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CDX-GT270MP/GT274MP/GT277ME/GT320MP
CDX-GT270MP/GT274MP/GT277ME/GT320MP
22
22
4-2. SCHEMATIC DIAGRAM - MAIN Section (1/2) -
• See page 26 for IC Block Diagrams.
BOARD
1
MAIN
(2/2)
IC B/D
IC B/D
IC B/D
4.2
0
4.2
0
4.2
4.2
4.2
4.2
4.2
4.2
8.4
3.3
3.3
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.2
4.2
8.4
2.3
2.5
3.3
4.2
4.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
13.8
13.8
13.8
0
3.3
5
6.9
6.9
0
0
3.3
0
5
0.6
0
3.3
4.9
4.9
4.9
14.4
3.3
4.9
3.7
3.7
3.7
3.7
3.7
3.7
4.9
4.9
4.9
14.4
4.9
3.3
3.3
5
14.3
14.4
10.3
6
0 <3.3>
8.4
40
39
38
37
36
35
34
7
6
5
4
3
2
1
33
32
30
31
8
27
28
29
9
10
11
12
13
14
24
17
25
26
23
22
21
20
19
18
15
16
BD3447AFV-E2
IC401
NCO
NCO
TU_RCH
TU_LCH
CD_RCH
CD_LCH
XM_RCH
XM_GND
XM_LCH
AUX_RCH
AUX_GND
AUX_LCH
FP1
FN1
FN2
FP2
EBIAS
DS2_L
DS1_L
DS3_L
DS3_R
DS1_R
DS2_R
EBIAS
NCO
NCO
SA_CLK
SA_DA
SA_OUT
OUT_SLCH
OUT_SRCH
OUT_RLCH
OUT_RRCH
OUT_FLCH
OUT_FRCH
VCC(8.5V)
I2C_SCK
I2C_SIO
GND
FIL
10V
220
C439
50V
10
C415
R409
1k
10k
R407
50V
10
C406
1k
R413
R414
0
50V
10
C414
R415
0
50V
10
C417
R406
1k
10k
R408
1k
R410
50V
10
C416
10k
R411
10k
R412
2.2k
R420
12k
R418
12k
R419
0.22
C317
1A4C-A2
D305
25V
22
C303
16V
C312
10
47k
R322
47k
R324
4.7k
R323
0.22
C308
150
R305
1
C306
22
R422
0
FB403
R812
220k
R813
220k
J801
1k
R802
1
C426
1
C427
47k
R584
220
R303
220
R304
R301
100
100
R302
1A4C-A2
D311
1A4C-A2
D312
16V
C330
47
JW001
JW002
1k
R416
1k
R417
0
R425
1000p
C429
1000p
C430
R801
1k
25V
47
C444
J001
47p
C331
0
R2
0
R3
4.7uH
L1
16V
C2
47
1
C445
1
C446
D401
DA2J10100L
R576
0
0
R421
0.47
C321
0.47
C323
0.47
C325
0.47
C327
CL062
CL063
0.1
C434
0.1
C407
1
C402
CL065
FB804
0
R821
FB802
FB803
2.2
C315
0
FB401
0
FB402
FB801
C803
1000p
C804
1000p
RKZ7.5B2KGP1
D801
RKZ18B2KGP1
D802
L402
1000p
C335
C314
1
1
C333
IC301
TDF8556AJ/N5
1
TA
B
2
I2C_SIO
3
OUT
-FL–
4
I2C_SCK
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(8.5V)
31
SER
VO-3.3V
32
GND
33
MECHA-6V
34
P
ANEL+B
35
VP
36
CBU
37
BU+B
1
C305
C319
1
1
C339
140uH
L302
1
C318
50V
10
C320
16V
47
C307
C338
0.1
JL051
JL052
JL053
CL067
CL068
CL069
JL054
10k
R306
10k
R307
16V
47
C313
47k
R403
47k
R404
25V
470
C409
1
C450
CL061
CL060
RF_ANT_IN
RF_GND
AUDIO_OUT_L
AUDIO_OUT_R
RSTN
SCL
SDA
+8.5V
POWER_GND
TU1
9
4
5
3
1
2
6
7
8
MM1836A33NRE
IC402
1
CONT
2
GND
3
NP
4
VOUT
5
VIN
16V
220
C316
J401
LTA014EUBFS8TL
Q408
LTC014EUBFS8TL
Q801
LTC014EUBFS8TL
Q407
LTC044EUBFS8TL
Q802
LSCR523UBFS8TL
Q803
LSCR523UBFS8TL
Q301
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
16P
CN703
RR+
RL+
RR–
RL–
FR+
FL+
FR–
FL–
AMP_REM
NC
ILL
NC
ACC
TELL_ATT
VCC
GND
2.2
C412
2.2
C413
0.1
C401
LTC014TUBFS8TL
Q405
LTC014TUBFS8TL
Q403
LTC014TUBFS8TL
Q404
LTC014TUBFS8TL
Q406
16V
3300
C337
1k
R1
LTC014TUBFS8TL
Q402
LTC014TUBFS8TL
Q401
1k
R402
1k
R405
STB
DIAG
I2C_SDA
I2C_SCL
I2C_SDA
BEEP
SADATA
SACLK
CD_LCH
CD_RCH
RESET
ACC
BU_IN
RCIN1
ATT
I2C_SCL
RCIN0
IC301
POWER AMP, REGULATOR
IC402
+3.3V REGULATOR
AUDIO OUT
REAR/SUB
IC401
ELECTRICAL VOLUME, INPUT SELECTOR
(ANTENNA IN)
11
7
3
15
10
8
5
16
12
9
1
13
4
6
2
14
MAIN BOARD (1/2)
L
R
(CHASSIS)
Q401 - 406
MUTING
(CHASSIS)
(CHASSIS)
A001
MUTING CONTROL
Q407, 408
REMOTE
IN
(US, CND)
(EXCEPT US, CND)
(FM/ AM TUNER UNIT)
TUX-DSP02
ACCESSORY
Q801 - 803
BATTERY CHECK
DETECT
FU1
10A
32V
14
6
16
5
4
3
2
1
7
7
1
8
8
2
3
4
6
6
4
9
5
15
FL–
2
13
TO
11
FR–
12
16
BATT
14
10
7
FRONT RCH (+)
3
GND
1
(US, CND, E, EA, MX, KR)
5
ACC
4
CN703
8
6
BATT
FRONT RCH (–)
REAR RCH (+)
TO
REM OUT MAX0.4A
FRONT LCH (+)
REAR LCH (+)
REAR LCH (–)
FRONT LCH (–)
REAR RCH (–)
FR+
2
FR–
RR–
RR+
RL+
RL+
REM OUT
FL–
CN703
ACC
RR–
ACC
RL–
RL–
GND
GND
BATT
FR+
RR+
FL+
REM OUT
FL+
13
5
11
15
7
3
1
9
12
10
8
(AEP, RU, UK, AR)
PW1
PW1
I
6
M
H
15
1
C
12
18
K
13
5
F
16
19
8
2
20
B
D
G
11
L
10
E
17
J
9
A
4
3
7
14
1A4C-A2
(AEP, UK)
D313
(Page
23)
Ver. 1.1
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