19
19
CDC-R304/X104EE/X204/X304/X444
1 ANT
7 TU-LCH
SOUND CONTROL,
ELECTRONIC VOLUME
IC401
J1
(ANTENNA)
TU1
(TUNER UNIT)
POWER AMP
MULTIPLE VOLTAGE
REGULATOR
IC750
SYSTEM CONTROL
IC501 (2/3)
CN601
6 TU-RCH
R-CH (FRONT)
R-CH (REAR)
BATT
9 CD-LCH
5 AUX-LCH
3 AUX-RCH
8 CD-RCH
R-CH
4
3
10
VCC
11
TU VDD
15
E2P VDD
13
TU-SCL
14
TU-SDA
9
RDS
6
5
8
MULTI
CONDITION
QUALITY
7
S-METER
16
TU MUTE
E2P SCL
17
E2P SDA
99 L METER
82 DAVM
28 TU ATTIN
92 QUALITY
66 NS MASK
93 VSM
64 TU ATT
67 EEP CKO
68 EEP SIO
AUDIO+8.3V
TU+5V
BACK UP+3.3V
L
R
CD-L
J601
(AUX IN)
R-CH
R-CH
15 OUT-SEL-R
OUT-SEL-L
16
R-CH
17
18
OUT SUB L
OUT SUB R
R-CH
L
R
5
3
OUT-FL+
OUT-FL–
OUT-RL+
OUT-RL–
9
7
29
27
AMP-REM
R-CH
ANT-REM
BATT
30
37
AUDIO+8.3V
B.UP+B
31
33
SERVO+3.3V
MECHA+6V
34
PANEL+B
TU+5V
BATT
25
24
OUT-FR
OUT-RR
29
MUTE
2 SDA
AUDIO+8.3V
BACK UP+3.3V
SERVO+3.3V
MECHA+6V
PANEL+10V
4 SCL
SDA
SCL
16 BEEP
22 STB
25 DIAG
AUDIO+8.3V
35 VP
15
13
7
10
12
11
16
1
9
2
4
3
5
6
30
31
SCL
SDA
SCL
SDA
SCL
SDA
SCL
SDA
81
I2C SCK
79
I2C SIO
60
VOL ATT
24
ATT
85
BEEP
70
AMPSTB
59
DIAG
31
BUIN
22
TEST IN
12 IN-FL
FL+
FL–
RL+
RL–
FR+
FR–
RR+
RR–
AMP-REM
ANT-REM
ACC
TEST
23
OUT-FL
11 IN-RL
22
OUT-RL
MUTE
Q431
MUTE
Q481
AUDIO OUT
REAR
MUTE DRIVE
Q491,492
36
BUS ON
37
SYS RST
16 MPX
9 XTI
10 XTO
11
SCL
12
SDA
SCL
SDA
15
INTN
7
VDDD
VDDA
1
21
ACC IN
ACC CHECK
Q631
TU+5V REG
Q1
BATT
LOW VOLTAGE
DETECT
Q581
BATTERY
CHECK
Q582
REAR L/R
CUT OFF
SWITCH
Q403
DSSA ON/OFF
SWITCH
Q402
NS MASK
SWITCH
Q3
LEVEL METER
VOLTAGE DETECT
D401,402,Q401
RDS DEMODULATOR
IC51
MUTE
Q451
ATT
23
TEL ATT
57
DSSA
TEL ATT
Q651
D491,492
FU601
J331
D580
R304/X104EE/X304:
AEP,UK MODEL
D581
CD
SECTION
A
BATT
B+ SWITCH
Q51,52
BACK UP
+3.3V
OVER VOLTAGE
DETECT
Q580
X51
8.664MHz
R304
R304
• Signal Path
• R-CH is omitted due to same as L-CH.
: CD PLAY
: FM
: AM/MW/LW
: AUX
3-3. BLOCK DIAGRAM — MAIN SECTION —
(Page 18)
