Read Sony CDX-M20 Service Manual online
CDX-M20
CDX-M20
19
19
4-4. SCHEMATIC DIAGRAM - MAIN Section (3/3) -
• See page 22 for IC Block Diagrams.
B
E
3
F
11
D
A
7
2
10
G
C
6
4
1
9
8
5
KEY
BOARD
A
CN901
(2/3)
MAIN
3
BOARD
(1/3)
MAIN
2
BOARD
IC B/D
0
0
0
0
0
0
0
0
0
0
0
0
4.1
4.1
3.8
0
0
4.1
4.1
4.1
4.1
4.1
4.1
8.4
3.3
3.3
3.7
4.1
4.1
3.3
3.3
3.3
3.3
3.3
3.8
3.8
3.8
3.8
(3/3)
MAIN BOARD
R
L
(CHASSIS)
(CHASSIS)
IC401
50V
10
C412
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
C413
50V
10
C415
220
R405
220
R402
R409
1k
10k
R407
10k
R403
50V
10
C406
1k
R413
10k
R404
DRC5114T0L
Q406
50V
10
C414
50V
10
C417
R406
1k
10k
R408
DRC5114T0L
Q405
1k
R410
50V
10
C416
10k
R411
10k
R412
18p
C104
2.2k
R420
12k
R418
18p
C102
12k
R419
18p
C101
18p
C103
1000p
C106
1
C426
1
C427
L402
JL037
JL038
JL040
JL041
JL042
JL043
JL044
JL045
JL046
JL047
JL048
JL049
JL050
R426
0
C422
1
C424
1
JW001
JW002
JL039
1k
R416
1k
R417
0
R425
1000p
C429
1000p
C430
0
R1
J001
(ANTENNA IN)
CN101
15P
3
AUX-LCH
2
KEY-GND
10
SIRCS
13
LCD-CLK
7
RE-1
4
AUX-RCH
14
ILL+B
11
LCD-DATA
1
D-GND
8
KEY-1
5
AUX-GND
15
PANEL
12
LCD-CE
9
KEY-0
6
RE-0
CAM002
CAM003
RF_ANT_IN
RF_GND
AUDIO_OUT_L
AUDIO_OUT_R
RSTN
SCL
SDA
+8.5V
POWER_GND
RF_GND
AUDIO_OUT_L
AUDIO_OUT_R
RSTN
SCL
SDA
+8.5V
POWER_GND
TU1
9
4
5
5
3
1
2
2
6
7
8
8
0
R2
0
R3
4.7uH
L1
16V
C2
47
1
C445
1
C446
0.1
C432
LTC614TUFP8T106
Q402
LTC614TUFP8T106
Q401
DRC5114T0L
Q404
DRC5114T0L
Q403
CL062
CL063
J401
0.1
C434
CL065
FB804
C423
2.2
2.2
C428
L101
0
FB401
0
FB402
RKZ6.8B2KGP1
D101
RKZ6.8B2KGP1
D102
RKZ6.8B2KGP1
D108
RKZ18B2KGP1
D105
1
2
3
4
5
6
2
3
4
5
6
7
8
9
9
10
11
12
11
12
BUS1
BUS2
BUS3
SAIN
SADATA
RE-1
KEY1
KEY0
SIR
L-CE
L-CLK
SACLK
RE-0
XM_LCH
XM_AGND
XM_RCH
CD_LCH
CD_RCH
I2C_SCL
I2C_SDA
NOSE-SW
L-DA
(FM/AM TUNER UNIT)
TUX-DSP02
AUDIO OUT
REAR/SUB
ELECTRICAL
VOLUME
Q401 – 406
MUTING
(Page 17)
(Page 18)
(Page 21)
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