Sharp CD-C612 Service Manual page 16

CD-C612
FM AM LOOP
ANTENNA ANTENNA
1 3
BF301
FM B.P.F
AM TRACKING
T331
FROM CD SECTION
CNP11
L-CH
TAPE 1
R-CH
PB HEAD
REC
P.B
L-CH
TAPE 2
R-CH
REC PB HEAD
AC BIAS
ERASE
HEAD
IC301
TA7358AP
1 6
FM FRONT END
9
2 3 4 5 7 8
FM OSC
FM RF
L302
L303
Q302
OSC BUFF
AM BAND
COVERAGE
T333
CNS11
1
2
3
AN7345K
PLAYBACK AND RECORD
/PLAYBACK AMP.
L(T1)
1
R(T1) 24
L(T2)
2
R(T2) 23
SWITCHING L NF
3
4
R NF
Q103~Q106
POP REDUCE 6 T1/T2
REC
L REC
9
R REC 16
REF 14
12
NOR/
HIGH
SWITCHING SWITCHING
Q107
Q108
Q109
SWITCHING
BIAS
OCS
Q128
L104
Figure 16 BLOCK DIAGRAM (2/3)
– 16 –
FM IF FM IF
+B4
CF301
T301
AM IF
T351
FM IF IN
1 3
AM MIX
IC303
LA1805
FM/AM IF MPX.
FMOSC
24 23 22
X352
4.5MHz
VT
20 1 22 15 16
OSC
IC302
LC72131
PLL (TUNER)
7 10
FM
FM +B
Q344
SWITCHING
JK601
VIDEO
L
R
IC101
+B4
13
P.B.
4 PB
L
21
R
5
20
H/N
7 L REC
18
R
8 L NF
17
R NF
ALC
10
T1/T2
15 19
Q111
Q110
SWITCHING
Q124
L103
SWM3
FOOL PROOF
SWM4
F.A.S
SOLM1
SOLENOID
+B4
SWM5
CAM
VR351
AMIF MPX VCO ADJ
CF351 T352
FM DET
5 6
21 20 13
FM DET VCO
AM IF GND FM+B
7
FM/AM
SWITCHING
+B7
1
VOLTAGE
11 3 4 5 6
REGURATER
17
21
11 10
AUX
L 5
R 16
TAPE
L 4
IC601
R
17
M62439SP
TUNER 3
L
AUDIO PROCESSOR
R
18
CD L 2
R
19
1 9
20
Q121
Q122
MUTING
BAIS
Q126
MONO
15
MO/ST
L 9
R 10
FM/AM
11
Q343
IC704
3
2
+B4
13
8