Sharp CD-C452 Service Manual - Page 12
Browse online or download pdf Service Manual for Stereo System Sharp CD-C452. Sharp CD-C452 48 pages.
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CD-C452/C452C
FM&AM LOOP ANT
FM BPF
IC301
FM FRONT END
BF301
1
TA7358AP
2
3
4
5
FM RF
L302
AM TRACKING
CNS11
6
1
FROM CD SECTION
5 2
CNP11
3
5
TAPE 1
PB HEAD
L-CH
SWITCHING
R-CH
Q103
TAPE 2
Q106
REC/PB
REC
HEAD
P.B
L-CH
R-CH
AC BIAS
Q107
Q108
BIAS
OCS
ERASE
HEAD
FM IF
6
T301
9
7
8
FM OSC
L303
Q302
OSC BUFF
AM BAND
COVERAGE
T302
AM ANT.
PLAYBACK&RECORD/
PLAYBACK AMP.
IC101
AN7345K
L (T1)
1
+B4
13
P.B.
R (T1)
24
P.B
L
4
L
L (T2)
2
R
21
R
R (T2)
23
L NF
3
5
4
R NF
20
POP REDUCE
H/N
L
6
T1/T2
REC
7
REC
18
L REC
9
R
16
R REC
8
L NF
17
R NF
ALC
REF
14
10
NOR/
HIGH
T1/T2
12
15
19
SWITCHING
SWITCHING
Q111
Q109
Q110
SWITCHING
SWITCHING
Q128
Q124
L104
Figure 12 BLOCK DIAGRAM (2/3)
+B4
AM IF
CF301
T351
FM IF IN
1
3
AM MIX
24
23
FM OSC
VT
SWITCHING
FM +B
FM
Q344
Q121
REC
Q122
MUTING
T1/T2
BIAS
BIAS
Q126
– 12 –
+B4
VR351
MPX VCO ADJ
T352
FM DET
5
6
21
20
13
15
AM IF
GND
FM+B
FM DET
VCO
MO/ST
FM/AM IF
L
9
IC303
10
R
MPX IN
LA1805
DET OUT
FM/AM
22
7
17
16
11
FM/AM
SWITCHING
Q343
VOLTAGE
X352
REGURATER
4.5MHz
1
3 4 5
6
20
22
15
16
11
OSC
IC302
LC72131
17
PLL CONTROLLER
7
10
21
ST
FM
JK601
VIDEO/AUX
L
R
+B4
8
18
45 44
23 24
CL
34
IC501
CL
38
LV1035M
DATA
35
DOLBY PRO LOGIC
DECORDER
DATA
37
36
ENABLE
42
33
21
31
X501
20
19
18 17 16
IC401
+B4
31
QS7777PF
Q-SOUND
6
MONO/ST
FM
+B4
23
L
AUX
52
60
R
TAPE
L
53
59
R
TUNER
L
54
R
58
CD
L
55
57
R
4
LTIN
C-OUT
9
32
42
C-IN
FLIN
41
FRIN
40