Sharp CD-BA300 Service Manual page 18

CD-BA300
AM
FM
CNP301
BF301
B.P.F
FROM CD SECTION
CNP7
TAPE 1 L-CH
R-CH
PB HEAD
SWITCHING
REC
Q103-
P.B.
Q106
L-CH
TAPE 2
R-CH
REC PB HEAD
AC BIAS
ERASE
HEAD
IC301
6
TA7358AP
1
FM FRONT END
9
2 3 4 5 7 8
FM
L312 T301
RF
FM
OSC
OSC BUFF
Q302
AM TRACKING
AM BAND
T303 T306
COVERAGE
CNS11
1
2
3
IC101
PLAYBACK AND RECORD
/PLAYBACK AMP.
L(T1) 1
R(T1)
24
P.B
2
L(T2)
R(T2)
23
L NF 3
R NF
22
H/N
POP REDUCE 6 T1/T2
L REC
9
REC
R REC 16
REF
14
NOR/
12
HIGH T1/T2
15 19
SWITCHING
SWITCHING
Q107
Q111
Q108
Q109
Q110
SWITCHING
SWITCHING
BIAS Q128
L104
OSC
Figure 18 BLOCK DIAGRAM (2/3)
FM IF
CF303
T302
1 2
AM MIX
LA1832S
FM/AM IF MPX.
23
X352
VT
4.5MHZ
20 1 22 15 16
OSC
PLL(TUNER)
+B4
7
+B
FM
FM
Q360
SWITCHING
JK601
VIDEO IN
L
AUX
R
TAPE
TUNER
+B4
13
4
PB
L
R
21
5
20
7
L REC
R
18
L NF
8
17 R NF
ALC
10
BIAS
Q124
Q126
L103
– 18 –
10.7MHz
CF351
X351
450kHz
456kHz
T351 CF352
AM IF
4 5 9 8 17 13
AM IF GND FM+B FM VCO MO/ST
DET
IC303
L
R
FM/AM
OUT MPXIN FM/AM
21 7 18 16 12
11 3 4 5 6
IC302
LC72131
17
FM/AM MO/ST
9
10 21
+B4
23
L 9
R
16
CLK
L 10
IC601
15
R
LC75341
L 11
AUDIO PROCESSOR
R 14
L
12
CD
13
R
7 8 17 18 3
Q121
Q122
MUTING
+B4
14
15
DI 1
CE
2
–20dB
24
ATT
Q603 Q605
R
21
Q606
Q604
L
4
SYSTEM
MUTE
REC/PLAY
+B4
8
IC702
1
–B2
4 IC703
IC70
IX039
IC704
7
KIA4558P
OPE AMP.
T1/T2
BIAS