Sony CDX-GT420U / CDX-GT424U / CDX-GT427UE / CDX-GT470U / CDX-GT470US Service Manual ▷ View online
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
25
25
For Schematic Diagrams.
Note:
• All capacitors are in
• All capacitors are in
μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in
Ω and
1
/
4
W or less unless otherwise
specifi ed.
• f :
internal
component.
•
C : panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
•
A : B+ Line.
•
B : B– Line.
•
H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
(
)
:
AM/MW/LW/SW
<
> : CD PLAY
*
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
: CD PLAY
F :
FM
f :
AM/MW/LW/SW
L :
AUX
c :
USB
• Abbreviation
EA
EA
: Saudi Arabian model
IND
: Indian model
MX
: Mexican model
RU :
Russian
model
For Printed Wiring Boards.
Note:
•
•
X : Parts extracted from the component side.
•
Y : parts extracted from the conductor side.
• a
:
Through
hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• Waveforms
– MAIN Board –
– MAIN Board –
• Indication of transistor.
• Abbreviation
EA :
EA :
Saudi
Arabian
model
IND :
Indian
model
MX :
Mexican
model
RU :
Russian
model
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
C
B
These are omitted.
E
Q
C E
B
These are omitted.
These are omitted.
C B
E
1.1 Vp-p
8.664 MHz
0.7 Vp-p
32.768 kHz
1.5 Vp-p
11.06 MHz
0.2 V/DIV, 10
μsec/DIV
0.5 V/DIV, 0.1
μsec/DIV
0.5 V/DIV, 0.1
μsec/DIV
IC50 (XTI)
IC501 (XIN)
IC501 RH (OSC IN)
Note: The components identifi ed by mark
0 or dotted
line with mark
0 are critical for safety.
Replace only with part number specifi ed.
Ver. 1.1
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
26
26
1
A
B
C
D
E
F
G
H
I
2
3
4
5
6
7
8
9
10
11
12
13
IC602
IC401
IC501
IC50
IC805
IC803
IC804
IC681
IC300
A
KEY BOARD CN901
R535
R538
R540
GT420U/GT424U
/GT470U:EA
/GT470U:EA
GT470U
/GT470US
/GT470US
GT420U/GT424U
/GT427UE
/GT427UE
EXCEPT
AEP,UK,RU
MODEL
AEP,UK,RU
MODEL
EXCEPT US
/GT427UE
/GT427UE
R542
R543
R545
FM(200k)
MW(10k)
FM(50k)
MW(9k)
E,IND,MX MODEL
C15
C999
AEP,UK,RU
MODEL
MODEL
AEP,UK,RU
MODEL
MODEL
AEP,UK,RU
MODEL
MODEL
EXCEPT
AEP,UK,RU
MODEL
AEP,UK,RU
MODEL
C11
C10
R522
R537
R539
R541
R544
C704
C70
5
YEL
C31
3
Q420
Q50
R447
R448
C445
C444
D491
R604
C424
C423
C426
L370
C452
C419
R517
R519
R491
JC500
R523
C432
R524
R531
R412
R532
JC413
JC700
C505
D702
R534
C703
D704
D707
R703
R704
R702
Q701
D706
AEP,UK,RU
MODEL
MODEL
AEP,UK,RU
MODEL
MODEL
R70
6
Q702
Q440
R708
R70
7
Q1
R1
JC412
R3
R2
R4
R5
R8
R9
C307
C305
R371
R370
R601
C309
R502
D2
C3
R10
C6
C7
JC1
R504
C362
JC504
Q452
C301
C325
C330
C304
C706
R547
C707
JC503
L410
R402
R401
C8
C702
R431
C418
Q401
Q402
C320
R403
R404
R550
R451
R301
C317
Q51
L4
C506
R303
Q411
Q412
R680
C31
8
C312
C507
R61
C58
EXCEPT
GT427UE
GT427UE
C51
C53
C50
R15
L50
L2
R52
R57
L3
R55
R54
C52
C56
C55
C54
R53
R60
C443
C57
C953
R12
R13
C361
Q492
Q491
C315
L409
R58
R558
JC28
R449
Q3
Q601
Q602
D602
D603
C494
L902
R452
R430
JC30
JC29
C412
C48
4
C454
R485
JC31
C434
R603
L901
C493
Q605
JC410
L401
R515
C827
R849
D802
R824
D80
3
Q807
L407
R825
JC506
R838
R902
R903
R840
R830
C826
R823
R828
R826
C810
C814
JC400
R905
C813
R827
Q80
6
R831
C41
5
R829
R848
L405
R837
C811
JC507
R518
R846
R841
R904
D805
Q808
R847
3
4
1
6
C816
C808
R822
C824
C812
C515
C51
4
R405
R844
D501
R501
R503
C319
C501
R562
R505
R507
R508
R509
R510
R512
R511
R513
R564
R565
C40
2
C503
R302
R351
L406
D353
R350
R60
0
C600
R549
L805
C823
D152
D15
1
C154
C155
D15
6
C157
L151
(CHASSIS)
R152
R151
R153
R154
R155
C60
D101
D104
R952
R95
1
R555
GT427UE
EXCEPT
GT427UE
GT427UE
C516
R548
R551
JC502
R552
R553
R554
R557
JC501
C508
C509
R567
R566
C51
1
C51
0
C513
R559
R560
C512
R561
D105
D153
R83
2
D102
D103
R83
4
R83
3
C462
JC491
JC490
Q432
R450
Q460
Q470
R462
R472
JC411
R471
R461
R421
R442
JC440
R473
C473
R463
C463
C472
R701
D112
D111
D110
D113
D109
D107
D106
D108
C832
R842
R843
R845
C853
Q809
Q810
Q811
R851
R852
D807
R156
R157
R107
R999
L701
L450
R853
L5
C502
C504
C681
C682
S501
FREQUENCY
SELECTOR
TU1
JW64
D607
JW11
JW122
JW79
S103
S103
RESET
X501
JW62
JW133
C303
JW75
JW128
JW97
JW96
D303
L803
D304
JW48
JW71
D308
D307
JW5
1
JW68
JW53
JW110
J370
(REMOTE IN)
JW137
JW102
JW94
JW72
JW5
6
JW57
JW31
JW58
JW30
JW132
JW6
6
D311
D312
JW121
JW104
JW1
30
JW105
D310
JW25
C623
JW3
8
C624
C1
JW70
X50
C421
R705
D302
JW112
JW134
D301
C81
8
C701
JW46
C2
C5
C441
C683
JW52
JW5
JW10
J1
(ANTENNA)
JW24
JW2
1
JW32
JW22
L801
JW20
JW60
JW63
C461
JW15
JW95
JW34
JW3
JW92
JW44
C47
1
JW35
JW126
C822
1
3
JW65
JW80
JW81
JW82
JW86
C407
CN350
C406
D309
J652
D306
D30
5
JW13
JW119
JW2
8
JW127
JW118
JW85
JW109
X502
GT470U/
GT470US
GT470US
JW43
L300
JW42
C363
GT427UE
AEP,UK,RU MODEL
AEP,UK,RU MODEL
EXCEPT
AEP,UK,RU
MODEL
AEP,UK,RU
MODEL
US/GT427UE
C364
JW111
JW135
JW103
JW88
JW89
JW107
JW131
JW125
C61
JW114
JW27
C491
JW2
JW1
JW23
JW4
JW36
AEP,UK,RU MODEL
JW37
JW61
JW26
L802
C151
C152
C15
3
JW29
JW84
JW90
JW136
JW14
C401
JW54
JW69
JW6
7
JW129
JW100
C485
JW91
C817
C819
JW116
JW120
JW98
JW99
JW108
JW117
JW33
JW9
JW47
JW6
JW55
JW50
JW49
JW113
JW59
YEL
JW76
JW77
JW87
CN370
JW7
JW8
JW106
JW9
3
JW1
6
JW39
JW40
JW41
JW78
JW123
JW124
JW101
JW83
C409
C314
C316
C306
C308
C431
C451
C486
CN300
F901
JW141
JW142
JW143
JW144
JW145
CD
MECHANISM
UNIT
(MG-101I)
JW45
C809
X501
C403
AUDIO OUT
REAR
L
-1
-2
R
US,E,EA,IND,MX MODEL
AEP,UK,RU MODEL
1-874-914-
11
3
4
1
6
CN352
5-3. PRINTED WIRING BOARD – MAIN Section –
•
: Uses unleaded solder.
Ref. No. Location
• Semiconductor Location
D2
E-2
D101
H-4
D102
H-4
D103
H-4
D104
H-3
D105
I-4
D106
H-3
D107
H-2
D108
H-3
D109
H-2
D110
G-3
D111
H-3
D112
H-3
D113
H-3
D153
I-4
D156
H-2
D301
C-7
D302
C-7
D303
C-8
D304
C-8
Ref. No. Location
D305
D305
C-5
D306
C-5
D307
C-5
D308
C-6
D309
C-6
D310
C-6
D311
C-7
D312
C-6
D353
F-8
D491
D-5
D501
H-3
D602
B-9
D603
B-9
D607
C-8
D702
C-7
D704
C-7
D706
C-8
D707
D-8
D802
F-9
D803
F-9
Ref. No. Location
D805
D805
E-8
D807
G-9
IC50
G-2
IC300
B-5
IC401
D-3
IC501
F-6
IC602
F-7
IC681
D-5
IC803
F-9
IC804
H-8
IC805
E-8
Q1
D-2
Q3
E-2
Q50
G-2
Q51
G-2
Q401
E-5
Q402
D-5
Q411
E-5
Ref. No. Location
Q412
Q412
E-5
Q420
B-4
Q432
B-3
Q440
B-3
Q452
B-3
Q460
C-3
Q470
C-3
Q491
D-5
Q492
D-5
Q601
B-9
Q602
B-9
Q605
B-9
Q701
C-8
Q702
C-7
Q806
F-9
Q807
E-9
Q808
E-9
Q809
G-9
Q810
G-9
Q811
H-9
(Page 30)
Ver. 1.1
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
27
27
IC B/D
C701
D303
D304
D301
D302
C303
C316
C306
D305
D306
D307
D308
D309
D310
D311
D312
R301
R302
C319
C623
R604
Q60
5
R603
R706
R708
R701
R703
R704
Q702
Q701
D607
Q492
C491
R491
R600
R463
R473
C624
Q60
1
Q602
R601
R680
JC29
JC30
JC31
R303
JC490
JC700
IC681
Q491
C703
C702
C704
C705
C317
C318
C325
C473
C472
C454
C434
C463
C462
C301
C444
C424
C330
C304
C305
C307
C309
C682
C681
R705
R707
R702
C313
C314
C315
C320
C312
C308
L902
L901
C683
C600
CN300
IC602
L300
C707
L701
S103
F901
D704
D702
D706
C706
D707
IC300
D491
D603
D602
5-4. SCHEMATIC DIAGRAM – MAIN Section (1/3) –
• See page 32 for IC Block Diagram.
(Page 28)
(Page 29)
Ver. 1.1
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
CDX-GT420U/GT424U/GT427UE/GT470U/GT470US
28
28
IC B/D
IC B/D
R442
R421
R451
R431
C441
C421
C451
C431
X50
R52
R53
R1
R2
R3
R10
R8
R9
R58
R57
Q440
Q420
Q452
Q432
R447
R448
R449
R450
R12
R13
R15
Q1
L50
R430
R452
R461
R471
R462
R472
C485
R154
R153
R155
D152
D151
C818
C953
R403
R404
Q401
Q402
Q411
L803
JC410
JC411
R412
JC412
JC413
JC491
JC440
JC1
C152
Q460
Q470
Q412
C822
C999
C445
C443
C426
C423
C484
C452
C432
C6
C7
C3
C362
C361
C8
C50
C55
C54
C823
C155
C154
C56
C57
C10
C58
L805
R999
R107
C157
R157
R156
L151
R152
R151
C153
C151
CN370
CN352
R952
R951
R4
R5
L5
L2
L3
R60
C11
C51
C52
C53
C52
C53
C60
C61
R558
C486
C494
C493
R485
C461
C471
C363
C364
R832 R833 R834
C2
C5
L4
C1
TU1
J1
R61
JC28
J652
Q50
Q51
IC401
L450
R54
R55
C15
IC50
D156
D105
D109
D110
D106
D108
D113
D107
D111
D112
D15
3
D102
D101
D104
D103
D2
Q3
5-5. SCHEMATIC DIAGRAM – MAIN Section (2/3) –
• See page 25 for waveform. • See page 32 for IC Block Diagrams.
(Page 31)
(Page 27)
(Page 29)
Ver. 1.1
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