Read Sharp CD-BA250 (serv.man5) Service Manual online
CD-BA250H/CD-BA2600H
– 20 –
Figure 20 BLOCK DIAGRAM (2/3)
FM OSC
AM LOOP
ANTENNA
ANTENNA
L341
BALUN
SO302
FM
ANTENNA
Q301
IC101
AN7345K
PLAYBACK AND RECORD
/PLAYBACK AMP.
JK690
VIDEO/AUX IN
R
L
R
L
FM
+B
+B4
CLK
+B4
AM IF
CNS601
ATT
–20 dB
Q101~
Q104
Q104
–B2
+B4
IC7
IX040
(2
IC561
IC562
KIA4558P
OPE AMP.
Q107
Q108
Q108
Q603
Q604
Q612
Q613
Q604
Q612
Q613
10.7 MHz
450 kHz
REC/PLAY
CLK
CE
DI
DO
DI
CE
MO/ST
SWITCHING
+B4
FM/AM
IC302
LC72131
PLL(TUNER)
OUT
FM/AM
L
R
BIAS
T1/T2
MUTING
P.B.
REC
AC BIAS
L
L
R
R
R
L
TAPE
TUNER
CD
PB
CNP7
FROM CD SECTION
HEAD
ERASE
SWITCHING
SWITCHING
SWITCHING
BIAS
Q113
Q114
Q112
Q110
SWITCHING
Q109
OSC
BIAS Q111
L103
Q105
Q106
Q106
REC PB HEAD
TAPE 2
PB HEAD
TAPE 1
R-CH
L-CH
R-CH
L-CH
IC601
LC75341
AUDIO PROCESSOR
+B4
R
L
REC
R
L
L NF
R NF
ALC
REF
R REC
L REC
POP REDUCE
R NF
L NF
SWITCHING
L(T2)
R(T2)
R(T1)
L(T1)
R
L
FM/AM
MPXIN
STEREO
AM RF IN
AM OSC IN
FM
Q360
VT
OSC
X352
4.5 MHz
AM BAND
COVERAGE
COVERAGE
AM TRACKING
T303
T306
X351
456 kHz
456 kHz
MO/ST
VCO
DET
FM
FM+B
GND
AM IF
CF351
FM/AM IF MPX.
IC303
LA1832S
FM IF DET./
FM MPX/
AM IF
AM MIX
CF352
T351
CF303
CF301
FE301
TA7358AP
FM FRONT END
24
22 21
4
3
2
6
8
5
7
1
21
7
8
4
1
22
3
4
24
2
1
8
18
17
3
9
10
18
11
16
3
15
10
9
7
23
14
12
13
1
2
20
21
19
7
18
10
8
17
13
4
5
2
24
23
6
9
16
14
12
15
1
5
14
3
4
21
7
9
8
5
17
6
2
1
20
22
11
17
16
15
13
14
12
15
16
23
4
7
H/N
P.B
REC
T1/T2
T1/T2
HIGH
NOR/
16 15 14 13
11 10 9
2 4
3
8
READY
MPXIN
VSSA
VDDA
XOUT
RDCC
RDDA
RST
VDDD
VSSD
XIN
XT21
4.332 MHz
ICT21
LC72723
RDS DECODER
L354
LOW PASS
FILTER
QT21 AMP.
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