CD-BA1500 (serv.man7). Part 2 - Notes on diagrams, Block diagrams, Schematic diagrams - Sharp Audio Service Manual (repair manual). Page 3

Read Sharp CD-BA1500 (serv.man7) Service Manual online

CD-BA1500H
– 22 –
 Figure 22 BLOCK DIAGRAM (2/3)
REC/PLAY
CL
CE
DI
SYSTEM
MUTE
Q401
Q402
DO
CL
DI
CE
MO/ST
SWITCHING 
+B2
FM/AM
IC302
LC72131
PLL(TUNER)
FM/AM
OUT 
+B2
L
R
BIAS
T1/T2 
MUTING
Q110
Q111
P.B.
REC
AC  BIAS
R 
L 
SO401
VIDEO/AUX
L 
L 
R 
R 
R 
L 
R 
L 
AUX 
TAPE
TUNER 
CD
PB
CNS402
FROM
CD SECTION
CNP11
ERASE
HEAD
SWITCHING 
SWITCHING 
SWITCHING 
BIAS
Q102
Q103
Q101
Q113
SWITCHING 
Q112
L103
OSC
BIAS
Q114
L104
Q108
Q109
REC  PLAYBACK 
 HEAD 
TAPE  2
PLAYBACK  HEAD
TAPE  1
R-CH
L-CH
R-CH
L-CH
IC401
LC75341
AUDIO  PROCESSOR
H/N 
P.B 
+B2
R
L
R
L REC
L  NF
R  NF
ALC
REC
T1/T2 
T1/T2
NOR/
HIGH
REF
R  REC
L  REC
POP
REDUCE
R  NF
L  NF
SWITCHING 
Q104~
Q107
L(T2)
R(T2)
R(T1)
L(T1)
IC101
AN7345K
PLAYBACK  AND  RECORD
/PLAYBACK  AMP.
R
L
FM/AM
MPXIN
STEREO
AM  RF  IN
AM  OSC  IN 
FM
Q360
VT
FM  OSC
OSC 
X352
4.5MHZ
AM  BAND
COVERAGE
AM  TRACKING
T303
X351
456KHz
MO/ST
VCO
FM
DET
VCC
GND 
AM  IF 
CF351
AM IF
IC303
LA1832S
FM/AM IF MPX.
AM  MIX
CF352
T351
CF301
FE301
FM  FRONT  END
22
3
21
4 
24
2 
1 
8 
18
17
5
4
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 
5
14
3
8
4
3
2
21
7
9
8
5
6
21
2
1
20
22
11
17
16
15
5
6
7
13
14
12
15
16
23
4
7
FM
+B
4
T306
17
AM LOOP ANT
SO301
ANTENNA
TERMINAL
L341
BALUN
24
1
VSSD
VDDD
XIN
XOUT
VSSA
VDDA
MPX
IN
DO
CL
DI
CE
XT21
4.332MHz
ICT21
LC72720
RDS DECORDER
4
2
3
23 22 21 20
15
14
13
12
L354
@
CF302
Q301
3
3
1
1
1
2
1
2
CNP302
LOW PASS
FILTER
3
1
R
L
+B2
VCC
+5.1V
VDD

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