Sharp CD-CH1000, Service Manual

Page: 26 / 80

CD-CH1000
– 26 –
Figure 26 BLOCK DIAGRAM (1/6)
TP301
FM
AM
AM IF
AM IF
FM IF
FM OSC.
SWITCHING
FM RF
OSC BUFF
SWITCHING
SWITCHING
3
3
1
2
1
2
T311
X351
456kHz
IC303
LA1832S
CF351
FM IF
T351
Q351
CF352
CF302
FM IF
10.7MHz
AM
ANTENNA
AM OSC.
VD301
BF301
T312
CNP303
L312
IC301
TA7358AP
FM FRONT END
VD302
SVC211C
Q371
Q360
IC302
LC72131
X352
4.5MHz
BAND
PASS
FILTER
VD303
SVC211C
Q302
FM
MUTE
LEVEL
VR351
10K(B)
FM IF DET./FM MPX./AM IF
IC302
LC72131
PLL(TUNER)
T306
T306
VT_CK
TUN_R
VSM
TUN_L
A_+B
D_GND
C2B_CE
C2B_CL
C2B_DI
C2B_DO
3
2
1
1 2 3
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
17
16
15
14
13 12
11
10
9
8
7
6
5
4
3
2
1
FM IF IN
AM MIX OUT
AM OSC OUT
FM AFC
AM OSC IN
AM RF IN
AM LOW CUT
VSM
FM/AM OUT
MPX
VCO
MPX IN
R-CH OUT
L-CH OUT
PHASE
(FM/AM)
PHASE
IF OUT
VCC
FM DET
STEREO
SD
GND
AM IF IN
REG
MO/ST
3 2 1
22
21
20
19
18
17
16
15
14
13
12 11
10
9
8
7
6
5
4
3
2
1
NC
MUTE
IO2
IF IN
X OUT X IN
CE
CL
DI
DO
AM IN
FM IN
VDD
PD
AIN
AOUT
VSS
FM
MW
MO/ST
ST IND
NC
C2B_CL
C2B_DI
C2B_CE
C2B_DO
FM/AM
LOOP
ANTENNA
18
+B
+B
+B
A_+B
R
P
R-C
L-C
A_+B