Sharp HT-CN300 Service Manual page 26

HT-CN300
TUNER PWB-B2
A
CHASSIS
GND
B
AM LOOP
ANTENNA
CNP301
FM
ANTENNA
1
1
2
2
3
3
C
D
E
F
D303
DS1SS133
D304
DS1SS133
C301
0.001
CHASSIS
GND
G
C389
0.001
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.
1
AM TRACKING
AM ANTENNA
C323
0.022
C338 0.001
D302 DS1SS133
D301 DS1SS133
AM BAND
COVERAGE fL
T306
AM OSC.
C337
0.022
FM SIGNAL
AM SIGNAL
R369
47
D305
DS1SS133
D306
DS1SS133
8 7 6 5 4 3 2 1
FE301
FM FRONT END
2 3
Figure 26 SCHEMATIC DIAGRAM (13/17)
T302
C330
12P(UJ)
VD301
SVC348S
C339
100P
C335
R323
330P
68K
C334
15P(UJ)
CF302
C347
0.022
+B
L342
2.2µH
C341
0.022
+B
+B
4
– 26 –
C331
0.047
C332
C342
R358
0.022
0.022
8.2K
L353
1mH
FM MUTE
LEVEL
R336
10K
R351
5.6K
1
3
2
AGND7
VDD
C397
0.022
R382
150
+B
TP301
C310 100P
C311 100P
C312 100P
+B
5
C343
33P
C362
C361
3.3/50
0.022
24 23
1 2
T351
AM IF
C394
47/25
C392
0.001
R381
10K
C393
R380
1/50
1.5K
C381
12P(CH)
22 21 20 19 18
IC30
X352
LC721
4.5 MHz
PLL(TUN
C382
15P(CH)
1 2 3 4 5
D352
DS1SS1
R3
5.
R371
4.7K
3
2
1
Q371
KTA1266 GR
6