Sony CDX-GT490U, Service Manual

Page: 21 / 40

CDX-GT49UM/GT490U/GT490US/GT494U
CDX-GT49UM/GT490U/GT490US/GT494U
21
21
4-6.
SCHEMA
TIC DIAGRAM – MAIN Section (3/3) –
• See page 17 for W
aveforms. • See page 25 for IC Block Diagrams.
(Page 19)
K C
8
15
6
G
7
H
13
11
10
12
E B
5
14
I
2
F
9
J A
14
D
3
BOARD
(1/3)
MAIN
2 3
(2/3)
MAIN
BOARD
BOARD
4
MAIN
(2/3)
3
BOARD
CN901
KEY
A
IC B/D
IC B/D
0
0
0
0
0
00
0
0
0 0
0
4.1 4.1
0 0 0
4.1 4.1 4.1 4.1 4.1 4.1 8.2 3.1 3.1 3.6
4.1 4.1 3.6 3.6 3.3 3.3 3.7 3.7 3.7 3.7
3.1 3.1 3.4 7.3 8.6 5.6
2.6(4.6)
2.1
0(1.2) 0(1.2)
1.3(2.9)
8.6(7) 8.6(7)
6.3 6.3 0.7(1) 3.9(4.9) 3.6 0.3(2) 3.8 3.8 0.5(1.8) 8.6 3.1(2.9) 3.1(2.9) 0(4.1) 0(1.3)
MAIN BOARD
(3/3)
IC302
IC001
G
0.1
C316
50V
2.2
C203
100p C1
13
50V
10
C106
50V
10
C206
100p
C207
50V
10
C212
100p C213
100p
C107
50V
2.2
C103
50V
10
C1
12
50V
10
C319
1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18 19 20
20P
CN403
GND USB_VBUS GND USB_GND KEY_GND USB_D+ AUX_LCH USB_D- KEY1 AUX_RCH RE1 AUX_GND RE0 KEY0 LCD_CE SIRCS LCD_CLK LCD_DA
TA
ILL+B P
ANEL(NOSE SW)
R31
1
47k
100p
C104
100p C204
12k
R104
12k
R204
2.2k
R302
470
R103
470
R203
D201 D101 1000p
C301
MAZ8068GMLS0
D410
10k
R1
17
10k
R217
10k
R107
10k
R207
50V
1
C105
50V
1
C205
50V
2.2
C323
47p C302
R404
0
1 2 3
3P
CN501
USB_D+ USB_D- USB_GND
FB201 FB101
1k
R212
1k
R1
12
10k R213 10k R1 13
C318
1
1
C812
1
C813
R T1N140C-TP-1
Q103
R T1N140C-TP-1
Q203
1.5k R303
0
R829
CAM003
50V
10
C208
50V
10
C108
0
R304
10V
100
C520
10
R309
D301
UDZSUSTE-176.8B
D403
MAZ8068GMLS0
D404
MAZ8068GMLS0
16V
220
C317
C524
0.1
D41
1
0.1
10
R526
10
R527
L TC614TKFP8T146
Q102
L TC614TKFP8T146
Q202
L TC614TKFP8T146
Q104
L TC614TKFP8T146
Q204
220
R106
220
R1
16
220
R206
220
R216
24 23 22 21
20 19 18 17
28 27 26 31 32 34 30 29 25
16 15 14 13 12 11 10
9
33
8 7
35 37
6
36
5
39 40 38
3 4 1 2
20 19 18 23 24 26 22 21 17
16 15 14 13 12
11
10
9
25
8 7
27 29
6
28
5
31 32 30
3 4 1 2
BD3447AFV
-E2
IC302
ELECTRONIC VOLUME
BUS_LCH
BUS_RCH
TU_LCH TU_RCH CD_LCH
CD_RCH
AUX_LCH
AUX_GND AUX_RCH
NCO NCO NCO
ZAPPIN1
NCO NCO
ZAPPIN2
EBIAS DS2_L DS1_L DS3_L
DS3_R
DS1_R DS2_R EBIAS RING_LCH RING_RCH SA_CLK SA_DA SA_OUT R/S_OUT_RCH R/S_OUT_LCH OUT_RRCH OUT_RLCH OUT_FRCH OUT_FLCH VCC SCL SDA GND FIL
J302
4P
4.7k
R1
1
1000p
C1
JW148
0.22
C12
0.01
C19
JW138
15p C6
12p
C18
0.47
C16
0.1 C9
470k
R2
3.3uH
L1
0.01
C22
VR1
IC001
PHASE LOCKED LOOP(PLL)
TEF6617T/V1/S470,518
AMRFIN
AMRFDEC
FMIN2 FMIN1
GNDRF
VCC2
AMRF
AGC
LOUT
ROUT
GNDAUD
AMIF
AGC2
MPXIN
MPXOUT
RSSI
XT
AL2
XT
AL1
GNDD SCL SDA VREF VREGSUP VCC1 GND VCODEC PLL PLLREF TEST AMSELIN1 AMSELIN2 AMIF
AGC1
AMSELOUT1 AMSELOUT2
0.1
C24
22
R12
0
R5
0.01
C20
0.1
C17
JW126
68k
R6
0.1
C27
100
R13
560uH
L8
0.1
C26
1000p
C5
0
R15
0
R4
JW137
33k
R10
0
R3
0.1
C25
JW147
L2
2.2uH
470k
R1
100
R14
16V
47
C28
CAM002
4MHz
X1
1
C21
33p
C8
0
R16
L6
FM MIX
1 2 34
6
560uH
L7
JW102
J1
0.01
C23
2.2
C13
19 20 21
BUS3
22
BUS4 BUS5
23 24 25 26 27 28 29 30 31
BUS2
32 33
ZAPPIN SA_CLK SA_DA
I2C_SCK I2C_SIO
I2C_SCK I2C_SIO
KEY1 KEY0 LCD_CE SIRCS LCD_CLK LCD_DA
TA
RE1 NOSE_SW RE0
SA_IN
(CHASSIS)
(CHASSIS)
Q102-104,202-204
MUTE
-4 -2 -3 -1
L
FRONT
R
REAR/SUB
R L
AUDIO OUT
(ANTENNA)
(2/2)
(MG-101Y)
UNIT
CD MECHANISM
(Page 19) (Page 20)
(Page 20)
(Page 23)