Aiwa CR-LA15 YZ, Service Manual

Page: 7 / 15

-7-
SCHEMATIC DIAGRAM -1/1
IC1
C3
39p
C1
TC1
TC1,TC2,
L1,L2
VC1
TC2 L1
6.5T
FM RF 4.5T
FM OSC
L2
VC2
20p
C2
PVC1
18p
C5
3p
R5 220K R6 220K
C40
BPF1
RF-OUT
V-REF VCC QUAD VCC GND IF-OUT IF-REQ SP-OUT FM-IF
IN
AM-IF
IN
AM-OSC AM-MIX
MPX-IN LPF2B LPF2A VCO LPF1 R-OUT L-OUT ST-IND
A-IN B-IN VCC B-BASE
A-BASE A-OUT B-OUT GND
DET
OUT
AM-RF
IN
PILOT
IN
PW-SW
MIX-OUT OSC VCC
RF-IN
AFC-C
AFC-A GND
IC1
TA7371AF
IC2
TA2022AFN
IC3
NJM2096M
1
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
2 3 4
8 7 6 5
1 2 3 4
8 7 6 5
0.022
C7
T1
FM-IFT
0.022
C8
0.47
C12
C13 0.7
0.1
R8
22K
R7
12K
R10
4.7K
R9
15K
VR2
PIN NO. 1 2 3 4 5 6 7 8
PIN NO. 1 2 3 4 5 6 7 8
PIN NO. 1 2 3 4 5 6 7 8
9 10 11 12
PIN NO. 13 14 15 16 17 18 19 20 21 22 23 24
FM 0.8 1.36 0.9 - 1.36 1.36 1.36 -
FM 0.7 0 0 0.8 1.36 1.36 1.36 1.36
ON 0 0 1.48
E C B
E C B
ON 1.48 0.7 0.8
E C B
BASS OFF 0 0 0.64
BASS ON 0 0 0
FM 0 0.9 0.7 0.8 0.7 0 0.7 0.85
0 - 1.36 -
FM - 0.55 0.55 - 1.26 - - 0.1 0.1 0.1 1.36 0
SW1
C-SFR, 15K
POZ3AN-1-153N
C9
560p
C14
820p
C11
0.47
C15
0.1
C18
R12 2.2K
R14 3.9K
R15 3.9K
R13 2.2K
0.015
C20
0.068
Q2
BC847C
Q3
BC847C
C16
0.047
C26
0.047
C21
0.068
C27
0.47
R17
2.2
R21
2.2
R11
3.3
R17
0.015
C31
0.47
C23
SW2-B
SW2-A
BBS-ON
PW-ON
PW-OFF
BBS-ON
PW-ON
PW-OFF
0.022
C22
220-4
C10
3.3-50
CF3
FILTER CDA 10.7 C33
100-2
C28
0.47
VR1-A
VOLUME,
DIA=14MM
XV010702GP
VR1-B
VOLUME,
DIA=14MM
XV010702GP
C29
2200p
C30
2200p
C27
0.47
C37
100-2
C36
(R03)
100-2
BATTERY
1.5V
Q4
2SA1586G
Q5
2SA1586G
R2
C6
47
R4
330
CF2
10.7Mhz
MA5C10
R3
15K
C4
0.01
Q1
2SC27140
0.01
FM FRONT-END
IC2 (TA2022AFN)
IC1 (TA7371AF) Q4,5 (2SA1586G) Q2,3 (BC847C)
Q1 (2SC27140) IC3 (NJM2096M)
VOLTAGE CHART
IC2
FM IF , FM MPX
T1
FM IF ADJ
L1,TC1
FM FREQUENCY RANGE ADJ
L2,TC2
FM TRACKING ADJ
VR2
VCO ADJ
Q1
FM IF AMP
Q2 Q3
IC3 Q4 Q5
SUPER BASS
POWER AMP
R18
R20 12
R19 12
2.2
C32
0.47
C34
L4 1uH
L5 22uH
L3 1uH
L6 1uH
100-2
JK1
HP JACK
MAIN C.B
FM
SIGNAL :