Sharp CD-BK260V Service Manual page 20

Video cd mini system
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CD-BK260V/CD-BK2700V/CD-BK280V
ANTENNA
ICK1
M65856SP
JK1
MIC AMP.
MIC
LATCH
CLK
DATA
MIC IN
LOUT
9
ROUT
12
L IN
13
R IN
22
VCC
+B5
VRK1
QK1
MIC
VOLUME
PLAYBACK
HEAD
TAPE 1
REC/
PALYBACK HEAD
TAPE 2
FM
SO302
TA7358AP
FM ANTENNA
FM FRONT END
TERMINAL
BF301
1
B.P.F
2
FM L312
AM LOOP
RF
ANTENNA
CNP301
AM TRACKING
1
2
T303
40
41
42
36
35
8
31
5
32
6
L
23
7
1
R
2
3
ICK2
KIA4558P
OPE AMP.
FROM CD SECTION
L(T1)
L-CH
R(T1)
R-CH
L(T2)
REC
R(T2)
SWITCHING
P.B.
L-CH
Q103-
L NF
Q104
R-CH
R NF
POP REDUCE
AC BIAS
L REC
R REC
REF
SWITCHING
Q105
Q106
BIAS Q111
ERASE
L103
OSC
HEAD
Figure 20 BLOCK DIAGRAM (2/3)
IC301
FM IF
6
T302
CF303
9
4
5
3
7
8
T301
FM
OSC
OSC BUFF
Q302
AM BAND
T306
COVERAGE
VT
IC302
LC72131
20
PLL(TUNER)
+B4
+B
FM
FM
Q360
CONSTANT
VOLTAGE
JK690
VIDEO/AUX IN
R
AUX
L
CNS601
1
CNP11
2
3
+B4
1
13
P.B
24
L
4
PB
2
21
R
23
3
5
20
22
H/N
L
REC
6
7
T1/T2
18
R
REC
9
IC101
L NF
16
8
AN7345K
R NF
17
14
PLAYBACK AND RECORD
NOR/
10
ALC
12
/PLAYBACK AMP.
HIGH
T1/T2
19
15
SWITCHING
Q114
Q112
Q113
BIAS
SWITCHING
Q110
Q109
SWITCHING
– 20 –
10.7 MHz
450kHz
CF351
T351
CF352
AM IF
1
2
4
5
9 8
23
21
7
18
16
IC303
LA1832S
FM IF DET.
FM MPX./
AM IF MPX.
X352
4.5 MHZ
1
3
4
5
6
22
15
16
11
OSC
9
21
7
10
L
9
R
16
L
10
TAPE
IC601
15
R
LC75341
L
11
TUNER
AUDIO PROCESSOR
14
R
L
12
CD
13
L R
R
7
18
8
17
MOTOR
DRIVER
+B3
Q109
TAPE
MECHANISM
Q707
ASS'Y
+B3
Q708
SOLENOID
DRIVER
+B4
X351
456 kHz
17
13
14
L
R
15
12
17
+B4
23
1
DI
2
CE
CLK
24
–20 dB
R
ATT
21
Q601
4
L
Q602
3
REC/PL
Q107
Q108
+B4
MUTING
8
IC561
1
4
IC562
7
–B2
IC561,IC562
KIA4558P
OPE AMP.

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Cd-bk2700vCd-bk280v

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