Sharp CD-C452, Service Manual

Page: 12 / 48

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