Schematic Diagram -Key Section - Sony CDX-GT440U Service Manual

CDX-GT440U/GT444U/GT447UE
4-8. SCHEMATIC DIAGRAM – KEY Section –
1 2
KEY BOARD
A
CN901
20P
GND 1
USB_VBUS 2
GND 3
USB_GND 4
KEY_GND 5
B
USB_D+ 6
AUX_LCH 7
USB_D- 8
9
KEY1
MAIN
BOARD A AUX_RCH 10
(3/3)
RE1 11
CN403
AUX_GND 12
(Page 20)
RE0 13
KEY0 14
LCD_CE 15
C
SIRCS 16
LCD_CLK 17
LCD_DATA 18
ILL_+B 19
PANEL(NOSE_SW) 20
D
E
CN902
6P
5
CN902
VBUS-USB 1
D–
2
D+
3
GND-USB 4
(USB)
6
F
JACK BOARD
FB902
G
FB901
J901
AUX
FB903
H
I
J
CDX-GT440U/GT444U/GT447UE
3 4 5
C912
0.1
AUX_LCH
AUX_RCH
AUX_GND
D910
CE
MAZ8068GMLS0
CLK
D906
DATA
MAZ8180GMLS0
R983
* 2
R984
* 6
R985
* 6
VDR901
VDR900
R945 R946
L901
10 10
3 4
1 2
R942
* 2
R943
* 3
R948
* 2
W003 W005 AUX_RCH
R949
* 3
W001 W004 AUX_LCH
W002 W006 AUX_GND
6 7 8
* 1 LED903,905,907,909,910,
912,914,916,919,921,924,
925,928,929,932,934
SML-310PTT86TK
(GT444U/GT447UE)
SML-310VTT86TJ
5 3 1
(GT440U)
* 2 R899,942,948,952,958,974,976,983
150
(GT444U/GT447UE)
6 4 2
270
(GT440U)
R962 R928
* 3 R900,943,949,953,959
* 4 820
100
(GT440U)
180
5 3 1
(GT444U/GT447UE)
R920
S901
* 4 R962,963,966,967,970,971
820
100
(GT444U/GT447UE) 6 4 2
R929
150
1k
(GT440U)
5 3 1
D902
R921
S902
MAZ8051GMLS0
1k
SOURCE/OFF
6 4 2
* 5 R975,977
180
R989 R963 R930
(GT444U/GT447UE)
150 1k
* 4
270
R922
S903
(GT440U)
1k
R990
* 7 * 6 R984,985
180 /SEEK+
R991
(GT444U/GT447UE)
* 7
220
5 3 1
(GT440U)
R923
S904
* 7 R990,991
1.2k
150
R899
(GT444U/GT447UE)
* 2 6 4 2
180
R931
(GT440U)
R900 1.2k
3
*
R924
S905
1.5k
SEEK–/
5 3 1
6 4 2
R925
S906
1.8k
R966 R932
* 4 1.5k
5 3 1
R926
S907
2.2k
ZAP
6 4 2
R967 R933
* 4 1.8k
5 3 1
R952 R958
* 2 * 2
R953 R959
6 4 2
* 3 * 2
R970 R934
* 4 2.2k
5 3 1
6 4 2
R918
0
R971 R935
* 4 3.3k
R919 RE901
0 ROTARY
5 3 1
ENCODER
PUSH ENTER/
R999
SELECT
0
(VOLUME)
6 4 2
52 51
22 22
9 10 11
R907 48
150
IC902
R906 R905
150 100 S[4] 2.6
IC902
49 SEG4
RS-470
S[3]
2.6
REMOTE CONTROL 50 SEG3
COM[4]
2.6
SIGNAL RECEIVER
51 COM4
COM[3]
5.1 1 2 2.6
VCC GND1 52 COM3
COM[2]
5 3 4 2.6
OUT GND2 53 COM2
COM[1] 2.6
54 COM1
S[2] 2.6
55 SEG2
5.1
56
VDD
C902 0.1 3.4
57
C903 VDD1
R904
1.8
1M 0.1
58 VDD2
C901 0.1
59 VSS
S[1] 2.6
60 SEG52
2.6
61 INH
CE R915 100 0.3
62 LCD_CE
CLK R916 100 3.2
63 LCD_CLK
C906 C904
DATA R917 100 3.1
0.1 0.47
64 LCD_DATA
C911 C909
100p 100p
C910
100p
LED901
NESW505CT-AST
(LCD BACK LIGHT)
R908
220
R909
220
R910
220
Q901
RT1N140C-TP-1
0.3 LCD BACK LIGHT
DIMMER CONTROL
5.1
R911
1.2k
R998
0
R914
0
R974
* 2
LED924,925,928,929
(RING ILLUMINATOR)
R975
* 5
R976
* 2
R977
* 5
0.3
5.1
Q907
RT1N140C-TP-1
LED DRIVER
50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21
LCD901 LIQUID CRYSTAL DISPLAY PANEL
12 13
47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
2.6 S[21]
SEG21 32
S[22]
2.6
SEG22 31
S[23]
2.6
SEG23 30
S[24]
2.6
SEG24 29
S[25]
2.6
SEG25 28
2.6 S[26]
SEG26 27
IC901 2.6 S[27]
SEG27 26
2.6 S[28]
IC901 25
SEG28
LC75829PWH-US-H 2.6 S[29]
24
SEG29
LCD DRIVER,LED CONTROL
2.6 S[30]
SEG30 23
2.6 S[31]
SEG31 22
2.6 S[32]
SEG32 21
2.6 S[33]
SEG33 20
2.6 S[34]
SEG34 19
BACK-LIGHT 2.6 S[35]
SEG35 18
2.6 S[36]
SEG36 17
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1