25
25
CDX-M850MP
CN503
(ANTENNA)
1
4
ANT
L
CDL
3
R
9
RDS
TUNER UNIT
TUX501
40
12
13
15
26
SYSTEM CONTROL
IC303 (1/2)
16
5
QUALITY
13
SCL
14
SDA
7
TU MUTE
TUNER ATT
VOL ATT
28 I2C SIO
27
17
I2C CKO
DAVN
73 TU ATT IN
82 VSM
MUTE
SCL
SDA
R-CH
AML
32 AC OUT L
31 AC IN L
8
MUTE CONDITION
6
S-METER
17
SDA
33 EESIO
16
SCL
34 EECKO
RDS DECODER
IC502
MPX
OSCD
OSCI
4
5
X501
4.3MHz
9
SDA
SCL
19 NS MASK
80 QUALITY
10
DAVN 8
4 PDL
42 MDL
ELECTRONIC VOLUME
IC401
25
OUT LF
24
OUT LR
17
OUT SW
14
SA CLK
16
SA OUT
66
BUS/AUX
83
SA IN
25
ATT
20
BEEP
41
AMP STB
AMPDIAG
9
XOUT
40
8
XIN
A
B
Q408
23
SA CLK
Q171
Q181
Q470
12
5
3
11
2
4
16
22
25
34
30
37
33
31
9
7
29
27
6
20
35
POWER AMP/POWER SUPPLY
IC201
SW1
+10V
AU+8V
+5V
DR+6V
A+5V
AU+5V
D+5V
SW2
VP2
VP1
VP
SDA
SCL
AC GND
A-ATT
STB
DIAG
DISP+B
AU8V
U-COM
MECHA
SERVO
CNP101
FL+
FL–
RL+
RL–
AMP REM
ANT REM
ATT
BATT
ILL
ACC
TEST
FR+
5
6
4
10
2
9
1
12
3
11
FR–
RR+
RR–
19
17
18
13
16
14
7
15
X301
32.768kHz
11
OSCOUT
13
OSCIN
X302
6MHz
R-CH
BATT
ILLUMI
CHECK
Q907
AU +8V
+5V REG
Q501
TU+5V
+5V
REG
IC902
SW
Q380
+4.8V
PJ401
–3
–4
R
L
AUDIO OUT
REAR
CN401
(SUB OUT(MONO))
R-CH
–5
–6
R
L
AUDIO OUT
FRONT
R-CH
–1
–2
R
L
BUS AUDIO
IN
R-CH
32
FL
RL
F901
EEPROM
TU
24
TEL ATT
69
ILL IN
68
ACC IN
63
TEST IN
Q103
ACC DET
Q102
MUTE DRIVE
Q401,402
AEP,UK,E MODEL
2
1
BUFFER
IC410
8
14
AF BUFFER
IC407
11
13
CD
SECTION
CD
SECTION
• Signal path
: FM
: AM/MW
: CD
: CD-R/RW(MP3)
• R-ch is omitted due to
same as L-ch.
4-3. BLOCK DIAGRAM — TUNER SECTION —
(Page 24)
(Page 24)
