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35 35
CDX-M620/M670
AJ1
(ANTENNA)
1
10
2
AM ANT
MPX
SA CLK
SA OUT
8
AMDET
9
RDSDET
FM ANT
TUNER UNIT
TUX201
FM AMP
Q202
NOISE
CANCEL
IC201
Q203
13
11
15
14
20
21
17
18
31
50
56
76
SYSTEM CONTROL
IC501 (2/3)
16
20
DC-DC
CONVERTER
IC306
51
8
14
S METER S-METER
NS MASK
52
MPTH
75
DAVN
QUALITY
VOL ATT
EXT ATT
QUAL
SCL
SDA
S METER
MP IN
AM
MPX
38
SA OUT
35
SA CLK
33
AC INL
38
ACOUTL
12
SDA
70
I2CSDA
13
SCL
71
I2CSCL
17
SDA
10
E2PSDA
18
SCL
11
E2PSCL
RDS DECODER
IC202
MPX
OSCO
OSCI
LV IN
4
5
X201
4.3MHz
9
SDA
SCL
10
MPTH
2
DAVN
8
4
28
AUXL
OUT FL
43
MDL
ELECTRONIC VOLUME
IC305
27
OUT RL
24
SWR
55
ST-BY
16
TEL ATT
95
ILL IN
81
ACC IN
73
X1A
74
X0A
84
TEST IN
83
PW ON
92
X0
93
X1
114
TUN ON
DISPLAY SECTION
3
CD
SECTION
4
ATT
CDL
IC310
3
5
1
7
LINE
AMP
IC304
3
5
1
7
PRE
AMP
IC307
Q301
Q303
Q305
Q309
MUTE
CONTROL
Q310,312
12
5
3
11
22
4
9
7
POWER AMP
IC309
MUTE
STBY
CN101
FL+
FL
RL+
RL
TEL MUTE
ILL
ACC
TEST
FR+
13
14
7
15
4
10
2
9
1
12
3
11
AUDIO 9V
FR
RR+
RR
5
AMP REM
6
ANT REM
16
BATT
X501
32.768kHz
X503
3.68MHz
ILLUM CHECK
Q407
POWER
CONT
Q401
ACC CHECK
Q405
POWER
CONT
Q110,111
Q406
R-CH
BATT
BATT
9V
TUNER 8V
TUNER 5V
POWER
CONT
Q107,108
REG
Q201
9V
POWER
CONT
Q306-308
BATT
Q402
Q404
CN301
CN302
R
L
SUB OUT (MONO)
3
4
R
L
AUDIO OUT
REAR
R-CH
5
6
R
L
AUDIO OUT
FRONT
R-CH
1
2
R
L
BUS AUDIO IN
R-CH
53
AEP,UK,E
FL
RL
F901
Signal path
: FM
: AM/MW
: CD
EEPROM
-11V
+11V
31
IC310
57
EXCEPT M670:US
EXCEPT M670:US
M670:US
EXCEPT M670:US
EXCEPT M670:US
M670:US
R-ch : same as L-ch.
4-4. BLOCK DIAGRAM — TUNER SECTION —
(Page 36)
(Page 34)