Sony CDX-GT400 / CDX-GT40W / CDX-GT450 / CDX-GT450S Service Manual ▷ View online
17
17
CDX-GT40W/GT400/GT450/GT450S
CDX-GT40W/GT400/GT450/GT450S
83
RFO
RF AMP,DIGITAL SERVO,
DIGITAL SIGNAL PROCESSOR
IC2
89
RFEQO
3
RFRP
6
TEI
88
RFI
RFRPI
2 RFZI
7 TEZI
9 F0O
PD1
PD2
E
F
I-V AMP
PD
LD
DETECTOR
81
AGCI
82
94
96
95
97
98
TNI
FPI1
FNI1
FPI2
FNI2
TPI
VRO
91 LDO
92
MDI
(FOCUS)
(TRACKING)
2-AXIS DEVICE
OPTICAL
PICK-UP BLOCK
(KSS1000E)
• Signal Path
: CD PLAY
LASER DIODE
M
M
M
18
17
VO3–
VO3+
14
13
VO1+
VO1–
12
11 VO2–
VO2+
10
9
VOL+
VOL–
FWD
REV
1
28
OPIN4– 26
OPIN4+ 27
OPOUT4 25
10 TRO
OPIN3– 23
OPIN3+ 24
OPOUT3 22
12 FMO
OPOUT1 4
13 DMO
OPOUT2 7
MUTE 21
BIAS 20
16
15
VO4–
VO4+
M903
(LOADING)
M901
(SPINDLE)
M902
(SLED)
FOCUS/TRACKING COIL DRIVE,
SLED/SPINDLE/LOADING
MOTOR DRIVE
IC1
51
PIO3
48
PIO0
36
MSTBY
58
ZDET
37
/RST
43
/CCE
42
BUCK(CLK)
41
BUS3(SI)
CD-L
MAIN
SECTION
A
30
LO
27
RO
R-CH
27 DEC_SSTBY
15 CD_ZDET
15 CD_ZDET
14 CD_XRST
13 CD_XCCE
53 MEC_SELFSW
45 MEC_INSW
42 MEC_LIMIT
12 CD_BUCK
11 CD_BUS3
40
BUS2(SO)
10 CD_BUS2
39
BUS1
8
CD_BUS1
38
BUS0
7
CD_BUS0
81 X1
80 X0
MEC LOAD
43
DRVON
6
MEC EJECT
44
CD
SYSTEM CONTROL
IC3
+1.5V REG
IC6
SYSTEM CONTROL
IC501 (1/3)
37 DEC_XMUTE
30 DEC_INT
SW2
(SELF)
46 MEC_DSW
SW1
(DOWN)
SW3
(DISC IN)
SW4
(LIMIT)
56
UNISI
25
RXD
57
UNISO
58
UNICKI
50
BUS_ON
51
BU_IN
75
RSTX
61
EJECT_OK
67
MECON_CHK
1
CDON_1500MV
1.5V_ON
63
MECON
64
CDON
66
ZMUTE
60
A_ATT
26
TXD
PD1
E
F
VC
VC
VC
LOAD
LD
MON OUT
FCS+
FCS–
TRK+
TRK–
PD2
AUTOMATIC
POWER
CONTROL
Q21
+1.5V ON/OFF
SWITCH
Q2,3
• R-ch is omitted due to same as L-ch.
24
23
X2
16.934MHz
X1
12MHz
XI
XO
MAIN
SECTION
B
EJECT_OK_SW
UNI SI
UNI SO
A-ATT
59
LINKOFF
LINK ON/OFF
UNI CLK
BUS ON
B/U CHECK
SYS RST
89
CD_ON
VOUT
98
CDM_ON
99
Z-MUTE
MECHA+6V
93
68
CDON_CHK
1
5
VDD
3
CE
SERVO+3.3V
+1.5V
+1.5V
BU+3.3V
84
100
3-1. BLOCK DIAGRAM — CD SECTION —
(Page 18)
(Page 18)
SECTION 3
DIAGRAMS
18
18
CDX-GT40W/GT400/GT450/GT450S
CDX-GT40W/GT400/GT450/GT450S
3-2. BLOCK DIAGRAM — MAIN SECTION —
1 ANT
7
6
9
10
8
11
SE2L
ELECTRONIC VOLUME
IC401
J1
(ANTENNA)
J901
AUX
TU1
(TUNER UNIT)
POWER AMP
MULTI REGULATOR
IC300
SYSTEM CONTROL
IC501 (2/3)
RESET
IC602
S103
RESET
AUDIO IN SELECT
IC301
Q301
Q300
CN300
CN410
8 SE2R
R-CH
BATT
FL
9 SE1L
10 SE1R
4
3
3
10
VCC8.3V
11
VDD5V
15
E2PVDD
13
SCL
14
SDA
6
S-METER
7
TU_MUTE
16
E2PSCL
17
E2PSDA
39 VSM
17 FUNC-SEL
AU+8V
R-CH
R-CH
TU+5V
BU+3.3V
BU+3.3V
12 TUATT
25 EEP_CKO
24 EEP_SDA
24 EEP_SDA
77 RESET
L
R
CD-L
R-CH
R-CH
11 DIFEL
13 DIFFR
R-CH
R-CH
L
R
5
3
3
RR+
RR–
9
7
7
RF+
RF–
29
27
27
SW1
R-CH
SW2
35
VP
20
VP1
6
VP2
BATT
30
37
37
REG1
REG2
31
33
33
REG3
REG4
34
REG5
TU+5V
18
OUTRR1
21
MUTE
2 SDA
AU+8V
U-COM+5V
SERVO+3.3V
MECHA+6V
MECHA+6V
DISP+B
4 SCL
SDA
SCL
16 ACGND
22 STB
25 DIAG
25 DIAG
AU+8V
15
13
7
10
12
11
16
1
9
2
4
3
5
6
22
23
23
SCL
SDA
SCL
SDA
25
SAIN
26
SAOUT
SCL
SDA
44
SA_IN
33
I2C_CKO
34
I2C_SIO
45
SA_CKO
9
VOL ATT
5
BEEP
26
AMPSTB
8
DIAG
54
BUIN
OPEN-MUTE
DOOR SW
SYS RST
BUS ON
UNI CLK
UNI SO
UNI SI
B/U CHECK
A-ATT
LINK ON/OFF
73
TESTIN
ATT
12 IN_RR
IN_RF
FL+
FL-
RL+
RL-
FR+
FR-
RR+
RR-
AMP-R
ANT-R
ACC
TEST
11
19
OUTLR1
MUTE
Q440
MUTE
Q430
MUTE CONTROL
Q491,492
58
UNISI
59
UNISO
60
UNISCK
87
BUSON
88
SYSRST
10 B/U-C
8 DATA OUT
9 IN DATA
11 CLK-IN
12 BUS IN
13 RST
3
5
4
7
6
2
1
3
BATT
6
DATA I/O
4
CLK
1
BUS ON
2
RST
72
ACC_IN
ACC DETECT
Q702
+5V REG
Q3
BU+3.3V
BATT
U-COM+5V
BATT
+3.3V REG
IC502
BATTERY CHECK
Q605
BUS ON
CONTROL
Q601
BUS INTERFACE CONTROL
IC601
MUTE
Q470
TEL-MUTE
74
TELATT
TEL-ATT DETECT
Q701
14
ILL
75
ILLUIN
ILL DETECT
Q703
SCL
SDA
D491
FU601
R-CH
16
OUTLR2
20
OUTLF
17
OUTRF
R-CH
L
R
REAR
PJ451
FRONT
AUDIO
OUT
R-CH
L
R
BUS
AUDIO IN
SUB OUT
(MONO)
BUS
CONTROL IN
D400
D511
D494
D493
D602
CD
SECTION
A
KEY
SECTION
C
CD
SECTION
B
TH400
CNJ400
8
BATT
LINK ON/OFF
CONTROL
Q600
12
1
OUT
U COM+3.3V
2 IN
100
86
• Signal Path
• R-CH is omitted due to same as L-CH.
: CD PLAY
: TUNER (FM/AM)
: AUX
: BUS AUDIO
(Page 17)
(Page 19)
(Page 17)
19
19
CDX-GT40W/GT400/GT450/GT450S
CDX-GT40W/GT400/GT450/GT450S
3-3. BLOCK DIAGRAM — KEY SECTION —
3-4. CIRCUIT BOARDS LOCATION
KEY
ACKNOWLEDGE
SWITCH
Q501
82
83
41
28
29
27
40
52
76
71
43
DISPLAY
CONTROL
IC901
KEYIN0
CLK
CE
LED_SO/FLS_SO
LCD_SCK
LCD_CE/FLS_SI
DIMMER
KEYIN1
KEYACK
XKEYON
RC_IN1
RC_IN0
3 AREASEL0
NOSE_SW
2 OUT
OSCIN
OSCOUT
X500
18.432MHz
S801
77
78
76
1
COM1
COM4
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
LED930,931
LCD
BACK LIGHT
D510
S501
FREQUENCY
SELECT
10K
9K
J370
(REMOTE IN)
BU+3.3V
GT450/GT450S MODEL
7
|
60
65
|
68
|
S1
S54
|
CL
DI
CE
DISP+B
LSW901,903-905,907-910,
LED902,911-924
(KEY ILLUMINATE)
LED801,802
(DISC IN/
Z
)
(
)
KEY MATRIX
LSW901,903-905
LSW907-910
S902,911-920
48
47
SYSTEM CONTROL
IC501 (3/3)
RE-0
RE-1
79
80
XIN
XOUT
X501
32.768KHz
DIMMER
SWITCH
Q916-918
LED
DRIVER
Q911-915
ROTARY
ENCODER
7
S102
(FRONT PANEL DETECT)
CN801
CN901
REMOTE CONTROL
SIGNAL RECIVER
IC971
DOOR INDICATOR
B+ SWITCH
Q589,590
DIMMER
2
GREEN1
3
GREEN2
4
BLUE
79
AMBER1
80
AMBER2
46
DOOR IND
64
SIRCS
IR
Z
RE901
PUSH SELECT
(VOLUME)
DOOR SW
MAIN
SECTION
C
18
18
+
MAIN board
SUB board
SENSOR board
SERVO board
JACK board
KEY board
tuner unit
(TU1)
(TU1)
(Page 18)
20
20
CDX-GT40W/GT400/GT450/GT450S
CDX-GT40W/GT400/GT450/GT450S
• 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 µF unless otherwise noted. (p: pF)
• All capacitors are in µF 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.
•
• 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.
• Voltages and waveforms are dc with respect to ground
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• CD mechanism section (1/2), (2/2)
no mark : CD PLAY
• Main (1/2), (2/2) and Key sections
no mark : FM/AM
no mark : CD PLAY
• Main (1/2), (2/2) and Key sections
no mark : FM/AM
<
> : CD PLAY
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 MΩ).
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/AM
L
: BUS AUDIO
g : AUX
• Abbreviation
CND : Canadian model.
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.
Note:
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Q
C
These are omitted
E
B
E
These are omitted
C
B
C
These are omitted
B
E
• Abbreviation
CND : Canadian model.
• Waveforms
1
IC2 5 (FEI)
Approx.
1Vp-p
1Vp-p
0 V
0.6 Vp-p
16.9344 MHz
Approx. 100 mVp-p
50 mV/DIV, 5 msec/DIV
0.5 V/DIV, 0.5
µ
sec/DIV
2
IC2 6 (TEI)
200 mV/DIV, 5 msec/DIV
6
IC2 oh (FPI2),
0.5 V/DIV, 0.5
µ
sec/DIV
Approx. 400 mVp-p
3
IC2 wd (XI)
0.2 V/DIV, 0.2
µ
sec/DIV
7
IC3 ia (X1)
0.5 V/DIV, 0.2
µ
sec/DIV
1.1 Vp-p
12 MHz
4
IC2 ia (RFI)
0.5 V/DIV, 0.5
µ
sec/DIV
5
IC2 of (FNI2), og (FNI1)
1.5 Vp-p
oj
(FPI1)
1.5 Vp-p
0 V
— SERVO Board —
(CD PLAY)
— MAIN Board —
0.8 Vp-p
32.768 kHz
1
IC501 i; (XOUT)
3.4 Vp-p
18.432 MHz
2
IC501 id (OSCOUT)
0.5 V/DIV, 0.1
µ
sec/DIV
0.2 V/DIV, 20
µ
sec/DIV
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