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Sharp CD-BK260V Service Manual Page 20

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CD-BK260V/CD-BK2700V/CD-BK280V
– 20 –
Figure 20 BLOCK DIAGRAM (2/3)
AM LOOP
ANTENNA
SO302
FM ANTENNA
TERMINAL
FM
ANTENNA
CNP301
JK1
MIC
1
2
IC101
AN7345K
PLAYBACK AND RECORD
/PLAYBACK AMP.
AUX
R
L
R
L
JK690
VIDEO/AUX IN
FM
+B
+B4
CLK
+B4
AM IF
OSC BUFF
FM IF
FM
OSC
B.P.F
CNS601
ATT
–20 dB
Q103-
Q104
–B2
+B4
+B3
+B3
IC561,IC56
2
KIA4558P
OPE AMP.
IC562
IC561
Q107
Q108
Q601
Q602
10.7 MHz
450kHz
REC/P
L
CLK
CE
DI
DO
DI
CE
MO/ST
CONSTANT
VOLTAGE
+B4
FM/AM
IC302
LC72131
PLL(TUNER)
FM/AM
OUT
L
R
MUTING
P.B.
REC
AC BIAS
L
LR
L
R
R
R
L
TAPE
TUNER
CD
PB
CNP11
FROM CD SECTION
HEAD
ERASE
SWITCHING
SWITCHING
SWITCHING
BIAS
Q113
Q114
Q112
Q110
SWITCHING
SOLENOID
DRIVER
MOTOR
DRIVER
TAPE
MECHANISM
ASS'Y
Q109
Q109
OSC
BIAS
Q111
L103
Q105
Q106
Q707
Q708
REC/
PALYBACK HEAD
TAPE 2
PLAYBACK
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
AM TRACKING
T303 T306
Q302
X351
456 kHz
MO/ST
VCO
FM
DET
FM+B
GND
AM IF
CF351
IC303
LA1832S
FM IF DET.
FM MPX./
AM IF MPX.
AM MIX
CF352
T351
RF
FM
OSC
FM
L312 T301
CF303T302
IC301
TA7358AP
FM FRONT END
BF301
21
7
8
4
1
22
3
4
24
2
1
18 178
3
9
10
18
11
16
3
15
10
9
7
23
14
12
13
1
2
20
19
7
18
10
8
17
13
21
4
5
2
24
23
6
9
16
14
12
15
1
5413
8
4
3
2
1
21
7
98517
6
21
21
20 22 11
17
1615
9
6
5
7
13
14
12
15
1623
4
7
H/N
P.B
REC
T1/T2
T1/T2
NOR/
HIGH
L
R
ICK1
M65856SP
MIC AMP.
ICK2
KIA4558P
OPE AMP.
LATCH
MIC IN
VRK1
MIC
VOLUME
CLK
DATA
LOUT
ROUT
L IN
R IN
VCC
+B5
+B4
9
8
7
5
6
2
3
1
12
13
22
23
QK1
32
31
35
36
42
41
40
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