20
20
CDX-MP50
• R-ch is omitted due to same as L-ch.
• Signal path
:FM
:AM(MW/LW)
:CD
:CD-R/RW(MP3)
PJ601
(ANTENNA)
2
4
ANT
L
CDL
3
R
6
S-METER
14
SDA
13
SCL
17
SDA(EEP)
16
SCL(EEP)
TUX501
TUNER UNIT
2
45
47
70
27
26
25
7
9
5
19
IC801 (1/2)
SYSTEM CONTROL
IC401
INPUT SELECTOR,
ELECTRONIC VOLUME,
SIGNAL PROCESSOR
AUX L
OUT LF
18
OUT LR
21
OUT RF
20
OUT RR
35
BEEP
ATT
72
67
AMP ON
74
AMP ATT
40
TEL ATT
38
ACC IN
CD L
RADIO L
R-CH
SDA
SCL
MUTE
VOL ATT
VSM
I2C SIO
I2C CKO
EE SIO
EE CKO
DST SEL
AUDIO OUT REAR
CD
SECTION
A
CD
SECTION
B
CD
SECTION
C
CD
SECTION
D
Q904,905
LINE MUTE
SWITCH
Q402
MUTE
R-CH
Q401
MUTE
22 MUTE
4 STBY
16 AUX
11
12
5
3
9
7
IC501
POWER AMP
1
-1
-2
-5
-6
-3
-4
9
2
10
CNP901
R-CH
PJ401
FL+
FL-
RL+
RL-
4
12
FR+
FR-
3
11
RR+
RR-
16 +B (BATT)
13 ATT
5 AMP R
6
8
19
ANT R
GND
R-CH
BATT
F901
10A
Q901
TEL
ATT
Q911,D918,919
TUNER +5V
REG
Q909,910
TUNER ON
SWITCH
Q906,D917
+8V REG
Q907,908
POWER ON
CONTROL
Q921
AMP REM
CONTROL
SWITCH
Q920
AMP B+
SWITCH
Q917
ANT REM
CONTROL
SWITCH
Q922
ANT B+
SWITCH
7 ACC
15 TEST
69
50
TU ON
37
TEST IN
Q902
ACC
DETECT
POW ON
24
SYSRST
25
BUSON
43
BUSSI
44
BUSCKO
42
BUSSO
28
BU IN
86
87
7
TU MUTE
8
MUTE CONDITION
TU MUTE
TU ATT IN
30
88
BATT
Q804
BUS-SO
SWITCH
Q805,806
LIMNKOFF
SWITCH
Q802
SWITCH
BATT
BATT
Q903,D916
+5V REG
BATT
BU+5V
BU+3.3V
+8V
TUNER
+8V
TUNER
+5V
BATT
17
18
L
R
AUDIO OUT FRONT
R-CH
L
R
BUS AUDIO IN
R-CH
L
R
CDR
R-CH
8 CD R
IC803
BUS INTERFACE
8
13 RST
12 BUSON
8 DATA OUT
11 CLK IN
9 DATA IN
10 B/U-C
6
DATA I/O
4
CLK
2
RST
3
BATT
8
7
5
6
4
2
3
1
BATT
CNJ801
BUS
CONTROL IN
DELAY
BATT
D921
1
BUSON
33
1
RESET
S801
RESET
2
IC802
3
+3.3V
REG
2
IC902
BU+5V
RESET
SYSRST
D810
D808
D818
A-ATT
D701
D802
D819
IC701
BUFFER
BU-CHECK
BUSON
BUS-SI
BUS-CLK
BUS-SO
LINK-OFF
2
6
5
3
7
1
Q801,D801
BATT DET
S803
(FREQUENCY SELECT)
FM 200k
AM 10K
FM 50k
AM 9K
3-4. BLOCK DIAGRAM — MAIN SECTION —
(Page 19)
(Page 19)
(Page 19)
(Page 19)
