Sharp CD-BA1200H Service Manual page 18

CD-BA1200H
FM
ANTENNA
AM LOOP
ANTANNA
L341
BALUN
AM TRACKING
T303
MOTOR
DRIVER
TAPE
M
Q706
MOTOR
Q704
SOLENOID
Q705
IC701
T2 PLAY
54PIN
IC701
T1 PLAY
53PIN
IC701
R.PLAY
56PIN
IC701
F.PLAY 55PIN
FROMCDSECTION
CNP11
TAPE1 L-CH
PBHEAD R-CH
REC
SWITCHING
P.B.
Q104~
L-CH
TAPE2
Q107
R-CH
RECPBHEAD
ACBIAS
ERASE
HEAD
FE301
1
8 TA7358AP
FM FRONT END
5
4
2 6 7 3
AM BAND
T306
COVERAGE
+2B
+2B
CNS601
1
2
3
IC101
AN7345K
4
PLAYBACKANDRECORD
5
/PLAYBACKAMP.
1
L(T1)
R(T1) 24
P.B
2
L(T2)
R(T2)
23
LNF
3
RNF
22
H/N
POP
T1/T2
6
REDUCE
9
LREC
REC
RREC 16
14
REF
12
NOR/
HIGH T1/T2
15
19
12
SWITCHING
Q108
Q109 Q103
SWITCHING
Q101 Q102
SWITCHING
Q114
L104
BIAS
OSC
Figure 18 BLOCK DIAGRAM (2/3)
CF301 Q301 CF302
1
AM
FM IF DET./FM MPX./AM IF
23
X352
VT
4.5MHZ
22
20 1
OSC
7
SWITCHING
FM +B FM
Q360
+B3
+B3
13
L
4
PB
21 R
5
20
7 L REC
18
R
8 LNF
17
RNF
ALC
10
BIAS
Q112
Q113
L103
SWITCHING
– 18 –
CF351
T351 CF352
AM IF
2 4 5 9 8 17
IC303
MIX AM IF FM+B FM
GND VCO
LA1832S DET
FM/AM
OUT MPXIN FM/AM
22 21 24 18
7 16
15 4
16 11 3
5 6
IC302
LC72131
17
PLL(TUNER)
FM/AM MO/ST
9 10 2 1
+B3
23
9
16
L 10
TAPE
IC601
R
15
LC75341
TUNER L 1
AUDIOPROCESSOR
R
14
L 12
CD
R
13
18
7 8 17 3
+B3
X351
456kHz
Q
13
MO/ST
L 14
R
15
12
1
DI
CE
2
CL
24
R
21
Q601
Q602
L
4
SYSTEM
MUTE
Q110 REC/PLAY
Q111
MUTING
T1/T2
BAIS