Block Diagram -Main Section - Aiwa CDC-R237 Service Manual

Fm/mw/lw compact disc player
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CDC-R237
4-3. BLOCK DIAGRAM — MAIN SECTION —
AUX-RCH
J601
AUX
ANT101
(ANTENNA)
1
AMANT
2 FMANT
CD L
CD R
RESET
CD
CDS CS
A
SECTION
CDS CLO
CDS DO
(Page 19)
CDS DI
CDS SRQ
SW1
AUX(L)
14
TUN(L)
LCH
16
15
CD(L)
17
RCH
17
TUN-RCH
13
LSELO
12
LIN
SYSTEM CONTROL
LEVEL AMP
TU101
Q451
(TUNER UNIT)
25
LEVEL IND
RDS DECODER
IC151
DET OUT
24
4
MUX
DATA
2
58 RDS DI
CL
16
51 RDS CLK IN
XOUT
XIN
14
13
X151 4.322MHz
AM/FM OSC
11
44 FMOSC
45 AMOSC
LPF(FM)
FMVT
6
47 EO0
Q105,106
LPF(AM)
AMVT
14
48 EO1
Q108,109
IF COUNT
20
39 IF REQ
41 AM IF
42 FM IF
SMETER
21
64 RDS MODE
SFR101
31 FM/AM S METER
SD/ST IND
22
54 ST IND/SD IN
AM DX/LCL
3
21
LOC/DX
LOCAL
SWITCHING
FM DX/LCL
4
37
X1
Q101
X901
6.3MHz
36 X2
50
RESET
SW901
(RESET)
CD-RCH
94
CDS RESET
96
CDS CS
10
CDS CLO
8
CDS DI
9
CDS DO
79
SREQ
86
SW1
ELECTRONIC VOLUME
IC401
LROUT
4
VOL/
FADER
LFOUT
TONE
5
MUTE
MUTE
DI
1
Q403
Q401
CE
2
36
CL
IC901
EVOL CLO
18
EVOL CE
20
EVOL DO
19
SHUTDOWN
MUTE
BATT
Q501,502
MUTE
CONTROL
AF MUTE
60
Q405,406
POWER MUTE
65
56
ST BY MUTE
BEEP
59
PHONE MUTE
24
23
ACC DETECTOR
AM+B
SWITCHING
AM+B
COM+9V
Q102
AM
67
FM+B
SWITCHING
COM+9V
FM+B
Q103
FM
66
SW+8V REG
CD+8V
BATT
Q803,806-808
CDS SLEEP
95
BATT DET
IC902
BATT IN
1
1
OUT
IN
2
BATT
POWER CONT
57
RE2 IN
81
RE 2
RE1 IN
80
RE 1
LCD CLO
5
LCD CLO
FRONT
LCD DI
3
LCD DI
B
SECTION
(Page 21)
LCD DO
4
LCD DO
LCD CE
6
LCD CE
DFP IN
2
DFP IN
20
20
J401
L
AUDIO OUT
REAR
R
R-CH
POWER AMP
IC501
CON851
RL(+)
9
2
RL+
RL
11
RL(-)
7
10
RL-
FL(+)
5
1
FL+
FL
12
FL(-)
3
9
FL-
22 MUTE
4 ST-BY
16 AUX IN
3
RR+
11
RR-
R-CH
4
FR+
12
FR-
13 TEL MUTE
7 ACC
PON+B
6 ANT-R
16 BATT
18
F901
+5V REG
BU+5V
BATT
17
Q809,810
+B
19
BATT
+B
POWER
COM+9V REG
COM+9V
CONTROL
BATT
Q802,805
Q801,802
LAMP+B
PON+B
• Signal path
: CD
: FM
: AM
: AUX
• R-ch is omitted due to same as L-ch.

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