Block Diagram -Main Section - Aiwa CDC-Z137 Service Manual

CDC-Z137
3-3. BLOCK DIAGRAM — MAIN SECTION —
AUX-RCH
J731
AUX
J101
(ANTENNA)
1 AMANT
2 FMANT
CD L
CD R
8V(CD)
CD INSIDE
LM SW
SW1
SW2
FEM+
CD
A FEM-
SECTION
CD RES
(Page 19)
RW
RWC
WRQ
SQOUT
DRF
COIN
CQCK
LP UP
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)
64 L IND
AM/FM OSC 11 75 FMOSC
74 AMOSC
LPF(AM)
FMVT 6 78 EO1
Q101,102
AMVT
14
IF REQ/OUT
20 16 IF REQ
70 IF(FM/AM)
SD/ST 14 ST/SD
22
AM DX/LOC 3 15 LOC/DX
LOCAL
FM DX/LOC SWITCHING
4
XIN
Q109 1
X901
4.5kHz
80 XOUT
CD-RCH
CD+8V
62 CD INSIDE
33 LM SW
SW1
52
51 SW2
35 FEM+LM+
36 FEM-LM-
49 CD RES
RW
37
48 RWC
47 WRQ
11 SQOUT
46 DRF
12 COIN
13 CQCK
38 LP UP
ELECTRONIC VOLUME
IC401
LROUT
4
VOL/
FADER
LFOUT
TONE
5
MUTE MUTE
DI 1 Q402
Q401
CE 2
36
CL
IC901
EVOL CLD 32
EVOL CE 20
EVOL DO 6
SHUTDOWN
MUTE
BATT
Q591,592
MUTE
CONTROL
A MUTE 40
Q441,442
POWER MUTE 43
42
STBY MUTE
BEEP 44
61
ACC DET
AM+B
SWITCHING
AM+B COM+9V
Q105
AM 59
FM+B
SWITCHING
COM+9V
FM+B
Q106
FM 58
SW+8V REG
CD+8V
BATT
Q831-833
CD ON 39
BATT DET
IC941
BATT IN 69 1 OUT IN 2 BATT
POWER CONT 41
R ENCOD2 53 RE 2
R ENCOD1 54 RE 1
LCD CLO 9 LCD CLO
FRONT
B
LCD DI 7 LCD DI
SECTION
LCD DI 55
(Page 21)
LCD DO 8 LCD DO
LCD CE 10 LCD CE
RESET 66 RESET
20 20
J401
L
AUDIO OUT
REAR
R
R-CH
POWER AMP
IC501
CNP801
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-
7 ACC
PON+B 6 ANT-R
16 BATT
18
F901
+5V REG
BU+5V
BATT 17
Q811
+B
19
BATT +B
COM+9V REG SW+14V REG
COM+9V
BATT
Q821 Q801
+9V
PON+B
POWER CONTROL
SWITCHING
Q802
• Signal path
: CD
: FM
: AM
: AUX
• R-ch is omitted due to same as L-ch.