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FM SIGNAL
MAIN PWB-A(1/3)
IC303
PIN
NO. VOLTAGE
IC302
1
2.1V
PIN
NO. VOLTAGE
2
4.9V
3
1
2.1V
2.4V
4
2
2.1V
0V
5
0V
3
0V
6
4
4.8V
0V
7
5
4.95V
0V
8
2..8V
6
4.9V
9
7
4.9V
0.2V
10
8
3.7V
0V
11
3.6V
9
0V
12
10
3.6V
3.8V
13
11
3.8V
4.9V
14
1.3V
12
0V
15
13
1.3V
2.2V
16
14
2.1V
0V
17
2.3V
15
0V
18
16
1.2V
2.5V
19
17
0V
4.9V
20
1V
18
1V
21
19
3.6V
1V
22
20
3.6V
0.9V
23
4.9V
21
0V
24
22
3.5V
2.4V
L321
3.9µH
C302
0.001
C332
0.022
C338
0.001
D302
1SS133
CNP301
D301
AM ANTENNA
1SS133
TERMINAL
AM
1
L341
BALUM
2
GND
D303
1SS133
D304
1SS133
C301
0.001
SO301
FM
ANTENNA
TERMINAL
FM
75ohms
L342
2.2µH
8
7
6
5
4
FE301
FM FRONT END
7
AM SIGNAL
( ):AM
ICT21
OTHER:FM(ST)
PIN
NO. VOLTAGE
1
2.6V(0.2V)
2
2.6V(0V)
3
5.2V(0V)
4
0V(0V)
5
2.6V(0V)
6
2.6V(0V)
7
0V(0V)
8
0V(0V)
9
0V
10
0V
11
0V
12
2.6V(0V)
13
2.7V(0V)
14
5.2V(0V)
15
0V(0V)
16
0V
QT21
17
0V
KTC3199 GR
18
0V
RT34
19
0V(0.6V)
CT37
56K
0.022
20
0V(5V)
21
4.8V(4.8V)
2.6V
22
0V(0V)
(0V)
23
0V(0V)
RT33
24
56K
0V(0V)
C336
0.022
C342
0.022
VR351
AMTRACKING
10K(B)
FM MUTE
LEVEL
C334
C331
10/50
0.047
FM IF
T302
CF302
1
3
AM BAND
COVERAGE
2
FMIF
CF301
R349
2
33
R382
150
0.8V
1
3
0V
R346
R347
330
Q301
9.4V
6.8K
2SC380 O
C381
12P
FM IF AMP.
(CH)
C341
0.022
C382
C383
15P
150P
(CH)
CONTROLLER
C384
0.001
3
2
1
8
Figure 39 SCHEMATIC DIAGRAM (2/20)
( ):AM
OTHER:FM(ST)
24
23
22
5.2V
(0V)
ICT21:
2V
RDS
(0V)
CT36
LC72720
0.022
RT32
1K
1
2 3
CT21
LT21 2.2µH
47/10
L354 LOW PASS FILTER
L354
R358
8.2K
L353
1mH
R350
2.7K
C367
1/50
24
23
22
21
20
19
18
1
2
3
4
5
6
7
R352
1K
1
3
T351
2
AM IF
C352
R393
10/16
1K
C380
10/16
C397
C394
C392
0.022
47/16
0.001
R377
47K
R381
C393
R380
L351
10K
1/50
1.5K
100µH
C385
0.01
C386
22
21
20
19
18
17
16
15
14
13
12
330P
IC302
LC72131
1
2
3
4
5
6
7
8
9
10 11
R374
1K
R378
82K
IC302:
PLL
Q371
4.8V
KTA1266 GR
4.9V
R371
1K
0V
9
10
– 39 –
CT28
47/10
TP TP
LT22
CT29
2.2µH
0.022
21
20
19
18
17
16
15
14
13
ICT21
4
5
6
7
8
9
10 11
12
CT26
22P
CT25
(CH)
560P
R364
5.6K
C373
R363
0.018
5.6K
C371
1/50
MUTING
Q353
KTC3199 GR
0V
R365
C372
10K
1/50
0.6V
0V
17
16
15
14
13
R367
C375
1K
3.3/50
0V
8
9
0.6V
10 11
12
0V
Q354
R353
KTC3199 GR
270
R355
3.3K
TUNER
R354
C356
MUTE
3.9K
0.001
RT48
390
C355
22P
RT49
390
CT43
L352
10/16
100µH
+B
ZD351
UZ5.1BSB
C396
100/10
C395
0.022
R392
390
R391
390
11.1V
11V
10V
R383
5.6K
R395
C391
47K
47/16
+B
D352
1SS133
R360
4.7K
0V
ZD352
1
MTZJ3.9B
+B
2
3
3.6V
R387
0V
Q361
22K
KRC107 M
D351
1SS133
11
MD-X8H
R368
33K
R366
10K
C389
5600P
R397
5.6K
R398
5.6K
C390
5600P
R370
1K
I
J
K
A_10V
L
TUN_LCH
32
TUN_GND
N
TUN_RCH
O
H G F E D C B A
TO SYSTEM
P40(1-8) P41(7-12)
12
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