Schematic Diagram -Key Section - Sony CDX-GT50UMS Service Manual

4-8. SCHEMATIC DIAGRAM – KEY Section –
1 2
KEY BOARD
A
FB902
FB901
J901
AUX
R905
0
FB903
B
CN901
20P
USB_GND 1
USB_VBUS 2
3
D-
D+ 4
GND 5
KEY_GND 6
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 21)
KEY_0 13
R995 1k
SIRCS 14
LCD_DATA 15
LCD_CE 16
LCD_CLK 17
D
ILL(FP+B) 18
19
PANEL_SW
GND 20
E
5
CN902
4P
GND-USB
D+
7
D–
VBUS-USB
(USB)
6
F
* 1 LED903,905,907,909,910,912,
LED914,916,919,921,925,928,
LED929,932,934,936,938,940
SML-D12V8WT86SN
(EXCEPT GT50UMS/GT457UE)
SML-D12Y8WT86SP
(GT50UMS)
SML-D12P8WT86SJ
G
(GT457UE)
* 2 R937,942,978
220
(GT457UE)
680
(GT50UMS)
820
(EXCEPT GT50UMS/GT457UE)
* 3 R948,975,976,994
220
(GT457UE)
820
(EXCEPT GT457UE)
H
* 4 R952
330
(GT457UE)
1k
(EXCEPT GT457UE)
* 5 R953,958,959
330
(GT457UE)
1k
(GT50UMS)
1.2k
(EXCEPT GT50UMS/GT457UE)
I
* 6 R962,963,966,967
100
(GT457UE)
150
(EXCEPT GT457UE)
* 7 R970
150
(GT457UE)
220
(EXCEPT GT457UE)
J
CDX-GT50UMS/GT450U/GT457UE/GT500U/GT500US/GT505U
3 4 5 6
C915
R939 R900
1000p
1.2k 0
C916
1000p
C912
R907 R937
0.1
0 * 2
R935 R948
3
1.2k *
DATA
CE
CLK
AR MODEL
R979
1.2k
R987
1.5k
R941 R942 R949 R978 R989
1.2k * 2 1.2k * 2 1.5k
AR MODEL
R943 R976 R951 R994
1.2k * 3 1.2k * 3
AR MODEL AR MODEL
VDR906
AR MODEL
VDR908
R999
10
R980 R983 R952 R954
1.8k * 10 * 4 1.5k
R981 R984 R953 R955
10 5
1.8k * * 1.8k
RE901
ROTARY ENCODER
R982 R985
PUSH ENTER/ 2.2k * 11
SELECT
AR MODEL
(VOLUME)
R944
10
7 8 9
R986 100
5 3 1
Z
LSW905
DSPL/SCRL
6 4 2
R920
S901
820 AR MODEL
R960 R962
6
150 *
R928
820
R961 R963
* 6
150
SOURCE/OFF
5 3 1
R921
LSW906
S902
1k
6/PAUSE
6 4 2
SEEK+ R929
1k
M
>
5 3 1
R922
LSW907
S903
1k
5
R974
6 4 2
* 9
R975
R930
* 3
1k
/MODE
R923
5 3 1
S904
1.2k
LSW908
4/SHUF
6 4 2
SEEK–
.
m R931
1.2k
R996
12
*
R924
S905 5 3 1
1.5k
LSW909
3/REP
6 4 2
AR MODEL
R990
R965 R966 R932
* 12
* 6 1.5k
150
R925
S906
1.8k
5 3 1
R991 LSW910
* 13
2/ALBUM +
ZAP
6 4 2
R926
AR MODEL
S907
2.2k
R964 R967
150 * 6
R933
1.8k
5 3 1
LSW911
1/ALBUM –
6 4 2
AR MODEL
R934
R968 R970
220 * 7 2.2k
5 3 1
LSW912
AF/TA/PTY
R956 R958
(AEP,UK,RU)
5
1.5k *
PTY
6 4 2
(E,AR,EA,MX,IND)
R957 R959
AR MODEL
1.8k * 5
R969 R971
* 8
220
D921
RKZ6.8B2KGP1
23 23
CDX-GT50UMS/GT450U/GT457UE/GT500U/GT500US/GT505U
10 11 12
R940 R906
150 150
5.2 1
VCC
4.7 3
OUT
2
GND
IC902
IC902
PNA4813M01S0
REMOTE CONTROL
SIGNAL RECEIVER
48
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
R972 R909 C906 COM[2]
2.6
COM2
RKZ5.1B2KGP1 53
1.2k 120 0.1
COM[1] 2.6
COM1
54
S[2] 2.6
SEG2
55
C903 0.1 5.2
R973 R910 VDD
56
1.2k 120
C902 0.1 3.5
VDD1
57
AR MODEL
C901 0.1 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
DATA R917 100 3
LCD_DATA
64
C911 100p
C910 100p
C909 100p
1
Q901
RT1N140C-TP-1
0.1
LCD BACK LIGHT
DIMMER CONTROL
5.2
R911
1.5k
R998
0
EXCEPT
AR MODEL
AR MODEL
0
R914
0 Q904
Q903 RT6N140C-TP-1
RT6N140C-TP-1 LED DRIVER
8.9
LED DRIVER
5.2
0
52 51 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
* 8 R971 * 11 R985
180 820
(GT457UE) (GT457UE)
220 1.2k
(EXCEPT GT457UE) (GT50UMS)
2.2k
* 9 R974
(EXCEPT GT50UMS/GT457UE)
180
(GT457UE) * 12 R990,996
270
680
(GT50UMS) (GT457UE)
680
820
(EXCEPT GT50UMS/GT457UE) (GT50UMS)
1k
* 10 R983,984
(EXCEPT GT50UMS/GT457UE)
820
(GT457UE) * 13 R991
1.2k 270
(GT50UMS) (GT457UE)
1.2k
1.8k
(EXCEPT GT50UMS/GT457UE)
(EXCEPT GT50UMS/GT457UE)
1.5k
(GT50UMS)
Ver. 1.1
13 14
47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
S[21]
2.6
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 SEG28 25
LC75829PWH-US-H 2.6 S[29]
SEG29 24
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]
20
SEG33
2.6 S[34]
19
SEG34
2.6 S[35]
1 18
SEG35
2.6 S[36]
SEG36 17
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
LCD901
LIQUID CRYSTAL DISPLAY PANEL