Read Sony CDX-GT490U / CDX-GT490US / CDX-GT494U / CDX-GT49UM Service Manual online
CDX-GT49UM/GT490U/GT490US/GT494U
CDX-GT49UM/GT490U/GT490US/GT494U
23
23
C
8
6
G
7
H
13
11
10
12
E
B
5
1
4
I
2
F
9
J
A
D
3
BOARD
MAIN
A
CN403
(3/3)
5.1
5
5.1
5.1
2.6
2.6
2.6
2.6
2.6
2.6
2.6
5.1
3.4
1.8
2.6
2.6
2.6
2.6
2.6
2.6
5.1
3.4
1.8
2.6
2.6
0.3
3.2
3.1
2.6
0.3
3.2
3.1
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
5.1
5.1
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
2.6
0.3
0.3
*
1
*
1
*
1
*
1
*
1
*
1
*
2
*
3
*
2
*
3
*
2
*
3
*
2
*
3
*
2
*
3
*
1
*
1
*
1
*
1
*
1
*
1
*
2
*
3
*
1
(GT490U/GT490US/GT494U)
(GT49UM)
(GT49UM)
(GT490U/GT490US/GT494U)
(GT490U/GT490US/GT494U)
(GT49UM)
*1
*1
*1
*1
IC901
IC902
JACK BOARD
VCC
OUT
OUT
GND1
GND2
GND2
RS-470
IC902
NESW505CT-AST
LED901
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
17
18
19
20
21
22
29
28
27
26
25
24
23
28
27
26
25
24
23
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
LC75829PWH-US-H
IC901
LCD DRIVER,LED CONTROL
BACK-LIGHT
DIMMER
COLOR
BLINK
SEG48
SEG47
SEG46
SEG45
SEG44
SEG43
SEG42
SEG41
SEG40
SEG39
SEG38
SEG37
SEG36
SEG35
SEG34
SEG33
SEG32
SEG31
SEG30
SEG29
SEG28
SEG27
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG1
1
SEG10
SEG9
SEG8
SEG7
SEG6
SEG5
SEG4
SEG3
COM4
COM3
COM2
COM1
SEG2
VDD
VDD1
VDD2
VSS
SEG52
INH
LCD_CE
LCD_CLK
LCD_DATA
SEG3
COM4
COM3
COM2
COM1
SEG2
VDD
VDD1
VDD2
VSS
SEG52
INH
LCD_CE
LCD_CLK
LCD_DATA
MA2J1
110GLS0
D901
D902
MAZ8051GMLS0
C901
0.1
C902
0.1
1M
R904
C904
0.47
C906
0.1
R906
150
R907
150
R905
100
MAZ8180GMLS0
D906
RE901
R920
820
R921
1k
R922
1k
R923
1.2k
R924
1.5k
R925
1.8k
2.2k
R926
R928
820
R929
1k
R930
1k
R931
1.2k
R932
1.5k
R933
1.8k
R934
2.2k
R908
220
R909
220
R910
220
R911
1.2k
R963
150
R966
150
R967
150
R970
150
R971
150
0.1
C903
0
R914
LED903
R990
180
R991
180
R989
150
MAZ8068GMLS0
D907
MAZ8068GMLS0
D908
MAZ8068GMLS0
D909
MAZ8068GMLS0
D910
MAZ8068GMLS0
D912
3
1
2
4
L901
MAZ8068GMLS0
D91
1
0
R918
0
R919
100
R915
100
R916
100
R917
VDR900
VDR901
LCD901 LIQUID CRYSTAL DISPLAY PANEL
1
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
52
2
4
49
51
3
50
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
11
12
13
14
15
16
17
18
19
20
20P
CN901
GND
USB_VBUS
GND
USB_GND
KEY_GND
KEY_GND
USB_D+
AUX_LCH
USB_D-
KEY1
AUX_RCH
RE1
AUX_GND
RE0
KEY0
LCD_CE
SIRCS
LCD_CLK
LCD_DATA
ILL_+B
PANEL(NOSE_SW)
R935
3.3k
R962
150
C910
100p
C911
100p
C909
100p
C912
0.1
R942
R943
R949
R948
LED912
LED910
LED914
R952
R953
LED916
LED919
LED921
R959
R958
R984
220
R985
220
R983
270
LED905
LSW91
1
LSW907
LSW910
LSW913
LSW912
LSW906
LSW909
LSW908
S907
S902
S901
S903
S904
S906
S905
LED925
LED928
R977
270
R976
270
R974
270
LED929
LED924
R975
270
R998
0
R945
10
R946
10
CN902
6P
RT1N140C-TP-1
Q901
RT1N140C-TP-1
Q907
LED DRIVER
LED934
R900
LED932
R899
LED909
LED907
0
R999
LSW905
3
1
2
4
5
6
3
1
2
4
5
6
3
1
2
4
5
6
3
1
2
4
5
6
3
1
2
4
5
6
3
1
2
4
5
6
3
1
2
4
5
6
3
1
2
4
5
6
3
1
2
4
5
6
J901
FB901
FB903
FB902
DATA
CLK
CE
CE
CLK
DATA
CLK
DATA
S[1]
S[2]
COM[1]
COM[2]
COM[3]
COM[4]
S[3]
S[4]
S[5]
S[6]
S[7]
S[8]
S[9]
S[10]
S[1
1]
S[12]
S[13]
S[14]
S[15]
S[16]
S[17]
S[18]
S[19]
S[20]
S[21]
S[22]
S[23]
S[24]
S[25]
S[26]
S[27]
S[28]
S[29]
S[30]
S[31]
S[32]
S[33]
S[34]
S[35]
S[36]
S[22]
S[23]
S[24]
S[25]
S[26]
S[27]
S[28]
S[29]
S[30]
S[31]
S[32]
S[33]
S[34]
S[35]
S[36]
COM[1]
COM[2]
COM[3]
COM[4]
S[48]
S[47]
S[46]
S[45]
S[44]
S[43]
S[42]
S[41]
S[40]
S[39]
S[38]
S[37]
S[36]
S[35]
S[34]
S[33]
S[32]
S[31]
S[30]
S[29]
S[28]
S[27]
S[26]
S[25]
S[24]
S[23]
S[22]
S[21]
S[20]
S[19]
S[18]
S[17]
S[16]
S[15]
S[14]
S[13]
S[12]
S[1
1]
S[10]
S[9]
S[8]
S[7]
S[6]
S[5]
S[4]
S[3]
S[2]
S[1]
S[48]
S[47]
S[46]
S[45]
S[44]
S[43]
S[42]
S[41]
S[40]
S[39]
S[38]
S[37]
AUX_LCH
AUX_RCH
AUX_GND
AUX_GND
AUX_RCH
AUX_LCH
W006
AUX
W002
W003
W005
W001
W004
6
5
1
2
3
4
2
3
4
VBUS-USB
D–
D+
D+
GND-USB
(USB)
CN902
(DISC SLOT
INDICA
TOR)
(ILLUMINA
TOR)
(ILLUMINA
TOR)
(ILLUMINA
TOR)
(ILLUMINA
TOR)
SEEK–/
/SEEK+
ZAP
SOURCE/OFF
ROTARY
ENCODER
PUSH ENTER/
SELECT
(VOLUME)
SOURCE/OFF
/SEEK+
SEEK–/
ZAP
6/P
AUSE
DSPL/SCRL
5/DM+
4/SHUF
3/REP
2/ALBM +
1/ALBM –
PTY
MODE
SIGNAL RECEIVER
REMOTE CONTROL
3
1
2
4
4
(LCD BACK LIGHT)
LCD BACK LIGHT
DIMMER CONTROL
LED924,925,928,929
(RING ILLUMINATOR)
LED903,905,907,909,910,
912,914,916,919,921,924,
925,928,929,932,934
SML-310VTT86TJ
SML-310DTT86
R899,942,948,952,958
220
270
R900,943,949,953,959
100
180
KEY BOARD
4-8. SCHEMATIC DIAGRAM – KEY Section –
(Page 21)
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