTE
CDREQ
P. DE T
B.DET
BUSSI
BUSSO
BUSIO
/BUSIO
BUSSCK
CDSCK
CDLRCK
CDDATA
BUSSI/SO
BUSCLK
IC503
J-BUS
BUFF
ANT
CN503
DSP / Main amplifier / Voice control section
BUSENABLE
DSP_TUNER_IIC_SDA
CN721J1
CDSCK
CDLRCK
CDDATA
TU1
FM/AM TUNER
KAGC2
AF_sample1, AF_hold1
AGC1_1, AGC1_2
D1_1, D1_2
IC10
DSP
CDRESET
CDMUTE
CDREQ
PON
PSAVE2
BUSSI/SO
BUSCLK
DSP_INIT_FIN
RDS_CLK
RDS_DATA
RESET_7730
SDA, SCL
IC701
CONTROLLER
RST_IN
IC702
RESET
REMOCON
DISPCK
DISPDA
DISPCE
RST_101E
PSAVE2
KEY
CN701
DSP_TUNER_IIC_SCL
DAC_FL
DAC_FR
LINE.IN-L
LINE.IN-R
SB
Changer-L
Changer-R
EEPROM DI
EEPROM DO
EEPROM CLK
IC703
EEPROM
VOLDA
VOLCK
VOLMUTE
IC365
E.VOLUME
B1 Lch
B2 Rch
IC361
LPF
V-ATT1,VATT2
V-NAR,V-BUSY
V-ST,V-RESET
V-SD,V-SCK
V-MUTE
BUSSI,BUSSO
BUS_I/O,/BUS_I/O
BUSSCK,BUSINT
PM+
PMPMKICK
CODE1
CODE2
CODE3
S.T.REMOCON
OUT F1
OUT R1
OUT F2
OUT R2
MIX AMP
V-FL
V-FR
V-RL
V-RR
Q4101,Q4151
Q4201,Q4251
BUF AMP
AOUT
IC402
VOICE
CONTROL
IC710
J-BUS BUFF
IC191
IC291
A0 to A20
D0 to D7
OCE
EACH
BLOCK
SB
FL
FR
RL
RR
LINE AMP
IC951
POWER
AMP
IC901
REGULATOR
IC381, IC382
SUB
WOOFER
AMP
IC401
VOICE
ROM
JBUS_SI/SO
JBUS_SCK
IC991
PANEL
DRIVER
IC171
IC271
FL+, FLFR+, FRRL+, RLRR+, RR-
LINE.IN-L
LINE.IN-R
Changer-L
Changer-R
OUT1
OUT2
FRONT
CN345 CN901 CN381 CN341 CN351
LINE OUT
REAR
LINE OUT
SPK
BATTERY
SUB
WOOFER
OUT
LINE IN
CD
CHANGER
CN702CN991 CN992
STEERING
REMOTE
CABLE
PAN EL
MOTOR
SWITCH
SPINDLE
MOTOR
LOAD&FEED
MOTOR
TO
SD CARD
SPINDLE+, SPINDLE-
LOAD/FEED+, LOAD/FEED-
SDCS
SDDO
SDDI
SDCK
CN901
SDWP
C.DET1
IC635
BUFFER
SDCK
SDSCK
CN801
IC841
REMOCON
REM
IC821
BACK LIGHT
RST
RESET
PS2
Q8301
SW
RESET
LCD & Key control section
D8734
D8735
DISPDA,DISPCK
DISPCE,KEYDA
SBRST
S8201
RESET SW
R4,R5
G4,G5
Q8770 to Q8781
B4,B5
RST
LED-SW
LCD DRIVER
A1 to A21,D0 to D15
RE/RD,WE,RY/BY
CS1,ROMRST
IC815
FLASH
ROM
CL1
CL2
CL3
IC801
S8001 to S8007
SW
Q8751 to Q8768
BACK LIGHT SW
KEY0
KEY1
KEYIN
R1 to R3
G1 to G3
B1 to B3
D0 to D7
OSC,RES,CS2
A0,WE,RE/RD
X,XL,XR
Y,YD,YU
Q8701 to Q8704
TOUCH PANEL
DRIVE
CN851 CN871
D8731
to D8733
BACK LIGHT
LCD
MODULE
TOUCH
PAN EL
2-1
Standard schematic diagrams
DSP section (For KD-LHX551 & KD-LHX552)
100
R7
100
R8
C30
0.047
C31
0.047
10p
C32
X1
C34
4.7/25
L30
NQR0129-003X
AFCK
QAX0781-001Z
C33
C35
C36
0.1
0.1
C42
0.1
C43
4.7/25
C44
4.7/6.3
C45
0.001
C38
0.001
C39
10p
C37
0.01
L31
2.2
180p
10/6.3
0.1
100p
C41
C40
C1003
C46
0.1
C47
4.7/6.3
C2404
0.001
R2401
6.8k
C1404
0.001
R1401
6.8k
R3401
47k
R2503
6.8k
R1503
6.8k
J1
QAM0556-001
TU1
QAU0324-002
CDSCK
CDLRCK
CDDATA
DISCSEL
CDMUTE
CDREQ
CDRESET
B.DET
P.DET
J_SI/SO
J_SCK
VDD5V
CD8V
CD8V
GND
GND
PICTDI
PICTCLK
GND
GND
To CN503
(SHEET 9)
D1
4.7
L1
D2
CN721
QGB2027M5-20S
CDSCK
CDLRCK
CDDATA
R2
R7205
0.047
C1013
100
47/16
C2
C1
390p
C3
47/16
C4
R1
390p
C5
C13
390p
0
R3
0
R4
R9
27k
R10
0
C7201
0.01
C7203
0.01
C7
C8
C9
C10
C11
C12
BUSENABLE
CDMUTE
CDREQ
C7202
0.01
C7204
0.01
27k
10
R16
UN2211-X
R11
PON
Q7201
1k
R13
Q2
10
PSAVE2
L7201
R12
10k
C6
UN2211-X
CDRESET
JBUS_SCK
JBUS_SI/SO
47
UN2211-X
Q7202
Q1
RFON
PICTDI
Q3
UN2211-X 2SB624/4/-X
PICTCLK
C82
C1006
L40
1012k
NQR0129-003X
L41
R3405
12k
R2404
R1404
R2504
47/16
C3401
C1401
C2401
C2502
2.2/50
2.2/50
R2402 R1402
47k 47k
C2402 C1402
0.0047 0.0047
0.022
LINE.IN-L
LINE.IN-GND
LINE.IN-R
C81
DSP_INIT_FIN
IC10
SAF7730HV/N224A
0.1
C48
100
R41
R40
10k
10k
R1504
C1502
1
1
100/6.3
10
C49 C50
C2501C1501
C1005
47/6.3
C51
22/6.3
100p100p
0.047
C1007
0.1
C80
C76
0.022
0.047
C1012
100p
10/6.3
0.047
C75
C1011
R69
100
R68
100
C69
C1009
0.047
C62
220/6.3
C60 C61
0.1
C57
C56
100p
100p
C55
C53
1/16
2.2k
R43
0.1
47/6.3
C54
IC11
PHK04P02T-X
DSP_TUNER_IIC_SDA
DSP_TUNER_IIC_SCL
C52
0.047
2.2k
R42
C59
R44
0
R45
0
0.033
C1004
0.047
R78
100
10/6.3
R64
100
R63
100
C65
470p
C63
0.022
L63
1.8
100/6.3
0
R1009
C1008
47/6.3
100p
C70
C71
R71
100
R70
100
R67
100
CDDATA
R66
100
CDLRCK
R65
100
100p
100p
100p
C66
C67
C68
C64
0.0033
C1010
0.047
R60
10
0
R46
C58
100/4
C2552
C3801
0.0033
QGA2501F1-02 QJB005-040909
CDSCK
1
R49
10k
C1552
0.0033
C3802
1/50
C102
0.01
Q30
UN2211-X
RESET_7730
CN991 CN992
RDS_DATA
RDS_CLK
PMKICK
D991
UDZS3.9B-X
Q991
UN2211-X
R991
1k
IC991
BA6956AN
100/10
C991
0.047
C992
PM+
PM-
To
Front door mechanism
PICTDI
PICTCLK
CODE1
CODE2
CODE3
To
Front door mechanism
2.2k
R775
R771
270
To CN801
R712
10k
Q7504
2SB624/4/-X
R7504
47k
CN701
QGF1041C2-16W
D718
SML-310LT/MN/-X
2.2k
R7505
Q7503
UN2211-X
R788
47k
D719
SML-310LT/MN/-X
D720
SML-310LT/MN/-X
0.022
0.047
DAC_FL
DAC_FR
DSP_INIT_FIN
CODE1
CODE2
CODE3
PM+
PM-
PMKICK
RDS_CLK
RDS_DATA
RESET_7730
DSP_TUNER_IIC_SCL
DSP_TUNER_IIC_SDA
BUSENABLE
RFON
AFCK
PON
CDRESET
CDREQ
CDMUTE
Chenger-L
Chenger-R
VDD5V
3.3V
SW5V
GND
KEY
DETACH
DISPCE
DISPDA
DISPCK
10V
SPSAVE2
ACC5V
REMOCON
RST_101E
P-VDD5V
CDLIGHT
GND
FGND2
SB
(SHEET 2)
8V
9V
(SHEET 4)
2-2
SHEET 1
Main amplifier section (For KD-LHX551 & KD-LHX552)
100k
R3801
C3805
10k
10k
R1606
R1605
10k
10k
47/6.3
0.1
C3654
R2606
R2605
C1651
QTE1H55-225Z
C2651
PM+
CODE1
CODE2
CODE3
PON
0
R765
R764C723
R763
R762
R732
IC701
MN101E01MDT
SCK_IN
MMOD_IN
1k
220
R707
R710
180
10k
R725
R701
DSP_TUNER_IIC_SCL
L703
0.01
X701 X702
QAX0782-001Z
7p
C714
7p
C702
C701
47/6.3
C3653
10/10
QTE1H55-225Z
R703C704
QAX0401-001
LINE.IN-L
LINE.IN-GND
LINE.IN-R
SB
DAC_FL
DAC_FR
DSP_INIT_FIN
CODE1
CODE2
CODE3
PM+
PM-
PMKICK
RDS_CLK
RDS_DATA
RESET_7730
DSP_TUNER_IIC_SCL
DSP_TUNER_IIC_SDA
BUSENABLE
RFON
AFCK
PON
CDRESET
CDREQ
CDMUTE
Chenger-L
Chenger-R
V-FR
V-RR
V-RL
V-FL
V-ATT1
V-MUTE
V-NAR
V-BUSY
V-ST
(SHEET 3) (SHEET 1)
V-RESET
V-SD
V-SCK
V-ATT2
8V
VDD5V
3.3V
9V
SW5V
(SHEET 1)
KEY
DETACH
DISPCE
DISPDA
DISPCK
10V
SPSAVE2
ACC5V
REMOCON
P-VDD5V
(SHEET 1)
RST_101E
CDLIGHT
CN702
QGA2006F1-02
RST_IN
MMOD_IN
SDA_IN
P04_IN
SCK_IN
R1602
C1604
C1602C2602
R756
220
820p820p
VOLCK
R784
1k
DISPCE
2.2k
C1603C2603
QTE1H55-225ZQTE1H55-225Z
IC361
VOLDA
VOLMUTE
R797
R755
220
0
1k
1k
47k
R723
R724
R722
DISPDA
DISPCK
R777
33k
R1603
12k
NJM4580V-X
R2603
12k
R2602
33k
4.7k
R3653
RST_IN
47k
0.01
C777
C1605
120p
4.7/25
47k47k
R1604R2604
C1606
47/6.3
C2606
C2605
4.7/25
C2604
120p
C3601
47/16
PM-
PMKICK
RFON
BUSSI
BUSSO
BUSSCK
BUS_I/O
1k
1k1k1k1k1k1k1k
1k1k1k
1k1k1k
R745
100
100
100
C715
R742
R709
KEY
0.1
R743
R744
R766
R741
R738
R767
SDA_IN
P04_IN
220
R706
R705
100k
R739
DSP_TUNER_IIC_SDA
RESET_7730
330/6.3
0.01
C713
C712
R1601
20k
100p100p
C1601C2601
R2601
20k
/BUS_I/O
C722
C720
0.01
C719
C104
0.01
L702
47
C705
100/16
100p
C707
330/6.3
R7002
47k
C716
470p
D705
C721
MA8062/M/-X
100p
0
R718
IC702
PST9121N-X
MUTING_CONT
CDLIGHT
D701
1SS355-X
C776
47/6.3
R7001
R796
R716
R717
R776
C103
0.01
R3802
R3809
CDMUTE
CDRESET
1k
R746
R737
10M18p
R702
47k
C703
8.2k
10k
R768
R769
R770
R747
V-BUSY
0.01
C717
33p
R3803
27k
C3806
0.0082
R3808
10k
BD3805F-X
V-ATT1
V-MUTE
1k
0
R749
R761
1k
R721
RDS_DATA
RST_101E
IC365
C3804
2.2/50
220k
220k
220k
47k
V-ST
V-NAR
R720
47k
DETACH
R774
IC381
V-ATT2
V-RESET
47k
47k
R790
R789
330/6.3
C7002
NJM4565V-X
24k
22/6.3
C3809
R3811
0.1
47k
47k
47k
R791
R792
R793
IC382
NJM2160BV-X
R3806
36k
C3803
R3654
10k
R3655
39k
C3652
C3651
0.1
10/16
47k
47k
R980
R794
0.01
C7003
VOLMUTE
R715
1K
R728
R733
R757
R731
R729
R730
R735
R734
R719
R795
56k
R711
R751
R750
R760
R752
R759
R727
47k
R981
0.0015
VOLCK
1k
R748
R753
C3808
VOLDA
2.2/50
C3811
10/10
C708
C709
0.01
TELMUTE_IN
1k
1k
0
1k
DIM_IN
1k
10k
270
BUSENABLE
0
V-SCK
0
0
1k
12k
REMOCON
1k
KEY
1k
1k
1k
0
D704
D703
MA111-X
SPSAVE2
R3805
100/10
C3810
47k
R3804
330/6.3
C7001
47k
R758
DIM
V-SD
AFCK
MA111-X
820
0
RDS_CLK
R754
22k
BUSINT
ANTCONT
PSAVE2
R3810
Q3802
KTD1304-X2.2k
Q3801
R3807
UN2111-X
L701
47
100k
C3403
V-FR
V-RR
V-RL
V-FL
CDREQ
R726
Q703
UN2213-X
R7101
33k
R7105R7106
0.047
R7103
100k100k
TP706
BUSINT
0
R7102
TP705
BUSSCK
BUS_I/O
R7104
18k
R7107
100
C3922
C3902
0.047
C3807
R3922
C2921
4.7/25
C2922
C2902
4.7/25
47/6.3
D3921
UDZS4.7B-X
R3902
C1921
4.7/25
C1922
C1902
47/6.3
D3901
UDZS4.7B-X
IC703
BR24L32F-W-X
TP704
TP703
R704
/BUS_I/O
1k
R7119
1k
SN74AHCT126PW-X
R2921
10k
R2922
10k
1
R2902
10k
1
R2901C2901
10k
R1921
10k
R1922
10k
1
R1902
10k
1
R1901C1901
10k4.7/25
R736
MA111-X
D702
2SB709A/QR/-X
R708
27k
47k
IC710
470
IC291
NJM4565V-X
R2903 R2923
470
R1923
IC191
NJM4565V-X
R1903
C710
0.047
270
Q903
150k 150k
R2904
10k
R1924
R1904
150k 150k
100p
C1801
C2801
100p
10k
10k
R2924
10k
R2905
R1905
10k
10k
R7120
R1925
C3901
47/10
C944
10/6.3
D945
1SS355-X
10
R7110
100
R1801
R2801
10k
C943
R941
100
R909 R908
BUSSI
3.9k
R7112
100/6.3
47k 15k
100
100
R2925
10k
UN2113-X
Q942
D942
D944
Q905
UN2111-X
ANTCONT
JBUS_SI/SO
BUSSO
1k
R7113
100p
C2403
10
R3901
MA152WA-X
D941
UDZS11B-X
UDZS3.3B-X
Q906
UN2211-X
JBUS_SCK
R7116
R7117
R7118
C7101
0.01
R7111
100k
R3403
100k
100k
6.8k
Q941
C942
470
1k
R2725
100k
R2726
R1705
100k
R1706
D943
MA152WA-X
UN2111-X
47/16
C3402
1k
R2705
100k
R2706
R1726 R1725
C1721
1k
C941
100/16
C1403
0.047
100k 1k
4.7/25
47/10
100p
C2701
C3721
C2721
4.7/25
C3701
C1702
0.1
C3702
L971
Chenger-L
GND
Chenger-R
CN381
QGA2501C1-03
22/6.3
C2702
0.1
C3722
47/10
22/6.3
C1701
4.7/25
10
C972
220/16
PON
C2722
4.7/25
R2722
24k
R2702
24k
C1722
R1722
24k
R1702
24k
BD9781HFP-W
C974
C973
0.1
0.1
D972
D706
MA111-X
UN2111-X
UN2211-X
R1501
100
R2501
100
CN341
QGA2006C1-04
0.1
0.1
IC971
240K
R971
L972
NQL71EM-330X
RB051L-40-X
C976
220/6.3
R913
Q907
Q908
R2724
36k
IC271
NJM2160BV-X
R2704
R1724
IC171
NJM2160BV-X
R1704
4700P
C975
150K
R972
390K
56K
10K
R973
R974
R975
C987
IC901
1k
0.01
10/16
C910
C917
100k
R1502
100k
0.047
C3501
R2502
36k
36k
36k
R976
10k
1SR154-400-X
1SR154-400-X
D971
180
R7501
QEXL1AM-476Z
HA13164A
NI
0.01
220/10
R906
C907
C908
BA33BC0FP-X
D973
D7501
SIR-34ST3F
0.1
C906
R917
R1451
820
R1452
820
Q1451
KTD1304-X
Q2452
KTD1304-X
R2451
820
R2452
820
2.2k
2.2k
2.2k
2.2k
R1455
R1456
R2456
R2455
R951
1
C2771
1k
1k
C2752
1k
1k
1
C1771
R956
47k
2SD601A/QR/-X
R9002
10k
10/16
R9001
D904
RB160M-30-X
R916
0.1
4.7k
UN2211-X
R2774
R2754
100p
C2772
100p
C1752
C1772
R1754
R1774
TELMUTE_IN
R9051
Q9051
UN2211-X
100k
RB160M-30-X
D1451
100p
100p
C2724
0.0015
C2723
100/10
R2723
C2725
47k
2.2/50
C2705
R2703
2.2/50
47k
C2704
C2703
100/10
0.0015
C1724CN351
0.0015
C1723
100/10
R1723
C1725
47k
2.2/50
C1705
R1703
2.2/50
47k
C1704
C1703
100/10
0.0015
0.01
C988
47k
22/16
C903
R918
QNZ0095-001
BA33BC0FP-X
RB160M-30-X
22
C989
R978
100/6.3
5.6k
R903
C902
22/16
IC973
D974
22
0.01
C984
C983
100/16
R979
Q901
UN2111-X
10k
R905
1k
R904
DIM
IC975
0.1
C971
10/16
100/10
0.01
C909
C905
C904
10k
C985
330/6.3
D917
Q902
C986
DIM_IN
9.1k4.7k
R901R902
RB160M-30-X
UN2211-X
1
C2751
1
C1751
47k
R9003
Q9001
C9001
D916
C916
RB160M-30-X
D2451
MA152WA-X
2.2k
Q952
47K
D905
Q951
2SD601A/QR/-X
R953
10k
R955
47k
1K
R9052
D9051
0.1
C9051
1.0k
R912
C951
2.2/50
C955
R954
MA152WA-X
R9053
0.1
C9052
0.1
C911
MA152WA-X
27k
22/16
R952
0
MUTING_CONT
3.3K
Q9052
UN2211-X
C912
2.2/50
Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.
R910
FR-
FR+
RR-
RR+
RL+
RL-
FL+
FL-
1k
GND
L901
Q1452
KTD1304-X
Q2451
KTD1304-X
C956C957C958C959
C952
0.01
C953
10/16
C954
4.7/25
C901
QEZ0723-338
D901
1N5401-F64
QQR1640-001
R1453
R1454
R2453
R2454
RB160M-30-X
RB160M-30-X
RB160M-30-X
D968
D967
D966
180
180
180
180
RB160M-30-X
RB160M-30-X
RB160M-30-X
D965
D964
D963
FL-
0.047
C3451
RB160M-30-X
RB160M-30-X
D962
D961
RL+
RL-
FL+
0.001
C3452
C950
RR-
100p
C2451
47/16
RR+
D952
100p
100p
100p
C1451
C2452
C1452
Q953
UN2213-X
Q954
UN2113-X
UDZS11B-X
FR+
FR-
CN901
QNZ0611-001
CN345
QNN0490-001
IC951
TB2901HQ
C961
C962
C963
C964
C965
C966
C967
C968
SHEET 2
2-3
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