4-4. BLOCK DIAGRAM — MAIN SECTION —
– 29 –
– 30 –
CDX-4480ESP
: FM
: AM
: CD
Signal Path
2
18
37
34
36
38
16 17 18
1
ANT-FM
L-OUT
16
R-OUT
12
AM-DET
21
13
9
60
20
21
22
36
85
29
15
55
56
76
64
108
80
90
40
95
73
74
92
93
2
5
6
11
10
9
3
4
111
110
109
86
16
15
18
5
20
FM/AM IFC
RECEV/SEEK
11
NC
4
8
10
9
LOL/DX
LOL/DX
FM OSC
AM OSC
PD
X OUT
1
X IN
DIN
4
CLK
2
CE
6
DOUT
IF IN
11 FM IFC
POL MO
10 NC
6
VCO
5
VT
22
ST IND
20
SD
19
S-METER
ANT-AM
FM+B
AM+B
TU+B
LPF
Q607
REG
Q606
ANT+B
COM8V
FM8V
PLL
IC602
X601
7.2MHz
FM8V
AM8V
D601, 602
TU+B
CNJ600
(ANTENNA)
TUNER UNIT
TU1
R-CH
5V REG
Q601
ANT+B
TU5V
L3
L2
L1
33
28
27
23
22
21
20
12
5
3
8
7
11
22 4
CL
DI
CE
TONE
ELECTRONIC VOLUME
IC401
MUTE
STBY
POWER AMP
IC402
CNP501
FL
RL
1
9
2
10
FL+
FL-
RL+
RL-
7
16
13
15
ACC
BATT
ATT
TEST
5
AMP REM.
6
ANT REM.
L REAR
L FRONT
-1
-3
LINE OUT
PJ400
Q101
Q102
LINE MUTE
SWITCH
Q401, 402
AMUT
BUS SO
BUS SI
BUS CLK
BUS ON
RESET
BU IN
BACK-UP CHECK
Q916, 917
ACC CHECK
Q904, 905
8V REG
Q903
ILL SWITCH
Q901, 902
RESET
IC902
COM8V
COM5V
1
2
S900
RESET
Q930
D909
D908
D910
D916
Q906
Q651
S801
(POWER SELECT)
OFF
ON
S802
(FREQUENCY SELECT)
AM 10k
FM 200k
AM9k
FM50k
X801
32.768KHz
X800
3.68MHz
COM8V
COM 8V
AM 8V
FM 8V
BU+B
MODE2
MODE1
STB
COM5V
PLL5V
AM8V
FM8V
BU+B
D904
D905
AMP+B
7
VCC
8
ANT+B
POWER SUPPLY
IC901
F901
10A
2
CD
SECTION
1
CD
SECTION
D401,404
AU MUT
UNI SI
UNI SO
UNI CK
BUS ON
PLL CE
12 NOSE/FI
81 ST IN
83 SD IN
53 S-METER
13 LCD SO/FO
14
64
63
62
1
3
LCD CKO
104 LCD CE
24 SIRCS
11 PLL CKO
10 PLL SO
9 PLL SI
31 DBMOD1
16 DBMOD2
58 VOL SO
59 VOL CK
41 VOL CE
SYSRST
BEEP
AMP MUTE
AMP ON
BU IN
ACC IN
LAMP ON
100
BAND(9k 10k)
TEL MUTE
H
RESET
TEST
PW SEL
X1A
X0A
X0
X1
REGMOD2
REGMOD1
PW ON
DATA
CLK
CE
LCD DRIVE
IC801
LCD801
IR
RECEIVER
IC802
106
107
RE0
RE1
ROTARY
ENCODER
RE801
48
47
KEY IN2
KEY IN1
79
43
KEY ACK
AVRH
46 KEY IN0
72
49
RC IN1
RC IN0
37 AD ON
PL801,
802
LED801-805
LSW801,
803-819
KEY MATRIX
LSW801, 803-819
S802
KEY ACTIVE
SWITCH
Q801, 802
S801
D-BASS
CNP802
(REMOTE IN)
D824
D825
SYSTEM CONTROL
IC801
MOD1
MOD2
CDINL
ANT+B
04
D826
3 2 1 OFF