20
20
CDX-R3300EE
J1
(ANTENNA)
1
ANT
CDL
CDR
CD-L
TU-L
R-CH
3
R
AUDIO 8.3V
TUNER UNIT
TU1
6
S-METER
14
SDA
SYSTEM CONTROL
IC500 (2/3)
24
ACCIN
21
TELATT
23
AMPSTB
70
BEEP
85
CD
SECTION
A
CD
SECTION
B
3
11
CN700
1
9
FL+
FL-
2
10
RL+
RL-
4
12
13
7
FR+
FR-
15
RR+
RR-
TEST
ACC
ATT
16
+B (BATT)
8
GND
R-CH
F901
10A
TU_ATT
BATT
3.3V
17
19
18
BATT
EEP_CKO
67
VSM
13
SCL
ATT
BATT
D493
59
TESTIN
DIAG
22
93
VOLATT
60
SOUND CONTROL
ELECTRONIC VOLUME
IC400
NC
BUS-LCH
5
C2
9
B2
7
SDA
SCL
MUTE
CONT.
EVR
29
I2C_SIO
I2C_CKO
79
81
17
E2P-SDA
16
E2P-SCL
7
TUN MUTE
11
VDD5V
10
VCC8.3V
68
EEP_SIO
64
R-CH
25
29
AUDIO OUT REAR
-1
L
R
-2
R-CH
J400
5
AMP-R
27
35
37
34
33
31
30
6
ANT-R
BEEP
STB
FL
RL
SUB-L
4
SCL
2
SDA
CONT.
9
7
6
20
POWER AMP
IC300 (1/2)
MULTIPLE VOLTAGE
REGULATOR IC300 (2/2)
VP2
VP1
• Signal path
: FM
: AM
yyy
: CD
• R-ch is omitted due to same as L-ch.
12
BUIN
M-ATT
31
4
L
OUTF2
23
OUTR2
22
SYSRST
37
RESET
19
+5V REG.
Q3
BACK-UP CHECK/ LOW VOLTAGE
CHECK
Q606,607
OVER VOLTAGE
DET.
Q605,D602,603
RESET IC502
LINE MUTE
CONTROL
Q491,492
TEL ATT Q701
I2C BUS
ACC
CHECK Q702
MUTE Q440
MUTE Q450
11
MUTE
TONE
INPUT SELECTOR
EFFECT
OUTS2
17
MUTE Q480
5
3
DIAG
AMP-REM
ANT-REM
B.UP+B
PANEL+B
MECH 6V
SERVO 3.3V
AUDIO +B
3.3V
PANEL+B
MECH 6V
SERVO 3.3V
AUDIO 8.3V
VP
D302
D301
D351
S103
(RESET)
MUTE
16
22
I2C
BUS
31
30
BU IN
SYS RST
14
3-3. BLOCK DIAGRAM — TUNER SECTION —
(Page 19)
(Page 19)
