Sony CDX-GT450U / CDX-GT454US Service Manual ▷ View online
CDX-GT450U/GT454US
13
3-10. OPTICAL PICK-UP SECTION
3-11. OPTICAL PICK-UP
1
2 optical pick-up section
Note: Be careful not to touch the lens and hologram
terminal when removing the optical pick-up section.
1 tapping screw
(P
1.4)
2 leaf spring (OPS)
3 rack
5 optical pick-up
4 lead screw assy
CDX-GT450U/GT454US
14
SECTION 4
DIAGRAMS
• Waveforms
– MAIN Board –
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF) 50
• All capacitors are in μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specifi ed.
• f : Internal component.
• C : Panel designation.
• 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.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
• 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.
no mark : FM
(
(
) : AM or MW
<
> : 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 :
J :
CD
F :
FM
f
: AM or MW
L :
AUX
c :
USB
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• a :
• 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.)
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.
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Note:
The components identi-
fi
The components identi-
fi
ed by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specifi ed.
cal for safety.
Replace only with part
number specifi ed.
Note:
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une pièce portant le nu-
méro spécifi é.
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une pièce portant le nu-
méro spécifi é.
2.9 Vp-p
32.768 kHz
3.5 Vp-p
7.92 MHz
1 V/DIV, 20 ȝsec/DIV
2 V/DIV, 50 nsec/DIV
1
IC501
qa (XOUT)
2
IC501
qd (OSCOUT)
0.05 Vp-p
4 MHz
0.05 V/DIV, 50 nsec/DIV
3
IC001
qh (XTAL1)
CDX-GT450U/GT454US
CDX-GT450U/GT454US
15
15
4-1. BLOCK DIAGRAM – MAIN Section –
2
4
11
12
12
24
23
23
18
6
8
9
8
9
19
21
21
7
5
17
27
4
TXD
SP_CLK
SP_DATA
RXD
WAKE_UP
Z_MUTE
CD_ON
CDM_ON
WAKE_UP
Z_MUTE
CD_ON
CDM_ON
SYS_RST
EJECT_OK
VBUS_ON
EJECT_OK
VBUS_ON
A_ATT
BU_CHECK
BU_CHECK
VDD_3.3V
BU_3.3V
DR_6V
BU_3.3V
DR_6V
R-CH
R-CH
R-CH
R-CH
R-CH
BU+3.3V
BU+3.3V
SERVO+3.3V
R-CH
5 AUX_LCH
7 AUX_RCH
7 AUX_RCH
MC_RX
22
MC_TX
24
WAKE_UP
39
Z_MUTE
40
CD_ON
37
CDM_ON
38
RESET
12
SYSRST
20
FW_RXD
VBUS_ON
BU+3.3V
51
FW_TXD
32
FW_CLK
31
CNVSS
33
9
FW_BUSY
34
VOUT
1
VIN 2
14
D731
4 FMIN1
3 FMIN2
3 TU_LCH
6 AUX_GND
ELECTRONIC VOLUME
IC401
J1
(ANTENNA)
PHASE LOCKED LOOP
(PLL)
IC001
L6
FM MIX
L2
CN701 (1/2)
CN402
CD
MECHANISM
UNIT
(MG-101N)
(1/2)
I2C BUS CONTROLLED
POWER AMP/MULTIPLE
VOLTAGE REGULATOR
IC301
SYSTEM CONTROL
IC501 (1/2)
RESET
IC403
CN301
4 TU_RCH
33 AU_IN_FL
AU_IN_FR
AU_IN_RL
AU_IN_RR
AU_IN_SUB
AU_OUT_LCH
AU_OUT_RCH
AU_IN_RL
AU_IN_RR
AU_IN_SUB
AU_OUT_LCH
AU_OUT_RCH
31
34
R-CH
30
32
R-CH
27
R-CH (FRONT)
R-CH (REAR)
R-CH (REAR)
BATT
R-CH
8
9
9
18
SCL
19
SDA
16 XTAL1
15 XTAL2
AU_FR_CH
AU_FL_CH
AU_RR_CH
AU_RL_CH
AU_SUB_CH
AU_IN_RCH
AU_IN_LCH
LOUT
ROUT
J901
AUX
X1
4MHz
S401
RESET
5
3
3
OUT-FL+
GT454US
GT450U
OUT-FL–
9
7
7
OUT-RL+
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
R-CH (REAR/SUB)
35
37
37
AU_OUT_FR
AU_OUT_RR
R-CH
40
AU_OUT_SL
39
AU_OUT_SR
4 I2C_SCK
AUDIO+8.5V
SERVO+3.3V
MECHA+6V
PANEL+B
SERVO+3.3V
MECHA+6V
PANEL+B
2 I2C_SIO
16 BEEP
22 STB
25 DIAG
22 STB
25 DIAG
7
10
12
11
16
1
9
9
2
4
3
6
22
23
23
I2C_SCK
I2C_SIO
I2C_SCK
I2C_SIO
I2C_SCK
I2C_SIO
I2C_SCK
I2C_SIO
I2C_SIO
I2C_SCK
I2C_SIO
29
I2C_SCK
49
SA_CLKOUT
48
SA_DATAIN
30
I2C_SIO
58
ATT
28
BEEP
60
AMPSTB
59
DIAG
12 IN-FL
FL+
FL–
FL–
L
R
RL+
RL–
RL–
FR+
FR–
RR+
RR–
FR–
RR+
RR–
ANT-REM
BATT
ACC
36
AU_OUT_FL
11 IN-RL
38
AU_OUT_RL
MUTE
Q406
MUTE DRIVE
Q407,409
57
ACC_IN
19
BUIN
ACC DETECT
Q301
+3.3V REG
IC402
MUTE
Q404
29
AMP-REM
5 AMP-REM
13
TEL-ATT
56
TELATT
TEL-ATT DETECT
Q303
1 AMRFIN
REAR/SUB
SP_CLK
SP_DATA
D401
D403
D404
FU601
37
BU+B
B.U+5V
FRONT
R-CH
L
J402
R
-1
-2
-3
-4
AUDIO
OUT
MUTE
Q402
BU+3.3V
BATT
5
4
BACK-UP
CHECK
Q807,808
BACK-UP
CHECK
Q802,D806,807
MECHA+6V
BU3.3V
6
3
FLASH_W
BUSY
7
CLK
2
RESET
TXD
4
1
5
RXD
CN501
FLASH
PROGRAMMING
BU+3.3V
B.U+5V
GT454US
REAR/SUB
R-CH
L
R
J401
-1
-2
AUDIO
OUT
28
13
R-CH
12
9
8
6
R-CH
SLJQDO PDWK
R-CH LV RPLWWHG GXH WR VDPH DV L-CH.
AM RU MW
: CD
: FM
: AUX
CDX-GT450U/GT454US
CDX-GT450U/GT454US
16
16
4-2. BLOCK DIAGRAM – DISPLAY Section –
X502
32.768kHz
10
11
94
1
2
2
100
95
SYSTEM CONTROL
IC501 (2/2)
LCD DRIVER,LED CONTROL
IC901
KEYIN1
CLK LCD
CE
CE
LCD_SO
LCD_CLK
LCD_CE
KEYIN0
92 KEYACK1
82 RE-IN0
RE0
RE1
RE1
81 RE-IN1
XOUT
XIN
X501
7.92MHz
15
13 OSCOUT
3 NOSE_SW
OSCIN
63
64
62
DIMMER 2
COM4
I
COM1
LCD901
LIQUID
CRYSTAL
DISPLAY
PANEL
5
|
50
55
60
51
|
54
SEG48
I
SEG1
DATA
PANEL+B
KEY MATRIX
LSW905–912,
S901–907
(VOLUME)
PUSH ENTER/SELECT
RE901
ROTARY
ENCODER
4 SIRCS
REMOTE
CONTROL
SIGNAL
RECEIVER
IC902
Q901
LCD BACK LIGHT
DIMMER
CONTROL
LED903,905,907,909,
910,912,914,916,919,
921,925,928,929,932,
910,912,914,916,919,
921,925,928,929,932,
934,936,938,940,
LSW905 (1/2)–LSW912 (1/2)
LED901
(LCD BACK LIGHT)
3
26
SYNC_OUT
BATT
52
USB_OVR
50
USB ON
L602
USB VBUS POWER SUPPLY
IC601
CD
MECHANISM
UNIT
(MG-101N)
(2/2)
USB D+
USB D–
USB D–
9 HSDCTL
10 FLG
8 SYN/EN
2 VIN
12
HSDSW
13
HSDSW
1
1
CN701
(2/2)
15
3
2
2
VBUS
D+
D–
D–
4
CN902
(USB)
18 RC_IN1
91 KEYACK0
97 RC_IN0
J801
(REMOTE IN)
6LJQDO3DWK
: USB
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