Sharp CD-BA250 Service Manual page 18

CD-BA250/CD-BA2600
AM
FM
CNP301
BF301
B.P.F
CNP7
FROM CD SECTION
L-CH
TAPE 1
R-CH
PB HEAD
REC
SWITCHING
P.B.
L-CH Q103-
TAPE 2
Q104
R-CH
REC PB HEAD
AC BIAS
BIAS Q111
ERASE
OSC
HEAD
IC301
TA7358AP
FM FRONT END
6
1
9
2 4
3 5 8
7
FM L312
T301
RF
FM
OSC
Q302
AM TRACKING
AM BAND
T303 T306
COVERAGE
IC302
LC72131
PLL(TUNER)
FM
JK690
VIDEO/AUX IN
L AUX
R
BI601
1
2
3
L(T1)
1
13
P.B
24
R(T1)
L(T2)
2
21
R(T2)
23
L NF
3
R NF
22 20
H/N
6
POP REDUCE T1/T2
18
L REC REC
9
16
R REC
17
REF 14
NOR/
10
12
HIGH T1/T2
15 19
SWITCHING
SWITCHING
Q105
Q114
Q106
Q112 Q113
SWITCHING
SWITCHING
Q109
L103
Figure 18 BLOCK DIAGRAM (2/3)
FM IF
T302 CF303
AM IF
1 2
23 21
OSC BUFF
X352
VT
4.5MHZ
1
20 22 15
OSC
+B4
7
+B
FM
Q360
SWITCHING
TAPE
TUNER
CD
+B4
L
4
PB
R
5
L REC
7
R
IC101
L NF
8
AN7345K
R NF
PLAYBACK AND RECORD
ALC
/PLAYBACK AMP.
BIAS
Q110
– 18 –
10.7MHz
X351
450kHz
CF351
456kHz
T351 CF352
4 5 9 8 17 13
L
R
7 18 16 12
IC303
LA1832S
FM IF DET.
FM MPX./
AM IF MPX.
3 4 5 6
16 11
17
9 21
10
+B4
23
L 9 DI
CE
16
R
L
CLK
10 IC601
15
R
LC75341
L
11
AUDIO PROCESSOR
14
R
L
12
13
R
7 8 17 18 3
Q107
Q108
MUTING
–B2
+B4
14
15
1
2
24
–20dB
R
21 ATT
Q601
4 L
Q602
REC/PLA
+B4
8
IC561
1
4
IC562
7
IC561,IC562
KIA4558P
OPE AMP.
T