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CDX-GT49UM/GT490U/GT490US/GT494U
CDX-GT49UM/GT490U/GT490US/GT494U
19
19
4-4. SCHEMATIC DIAGRAM – MAIN Section (1/3) –
• See page 24 for IC Block Diagrams.
(Page 20)
(Page 21)
Ver. 1.1
C
8
15
6
G
7
H
13
11
10
12
E
B
5
1
4
I
2
F
9
J
A
14
D
3
BOARD
(3/3)
MAIN
2
1
MAIN BOARD
(2/3)
IC B/D
IC B/D
GT490US:AR MODEL
14.4
6.4
0
0
2.7
6.4
0.6
0
3.1
7.1
3.1
7.1
14.4
7.1
7.1
8.2
7.6
7.6
7.6
7.6
8
7.1
7.1
14.4
7.1
3.3
7.1
3.3
13.7
13.7
8.6
0<3.3>
6.2
10.6
14.4
14
5.1
3.3
0
3.3
13.9
0
13.6
0
3.3
3.3
3.3
3.3
5.1
1.3
4.8
GT490U/GT490US:E,EA,MX MODEL/GT494U
IC301
IC403
IC402
MAIN BOARD (1/3)
MAZ8180GMLS0
D807
1k
R816
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
CN802
16P
FL+
RL+
RR+
FR+
AMP-REM
ANT-REM
ACC
GND
FL-
RL-
RR-
FR-
TEL-ATT
ILL
TEST
+B
+B
+B
+B
C311
0.01
L801
0.22
C811
1
C1
15
1
C215
0.22
C305
1
C210
0.22
C405
0.22
C810
1
C1
14
1
C214
0.22
C304
0.01
C308
1
C109
1
C1
10
1
C209
100k
R401
0.01
C407
2.2uH
L301
4.7k
R823
RT1P141C-TP-1
Q304
RT1N141C-TP-1
Q303
S401
47k
R306
47p
C314
150
R308
10V
C409
1000
RT1P141C-TP-1
Q305
CD MUTE
16V
47
C322
25V
22
C303
C116
100p
C111
100p
C216
100p
C211
100p
2.2
C315
R830
0
16V
47
C433
1
C306
16V
47
C307
0
R825
10V
330
C41
1
16V
10
C312
16V
10
C313
16V
10
C309
6.3V
330
C403
MA2J1110GLS0
D308
MA2J1110GLS0
D309
MA2J1110GLS0
D306
5
4
3
2
1
TK11133CSCL-G
IC402
+3.3V REG
CONT
GND
NOISE
VOUT
VIN
10k
R832
C815
1000p
0.22
C404
0.1
C402
4
3
2
1
1
PST8228UL
IC403
RESET
0.01
C401
J801
0.01
C406
22
R313
1A4-A2
D104
1A4-A2
D105
1A4-A2
D204
1A4-A2
D205
1A4-A2
D302
1A4-A2
D303
1A4-A2
D304
1A4-A2
D305
2SC3052EF-T1-LEF
Q808
RT1N141C-TP-1
Q802
RT1N141C-TP-1
Q807
R826
0
R827
220k
R801
0
D806
MAZ8075GMLS0
R815
1k
R802
0
IC301
TDA8588AJ/N2/R1
1
TA
B
2
SDA
3
OUT
-FL-
4
SCL
5
OUT
-FL+
6
VP2
7
OUT
-RL-
8
P-GND1
9
OUT
-RL+
10
SVR
11
IN-RL
12
IN-FL
13
S-GND
14
IN-FR
15
IN-RR
16
BEEP
17
OUT
-RR+
18
P-GND3
19
OUT
-RR-
20
VP1
21
OUT
-FR+
22
STB
23
OUT
-FR-
24
P-GND4
25
DIAG
26
RST
27
ANT
-REM
28
CRES
29
AMP-REM
30
AUDIO+B
31
SER
VO+3.3V
32
GND
33
MECHA+6V
34
PA
N
EL
+B
35
VP
36
CBU
37
BU+B
0.22
C808
1000p
C806
47k
R819
MAZ8180GMLS0
D809
MAZ8180GMLS0
D81
1
1N5404-C31
1-3
D812
0.47
C803
47k
R817
2SC3052EF-T1-LEF
Q805
ACC DETECT
4.7k
R818
1000p
C805
16V
3300
C807
C804
0.47
MAZ8180GMLS0
D810
1
2
3
4
5
7
8
9
10
11
12
13
14
15
16
17
18
6
BUS1
25
26
27
28
29
30
31
26
27
28
29
30
31
32
33
BUS2
220
JC1
12
220
JC
111
I2C_SIO
I2C_SCK
AT
T
ACC
RC1
RC0
9
4
6
ANT REM
REAR
12
RR-
FR-
4
ACC
REAR
RL+
15
10
L-CH
13
RL+
4
3
FR–
12
ACC
RR+
16
R-CH
9
14
+
6
15
BATT
AMP REM
ANT REM
13
4
RL–
1
FRONT
10
–
ACC
GND
RR–
GND
7
8
11
+
BATT
8
AMP REM
1
5
7
GND
6
8
+
6
ANT REM
1
BATT
FR+
2
8
FR+
L-CH
FRONT
RL-
FL–
3
2
FL+
2
–
3
2
11
R-CH
5
7
5
5
14
+
–
–
RR+
16
FL+
–
FL-
7
1
3
FU601
10A
Q802,807,808
BACK-UP CHECK
(REMOTE IN)
I2C BUS CONTROLLED
POWER AMP/MULTIPLE
VOLTAGE REGULATOR
Q303,304
MUTE DRIVE
NC
VSS
VSS
VIN
VOUT
RESET
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