Sharp CD-BA250 Service Manual page 18

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