Schematic Diagram -Key Section - Sony CDX-GT454US Service Manual

CDX-GT450U/GT454US
4-8. SCHEMATIC DIAGRAM – KEY Section –
1 2 3
KEY BOARD
A
FB902
FB901
J901
AUX
R905
0
FB903
B
CN901
C915
20P
1000p
USB_GND 1
USB_VBUS 2
C916
D- 3
1000p
D+ 4
GND 5
KEY_GND 6
C912
AUX_L 7
C
AUX_R 8
AUX_GND 9
MAIN
BOARD A RE_0 10
(3/3)
RE_1 11
CN102
KEY_1 12
(Page 20)
KEY_0 13
R995 1k
SIRCS 14
LCD_DATA 15
LCD_CE 16
LCD_CLK 17
D
ILL(FP+B) 18
PANEL_SW 19
GND 20
E
5
CN902
4P
GND-USB
D+
7
D–
VBUS-USB
(USB) 6
F
VDR906
G
VDR908
H
RE901
ROTARY ENCODER
PUSH ENTER/
SELECT
I
(VOLUME)
J
CDX-GT450U/GT454US
4 5 6
R900
0
R937
0.1
820
R948
820
DATA
CE
CLK
R996
1k
R990
1k
R942 R978 R991
820 820 1.2k
R976 R994
820 820
R999
10
R983 R952
1.8k 1k
R984 R953 R958
1.8k 1.2k 1.2k
R985 R959
2.2k 1.2k
R944
10
7 8 9
R986 100
5 3 1
LSW905
DSPL/SCRL
6 4 2
S901 R920
820
R962
150
R928
820
R963
150
SOURCE/OFF
5 3 1
S902 R921 LSW906
1k
6/PAUSE
6 4 2
SEEK+
R929
1k
5 3 1
S903 R922 LSW907
1k
5
R974
6 4 2
820
R975
820
R930
1k
/MODE
S904 R923
5 3 1
1.2k
LSW908
4/SHUF
6 4 2
SEEK–
R931
1.2k
S905 R924
5 3 1
1.5k
LSW909
3/REP
6 4 2
R966 R932
150 1.5k
S906 R925
1.8k
5 3 1
LSW910
2/ALBUM +
ZAP
6 4 2
S907 R926
2.2k
R967
150
R933
1.8k
5 3 1
LSW911
1/ALBUM –
6 4 2
52 51
R970 R934
220 2.2k
5 3 1
LSW912
PTY
(GT450U)
6 4 2
AF/TA/PTY
(GT454US)
R971
220
D921
RKZ6.8B2KGP1
22 22
10 11 12
R940 R906
150 150
1
5.2
VCC
3
4.7
OUT
2
GND
IC902
IC902
PNA4813M01S0
REMOTE CONTROL
SIGNAL RECEIVER
48 47 46 45 44
R908
120
S[4] 2.6
SEG4
49
S[3]
2.6
SEG3
50
COM[4]
2.6
COM4
51
COM[3] 2.6
COM3
52
D902
R909 C906 COM[2] 2.6
COM2
RKZ5.1B2KGP1
53
120 0.1
COM[1] 2.6
COM1
54
S[2] 2.6
SEG2
55
C903 0.1
5.2
R910 VDD
56
120 C902 0.1
3.5
VDD1
57
C901 0.1 LCD DRIVER,LED CONTROL
1.8
VDD2
58
VSS
59
C904 0.47 S[1] 2.6
SEG52
60
2.6
INH
61
CE R915 100 0
LCD_CE
62
CLK R916 100 3.2
LCD_CLK
63 1
R917 100
DATA 3
LCD_DATA
64
C911 100p
C910 100p
C909 100p
1 2 3 4 5
Q901
RT1N140C-TP-1
0.1 LCD BACK LIGHT
DIMMER CONTROL
5.2
R911
1.5k
R998
0
R914
0
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 20
13 14 15
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
2.6 S[24]
SEG24
29
2.6 S[25]
SEG25
28
2.6 S[26]
SEG26
27
IC901 2.6 S[27]
SEG27
26
2.6 S[28]
SEG28
25
IC901
S[29]
2.6
SEG29
LC75829PWH-US-H 24
S[30]
2.6
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
2.6 S[35]
SEG35
18
2.6 S[36]
SEG36
17
6 7 8 9 10 11 12 13 14 15 16
19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
LCD901
LIQUID CRYSTAL DISPLAY PANEL