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CDX-R3300/R3300T
3-3. BLOCK DIAGRAM — TUNER SECTION —
TUNER UNIT
TU1
J1
4
1 ANT
L
(ANTENNA)
R
3
RDS OUT
9
S-METER
6
SDA
14
SCL
13
QUALITY
5
E2P-SDA
17
E2P-SCL
16
MUTE CON
8
TUN MUTE
7
VDD5V
11
VCC8.3V
10
BUS-LCH
5
NC
CD-L
C2
CDL
9
A
CD
CDR
R-CH
(Page 19)
SECTION
TU-L
B2
7
R-CH
SDA
31
SCL
30
29
R3300
RDS DEMODULATOR
IC50
16 MPX
SDA
12
SYSTEM CONTROL
11
SCL
9 XTI
60
VOLATT
XTO
10
X50
82
DAVN
INTN
15
8.664MHz
1 7
RDS POWER
CONTROL
3.3V
Q50,51
93
VSM
79
I2C_SIO
81
I2C_CKO
R3300
NS MASK
92
QUALITY
SWITCH
Q1
66
NS-MASK
68 EEP_SIO
67
EEP_CKO
R3300
28
TU_ATTIN
64
TU_ATT
+5V REG.
AUDIO 8.3V
Q3
B
M-ATT
BU IN
CD
SYS RST
SECTION
(Page 19)
SOUND CONTROL
ELECTRONIC VOLUME
IC400
OUTF2
EFFECT
FL
23
OUTR2
RL
TONE
22
EVR
SUB-L
I2C
17
CONT.
BUS
OUTS2
MUTE
IC500 (2/3)
AMPSTB 70
BEEP 85
TELATT 23
ACCIN 21
TESTIN
22
LINE MUTE
24
ATT
CONTROL
BATT
D493
Q491,492
59
DIAG
BACK-UP CHECK/
OVER VOLTAGE
LOW VOLTAGE
BUIN
31
CHECK
Q605,D602,603
Q606,607
1
4
RESET
SYSRST 37
IC502
RESET 19
D351
S103
(RESET)
20
20
POWER AMP
IC300 (1/2)
5
12
3
MUTE
Q440
9
11
7
MUTE
Q450
STB
22
R-CH
BEEP
16
MUTE
Q480
CONT.
SDA
2
I2C
VP2
6
SCL
BUS
4
VP1
20
R3300
TEL
ATT
Q701
ACC
CHECK
Q702
MULTIPLE VOLTAGE
REGULATOR
IC300 (2/2)
D302
AMP-REM
29
D301
ANT-REM
27
25
DIAG
37
3.3V
B.UP+B
PANEL+B
34
PANEL+B
MECH 6V
33
MECH 6V
SERVO 3.3V
31
SERVO 3.3V
AUDIO 8.3V
AUDIO +B
30
VP
35
DET.
BATT
BATT
3.3V
• Signal path
• R-ch is omitted due to same as L-ch.
L
J400
-1
AUDIO OUT REAR
R
R-CH
-2
CN700
1
FL+
9
FL-
2
RL+
10
RL-
4
FR+
12
FR-
3
RR+
11
RR-
13
ATT
7
ACC
15
TEST
5 AMP-R
6 ANT-R
8 GND
19
17
F901
10A
18
16 +B (BATT)
: FM
: AM (CDX-R3300T) or MW (CDX-R3300)
: CD
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