Schematic Diagram -Key Section - Sony CDX-GT48UM Service Manual

4-8. SCHEMATIC DIAGRAM – KEY Section –
1 2 3
KEY BOARD
A
B
CN901
20P
GND
1
USB_VBUS 2
GND 3
USB_GND 4
KEY_GND
5
USB_D+
6
AUX_LCH
7
USB_D-
C 8
MAIN
KEY1
BOARD A 9
(2/3) AUX_RCH
10
CN403
RE1
11
(Page 20)
AUX_GND
12
RE0 13
KEY0 14
LCD_CE
15
SIRCS
16
LCD_CLK
17
LCD_DATA
D 18
ILL_+B
19
PANEL(NOSE_SW)
20
E VDR901
VDR900
4 2
RB901
10X2
3 1
F
3
CN902
1
6P
5
CN902
VBUS-USB
D–
D+
GND-USB
(USB)
G
6
H
I
J
CDX-GT48UM/GT480U/GT480US/GT484US
4 5 6
*1 LED907,911,913-915,918,922,924,925,928,930,931
SML-310DTT86
SML-310VTT86
R935
180
LSW901
R936
150
LED907
SIGN851
SIGN852
SIGN849
LED911
CE
*1
SOURCE
CLK
LED913
DATA *1
SOURCE
R939
220
R940
180
L901
4
2
LED922 R951 R947
*1
220 220
DISC SLOT
INDICATOR
LED918 LED925
*1 *1
R982 MODE
150
LED924 LED930
*1 *1
R980
150
MODE
R981
R952 R948
150
180 180
7 8 9 10
(GT48UM)
(GT480U/GT480US/GT484US)
LSW905
R920
DSPL/SCRL
820
R928
R955
820
100
0.2
R921 R911
LSW906
S907 R929 1.2k
1k
6/PAUSE
*1 1k
OFF
OFF
R959
100
Q902
2SC3052EF-T1-LEF
LCD BACK LIGHT
R943
LSW907 CONTROL
100
5/DM+
S906
R922
1k
SOURCE
R930
1k
LSW908
S905
4/SHUF
R923 R931
1.2k 1.2k
R963
100
LED915
*1
S908 R924 LSW909
1.5k
3/REP
R932
1.5k
S902
R925 LSW910
R933
R944 1.8k
2/ALBM + 1.8k
100
R964
100
S903
R926
2.2k
R975
180
S904
R927 LSW911
MODE R934
3.3k
1/ALBM –
2.2k
R967
100
GT48UM
R986
0
LSW912 0.2
BTM
R987
RE901
R968
0
ROTARY
100
ENCODER R991
3.3k
PUSH ENTER/
SELECT
(VOLUME)
LSW913
ZAP
23 23
CDX-GT48UM/GT480U/GT480US/GT484US
11 12 13
R907
LED901
150
NESW505CT-AST
(LCD BACK LIGHT)
R906 R905
150 100 IC902
R908
330 IC902
RS-470
R909 REMOTE CONTROL
SIGNAL RECEIVER
330
48
5.4 4 1
VCC GND1
5.2 3 2
R910
OUT GND2
330
S[4] 2.7
C906 49 SEG4
S[3] 2.7
0.1
50 SEG3
COM[4] 2.7
51 COM4
COM[3]
2.7
52 COM3
COM[2]
Q901 2.7
53 COM2
2SC3052EF-T1-LEF
COM[1] 2.7
LCD BACK LIGHT 54 COM1
DIMMER CONTROL D901 R903 S[2] 2.7
55 SEG2
1k
0.8 1SS355WTE-17
5.4
56 VDD
R993 C902 0.1 3.7
57 VDD1
10k
0.1 R902 1k 1.8
R904 58 VDD2
C901 0.1
1M
59 VSS
R901 S[1] 2.7
60 SEG52
1k
2.6
61 INH
CE R988 100
C904 C903 0.2
0.1 62 LCD_CE
0.47 0.1
CLK R989 100
3.2
0.8
63 LCD_CLK
DATA R990 100 3.2 LCD_
64
R992
DATA
10k
R998
0
D902
MAZ8051GMLS0
1
52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
LED928
*1
(RING ILLUMINATOR)
R971
100 (GT480U/GT480US/GT484US)
180 (GT48UM)
LED928 SIGN852 W005
*1
R972
100 (GT480U/GT480US/GT484US)
150 (GT48UM) SIGN849 W006
SIGN851 W004
LED932
LED935
GT480U/
R996 GT480US/
0.8 GT484US
10k
Q907
2SC3052EF-T1-LEF
LED DRIVER
LED926,927,929
(RING ILLUMINATOR)
(GT48UM)
R914
0
14 15 16 17
47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
2.7 S[21]
SEG21 32
2.7 S[22]
SEG22 31
2.7 S[23]
SEG23 30
S[24]
2.7
SEG24 29
S[25]
2.7
SEG25 28
2.7 S[26]
SEG26 27
IC901
2.7 S[27]
SEG27 26
2.7 S[28]
IC901 SEG28
25
2.7 S[29]
LC75826WH-US-E
SEG29
24
2.7 S[30]
LCD DRIVER,
SEG30
23
LED CONTROL
2.7 S[31]
SEG31 22
2.7 S[32]
SEG32 21
2.7 S[33]
SEG33 20
S[34]
2.7
SEG34 19
S[35]
2.7
SEG35 18
2.7 S[36]
SEG36 17
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
32 31 30 29 28 27 26 25 24 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
JACK BOARD
W003
W002
FB901
W001
FB902
J901
AUX
FB903