Sony CDX-GT420IP / CDX-GT42IPW / CDX-GT44IP Service Manual ▷ View online
21
21
CDX-GT42IPW/GT44IP/GT420IP
CDX-GT42IPW/GT44IP/GT420IP
5-1. BLOCK DIAGRAM — MAIN SECTION —
SECTION 5
DIAGRAMS
• Signal Path
• R-CH is omitted due to same as L-CH.
11
15
15
22
24
24
26
16
5
7
6
21
27
9
25
18
19
19
8
1,2
AU_LCH
AU_RCH
UNI_SO
UNI_SI
UNI_CLK
Z_MUTE
Z_MUTE
CD_ON
CDM_ON
SYS_RST
EJECT_OK
BUS_ON
BU+3.3V
A_ATT
BU_IN
D_+3.3V
A_+3.3V
A_+3.3V
BU_+3.3V
DR_+6V
R–CH
R–CH
R–CH
R–CH
R–CH
SERVO +3.3V
S103
RESET
BU_+3.3V
MECHA +6V
MECHA +6V
R–CH
R–CH
9 AUX–LCH
7 AUX–RCH
8
UNISO
59
UNISI
58
UNISCK
60
Z-MUTE
61
CD_ON
91
CDM_ON
92
RESET
77
SYSRST
88
BUSON
BU +3.3V
96
VOUT
1
VDD 2
D609
D353
D251
: AM/MW/LW
: CD PLAY
: FM
: AUX
: IPOD
1 ANT
4 TU–LCH
AUX–GND
ELECTRONIC VOLUME
IC401
J1
(ANTENNA)
TU1
(TUNER UNIT)
CN350
CD
MECHANISM
UNIT
(MG–101TC)
I2C BUS CONTROLLED
POWER AMP/MULTIPLE
VOLTAGE REGULATOR
IC300
SYSTEM CONTROL
IC501 (1/2)
RESET
IC602
BUS INTERFACE
IC601
CN300
3 TU–RCH
6 CD–LCH
5 CD–RCH
R–CH (FRONT)
R–CH (REAR)
VOLATT
R–CH (REAR)
VOLATT
BATT
R-CH
4
3
13
TU–SCL
14
TU-SDA
6
S–METER
5
QUALITY
7
TU-MUTE
16
E2P–SCL
17
E2P–SDA
39 VSM
38 QUALITY
10 VCC (+8.3V)
11 TU–VDD (TU+5V)
15 E2P-VDD
15 E2P-VDD
AUDIO +8.3V
TU+5V
B.U +3.3V
12 TU ATT
55 FUNC SEL
25 EEP_CKO
24 EEP_SIO
24 EEP_SIO
L–CH
IPOD–AUD–GND
IPOD–AUD–R
IPOD–AUD-L
R–CH
J901
AUX
5
3
3
OUT-FL+
OUT-FL–
9
7
7
OUT-RL+
OUT-RL–
27
R-CH
ANT-REM
35
VP
BATT
20
VP1
6
VP2
30
AUDIO+B
31
33
33
SERVO+3.3V
MECHA+6V
34
PANEL+B
TU+5V
26
24
24
OUT–FR
OUT–RR
R–CH
R-CH
21
22
22
SUBOUT L
SUBOUT R
28
MUTE
4 SCL
AUDIO +8.3V
SERVO+3.3V
MECHA+6V
MECHA+6V
PANEL+B
2 SDA
16 BEEP
22 STB
25 DIAG
25 DIAG
AUDIO +8.3V
7
10
12
11
16
1
9
2
4
3
6
29
30
30
SCL
SDA
19
SAOUT
18
SADA
17
SACLK
15
SACLK
14
SAOUT
46
SAIN
I2C–SCL
I2C–SDA
I2C–SDA
I2C-SCL
I2C-SDA
I2C-SCL
I2C-SDA
I2C–SCL
I2C–SDA
I2C–SDA
VSM
QUALITY
TUATT
EEP–SCL
EEP–SDA
8
TU–ATTIN
9
RDS–OUT
53 TUATTIN
56 DAVN
26 RDS ON
TU–ATTIN
RDS–OUT
33
I2C_SCK
34
I2C_SIO
9
VOL ATT
100
ATT
5
BEEP
8
AMPSTB
7
DIAG
54
BU IN
12 IN-FL
FL+
FL–
L
R
RL+
RL–
FR+
FR–
RR+
RR–
ANT-REM
BATT
ACC
25
OUT–FL
11 IN-RL
23
OUT–RL
MUTE
Q432
MUTE
CONTROL SWITCH
Q491,492
FUNCTION SELECT
SWITCH
Q210
NOISE MASK
SWITCH
Q1
BATT
57
BUSON A
99
ACC_IN
BATTERY CHECK
Q605,D602,603
ACCESSORY CHECK
Q702
TU+5V REG
Q3,D2
BU+3.3V
BU +5V
BU+3.3V REG
IC681
MUTE
Q470
29
AMP-REM
5
AMP-REM
REAR
D491
D493
F901
13
TEL–ATT
98
TELATT
TELEPHONE
ATTENATION CHECK
Q701
37
BU+B
BU+5V
FRONT
GT42IPW/GT420IP
R-CH
L
J652
R
AUDIO
OUT
MUTE
Q440
10 B/U–C
3
BATT
9 DATA IN
8 DATA OUT
UNI SI
UNI S02
UNI CLK
UNI CLK
BUSON A
SYSRST
SYSRST
BU IN
13 RST
12 BUS–IN
11 CLK–IN
AUX/IPOD SELECT
SWITCH
IC210
5 Z0
14
X
4
Z
9
Z–Z1
10
Y–Y1
11
X-X1
3 Z1
12 X0
13 X1
RDS DEMODULATOR
IC50
11
SCL
12
SDA
15
INTN
1
VDDA
7
VDDB
BU+3.3V
16 MPX
13 NSMASK
SDA
SCL
RDS+3.3V
SWITCH
Q50
X50
8.664MHz
10
9 XTI
XTO
DISPLAY
SECTION
A
(IPOD IN)
(1/2)
D260
GT44IP
GT44IP
GT44IP
IC220
GT44IP
(Page 22)
22
22
CDX-GT42IPW/GT44IP/GT420IP
CDX-GT42IPW/GT44IP/GT420IP
• Waveforms
— MAIN Board —
5-2. BLOCK DIAGRAM — DISPLAY SECTION —
• NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
For schematic diagrams.
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
C
: panel designation.
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.)
•
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
<
> : 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.
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
: CD PLAY
F
: FM
f
: AM/MW/LW
L
: AUX
g
: IPOD
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
Q
C
These are omitted
E
B
E
These are omitted
C
B
C
These are omitted
B
E
KEY ACKNOWLEDGE
SWITCH
Q664
X502
32.768kHz
79
80
40
28
29
27
41
52
76
SYSTEM CONTROL
IC501 (2/2)
DISPLAY CONTROL
IC901
KEYIN1
CL
CE
LCD_SO
LCD_SCK
LCD_CE
64
3
SIRCS
OUT
DIMMER
KEYIN0
31 RE-IN0
RE-0
RE-1
32 RE-IN1
KEY ACK
AD_ON
XIN
XOUT
X501
18.432MHz
82
83 OSCOUT
62 NOSE_SW
OSCIN
63
64
62
2
COM4
I
COM1
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
D503
5
|
50
•
55
•
60
51
|
54
S1
I
S48
DI
LCD
BACK LIGHT
SWITCH
Q932
DIMMER
SWITCH
Q931
LED931
PANEL+B
(
)
KEY MATRIX
LSW901–911,
S901–904
(VOLUME)
PUSH SELECT
RE901
ROTARY
ENCODER
BACK LIGHT
1
LCD BACK
LIGHT
(
)
LSW901–911,
LED941,942,
944,945,951–953
KEY
ILLUMINATE
IR
REMOTE CONTROL
SIGNAL RECEIVER
IC971
MAIN
SECTION
A
BATT
(IPOD IN)
(2/2)
BUIN
BUSON A
42
AIN0/INT2
11
INT0
IPOD-CHARGE
IPOD-TX+5V
IPOD-RX+5V
IPOD+3.3V
IPOD DET
UNI SI
1
MOSI
UNI SO2
2
MISO
UNI CLK
3
SCK
SYSRST
4
RESET
41
T1
8
XTAL1
7
XTAL2
14 OC1A
9 RXD
10 TXD
12 INT1
X250
7.3728kHz
IPOD TX+5V
CONTROL SWITCH
Q252,253
IPOD RX+5V
CONTROL SWITCH
Q254,255
IPOD CHARGE
CONTROL SWITCH
IC260
IPOD ADAPTOR
IC250
IPOD DETECT
Q256
D250
D255
BUS ON/OFF
SWITCH
Q258
(Page 21)
0.7Vp-p
32.768kHz
1
IC501
i;
(XOUT)
1.5Vp-p
18.432MHz
2
IC501
id
(OSCOUT)
0.2 V/DIV, 20
µ
sec/DIV
0.5 V/DIV, 0.1
µ
sec/DIV
1Vp-p
8.664MHz
3
IC50
9
(XTI)
0.5 V/DIV, 0.1
µ
sec/DIV
— ATMEL Board —
0.7Vp-p
7.3728MHz
1
IC250
8
(XTAL1)
0.2 V/DIV, 0.1
µ
sec/DIV
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
23
23
CDX-GT42IPW/GT44IP/GT420IP
CDX-GT42IPW/GT44IP/GT420IP
: Uses unleaded solder.
5-3. PRINTED WIRING BOARD — MAIN SECTION —
(Page 30)
1
A
B
C
D
E
F
G
H
I
2
3
4
5
6
7
8
9
10
11
12
13
B
KEY BOARD CN901
A
ATMIL
BOARD
CN261
CDX-GT42IPW/GT420IP
CDX-GT44IP
RED
RED
R614
C10
C11
FMB3
FMB4
R8
L50
R701
GT44IP
GT44IP
GT42IPW
/GT420IP
/GT420IP
GT44IP
GT42IPW/GT420IP
GT42IPW/GT420IP
GT42IPW/GT420IP
GT44IP
GT44IP
GT44IP
GT44IP
R703
R704
R702
Q701
IC50
R537
R573
R564
C51
C53
C50
C52
R55
Q50
C60
R57
R58
L2
L3
R53
R54
C54
C57
C56
C55
R52
Q1
R1
R15
C58
JC50
D704
R673
JC38
R552
L5
R566
C15
R507
R551
R538
R559
R540
C263
C268
C703
D493
C704
C705
D491
C509
IC210
JC260
R9
R672
C302
JC259
JC37
IC401
R481
C155
C445
GT42IPW
/GT420IP
/GT420IP
C997
C998
JC258
R293
C257
R291
R529
R281
R274
R570
R283
R289
L402
R286
D256
D254
JC262
C259
R273
R278
R275
R277
R284
R276
R279
C260
R280
C7
Q256
JC257
JC261
Q3
JC991
JC992
JC256
JC254
IC220
C442
R606
JC13
R607
JC15
C290
1
2
2
3
4
5
6
7
8
9
10
11
12
C291
R423
R445
IC260
1
5
R290
C493
C313
C315
JC500
JC510
D998
L261
D702
R706
C702
Q702
R708
R707
JC990
D602
C494
JC215
D603
L409
C601
R601
JC51
R602
C402
R402
R401
L410
C418
C419
L406
L401
C307
IC602
C305
C231
C309
L403
L407
C417
IC601
C415
L405
JC34
JC35
R351
C916
L251
JC501
D251
R915
R285
R914
R916
JC101
C301
C325
C516
C330
C304
D151
C515
JC36
R910
C440
R525
R520
R534
R557
R544
R556
JC507
JC506
JC505
R524
R523
JC509
JC10
Q253
Q255
Q254
Q252
C261
C266
C265
JC255
R282
JC33
JC32
R555
R568
C320
JC4
C504
R510
R512
R511
R521
R522
IC501
C513
C501
C512
C514
R504
R505
R502
R503
C502
R671
R565
R567
L4
Q664
JC16
L501
JC3
C510
R519
D999
R674
R563
C519
R636
JC18
D353
R600
D2
JC23
D609
C312
D112
D152
(CHASSIS)
C681
C412
C682
Q605
D153
R531
Q491
Q492
R604
R491
JC1
D502
R603
R2
R3
R4
R5
R10
C3
C6
R12
R13
R6
R7
C8
JC5
R232
C154
R152
R155
R151
L151
L901
L902
R533
R532
D113
D252
D109
JC102
JC503
D110
JC504
JC100
JC216
JC12
JC508
R558
R302
C319
C361
C362
R440
R420
R460
R470
R452
R430
R485
C484
R451
R431
JC7
JC6
JC30
JC29
C443
C426
C423
C454
C318
R301
JC8
JC14
JC31
R450
R449
C432
C452
R447
R448
R421
R442
R471
R461
Q460
Q470
C434
R462
R472
C463
C462
C472
C473
JC11
JC9
C444
C424
R526
D503
D253
R294
L1
D260
JC253
R917
C210
C220
R233
R235
R222
R214
R212
JC211
JC217
JC212
R234
C207
C211
R213
Q210
JC210
JC512
JC511
JC213
JC214
C221
R220
R221
R211
R210
C152
C151
R154
R153
JC513
Q432
Q452
Q420
Q440
IC681
JC42
JC24
JC514
R517
R561
R509
R553
C508
C507
JC2
JC40
JC17
L291
TU1
JW8
X50
C61
C1
J652
D607
S103
RESET
JW65
CN250
JW117
CN370
JW101
JW114
IC300
C258
JW126
CN200
JW93
JW99
JW98
D304
D303
D308
C622
D307
D309
JW123
JW112
JW113
C624
JW56
JW66
C683
JW103
JW106
JW107
JW58
JW59
JW60
JW61
D311
D312
JW124
C264
JW64
JW63
JW62
C316
JW68
JW111
C314
JW3
JW89
R705
D301
JW118
JW94
JW97
JW122
JW83
JW105
D302
JW96
C403
JW84
JW41
JW43
C401
C701
JW82
JW28
JW121
JW27
JW26
JW29
C308
JW125
JW22
C306
JW7
JW10
C405
C409
JW36
JW100
JW104
JW21
JW20
JW120
JW67
JW12
JW25
JW102
JW19
JW18
JW50
JW51
JW15
JW72
JW71
JW70
JW69
JW73
JW87
JW78
JW79
JW13
JW76
JW77
X501
JW95
CN350
D310
D306
D305
JW74
JW92
X502
L300
JW91
JW86
JW110
JW81
C491
CN300
C623
JW57
JW2
JW1
JW38
JW23
JW24
C2
C5
JW37
JW17
JW5
JW44
C153
JW30
JW4
JW16
JW14
JW40
JW80
JW6
JW39
JW90
JW11
JW88
JW9
JW31
JW32
JW33
C364
C363
JW85
JW42
C486
JW47
C485
C431
C451
C461
C471
C421
C441
JW52
JW53
JW55
JW46
JW45
JW34
JW35
JW54
C303
JW48
C317
JW49
JW75
JW127
L
R
J1
(ANTENNA)
-1
-2
REAR
AUDIO OUT
L
R
-3
-4
FRONT
CD
MECHANISM
UNIT
(MG-101TC)
1-874-160-
F901
(11)
11
X501
(IPOD)
1
2
3
4
4
(Page 28)
D311
C-7
D312
C-6
D353
F-7
D491
E-5
D493
E-5
D502
H-6
D503
H-5
D602
D-9
D603
D-9
D607
C-8
D609
E-8
D702
C-7
D704
B-7
D998
C-8
D999
B-7
IC50
G-2
IC210
G-3
IC220
F-2
IC260
G-9
IC300
B-5
IC401
D-3
IC501
G-6
IC601
D-9
Ref. No.
Location
D2
E-2
D109
H-3
D110
H-3
D112
H-3
D113
H-4
D151
H-2
D152
H-2
D153
H-2
D251
G-7
D252
H-8
D253
H-8
D254
H-8
D256
H-9
D260
E-8
D301
C-7
D302
C-7
D303
C-8
D304
C-8
D305
C-5
D306
C-5
D307
C-5
D308
C-6
D309
C-6
D310
C-6
• Semiconductor Location
Ref. No.
Location
IC602
F-7
IC681
D-5
Q1
D-2
Q3
E-2
Q50
G-2
Q210
G-4
Q252
H-8
Q253
H-8
Q254
H-8
Q255
H-8
Q256
H-7
Q420
B-4
Q432
B-3
Q440
B-3
Q452
B-3
Q460
C-3
Q470
C-3
Q491
E-5
Q492
D-5
Q605
D-9
Q664
H-5
Q701
C-8
Q702
C-7
Ref. No.
Location
24
24
CDX-GT42IPW/GT44IP/GT420IP
CDX-GT42IPW/GT44IP/GT420IP
IC B/D
IC B/D
D301
D
302
R607
C622
C306
C308
R301
R302 C319
D603
R604
D602
R603
R706
R708
R703
R704
IC681
Q492
C491
R491
D493
D609
JC29
JC30
JC36
R445
R423
Q491
C317
D260
C601
C702
C703
C997
C998
C318
C312
C320
C309
C307
C305
C330
C304
C302
C424
C444
C325
C301
C454
C434
D312
D311
D310
D309
D308
D307
D306
D305
D303
D304
C313
C316
C315
C314
L902
L901
JC31
C303
JC8
JC1
R606
R600
R531
C683
C682 C681
C624
C623
IC602
CN300
R705
D702
C704
C705
D704
D999
D998
R707
R702
R602
R601
JC32
JC33
JC12
JC508
JC511
Q701
Q702
Q605
F901
IC601
D491
IC300
R701
D607
L300
C701
5-4. SCHEMATIC DIAGRAM — MAIN SECTION (1/4) —
• Refer to page 32 for IC Block Diagrams.
(Page 26)
(Page 25)
(Page 27)
Click on the first or last page to see other CDX-GT420IP / CDX-GT42IPW / CDX-GT44IP service manuals if exist.