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Model
CD-BA1200 (serv.man8)
Pages
10
Size
615.97 KB
Type
PDF
Document
Service Manual
Brand
Device
Audio / System / Part 3 - Schematic Diagrams
File
cd-ba1200-sm8.pdf
Date
PREV: Sharp CD-BA1200 (serv.man7) Service Manual

Sharp CD-BA1200 (serv.man8) Service Manual ▷ View online

CD-BA1200H
– 28 –
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 15.
Figure 28 SCHEMATIC DIAGRAM (9/10)
24
23
22
21
3
2
1
22 21 20
19 18
6
5
4
3
2
1
8
7
6
5
4
3
2
1
AM LOOP
ANTENNA
F  OUT
IF  OUT
VCC
VT
GND
GND
GND
ANT
VSS
AOUT
AIN
PD
DO
CL
DI
CE
X  IN
REG
AM  RF  IN
AM  OSC  IN
FM  AFC
AM  OSC  OUT
AM  MIX  OUT
FM  IF  IN
1
2
1
2
X  OUT
1
2
3
1
3
2
+B
+B
+B
+B
AM ANT.
AM OSC.
AM TRACKING fL
AM BAND
COVERAGE fL
AM IF
C331
0.047
VD301
SVC348S 
C302
0.001
C330
15P
(UJ)
C332
0.022
D302
1SS133
D301
1SS133
T306
CNP302
T303
C323
0.022 
C335
560P
L341
BALUN
R336
10K
C334
27P(UJ)
R323
68K
C342
0.022
R358
3.9K
C362
3.3/50
C361
0.022 
C363
 
0.022
C350
0.022 
C352
10/16
T351
R351
5.6K
CF302 
R378
1K
R382
150
C381
12P(CH)
R380
1.5K
C393
1/50
R379
22
K
C380
IC302
LC72131
IC302: PLL(TUNER)
R372
1K
X352
4.5MHz
R381
10K 
C382
15P(CH)
C397
0.022
C394
47/16 
C392
0.001
R374
1K
R373
1K
C301
0.022
D303
1SS133
D304
1SS133
SO301
FM ANTENNA
TERMINAL
C345
0.022
CF301
C346
0.022 
C347
0.022 
R345 4.7K
R344
470 
C321
100/16
FE301
FM  FRONT END
Q301
2SC380-O
R349
33
R348
680
R347
6.8K
R346
330
R369
15
L342
2.2mH
C341
0.022
– 29 –
CD-BA1200H
7
8
9
10
11
12
Figure 29 SCHEMATIC DIAGRAM (10/10)
24
23
22
21
20 19 18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
22 21 20
19 18
17 16 15
14 13 12
11
10
9
8
7
6
5
4
3
2
1
A  GND 
D  GND 
IF
CONT
FM/AM 
FM/AM
SD
CLK 
DO
TP
CE
DI
MO/ST
ST  IND
MO/ST 
SM
A+12V 
L 
R 
VSS
AOUT
AIN
PD
VDD
FM  IN
DO
CL
DI
CE
X  IN
IF  IN
REG
AM  IF  IN
GND 
SD
STEREO
FM  DET
VCC
IF  OUT
PHASE
PHASE
(FM/AM)
L-CH  OUT
R-CH  OUT
MPX  IN
MPX  VCO
FM/AM  OUT
VSM
AM  LOW  CUT
AM  RF  IN
AM  OSC  IN
FM  AFC
AM  OSC  OUT
AM  MIX  OUT
FM  IF  IN
X  OUT
AM  IN
1
3
2
MAIN PWB-A1(3/3)
1
2
3
4
5
6
7
8
9
10
P23  12 - B
TO MAIN SECTION
FM SIGNAL 
AM SIGNAL 
B
+B
+B
+B
+B
+B
+B
+B
+B
AM IF
SWITCHING
C342
0.022
R358
3.9K
C362
3.3/50
C361
0.022 
X351
456kHz
C368
1/50
R350
2.7K
C367
1/50
C365
 
0.022
C364 10/16
C363
 
0.022
L354
LOW PASS
FILTER
IC303
LA1832S
FM IF DET./FM MPX./AM IF
C373
0.018
C374
0.018
C369
27P(UJ)
R356
1K
R357
470K
R364
15K
C372
1/50
R362
1.2K
C371
1/50
R361
1.2K
R363
15K
R392
270 
Q360
KTA1266GR
R391
270
C395 0.022
C396 100/10
ZD351
DZ5.1BSB
L352
100
µ
H 
R393
1K
C370
1/50
R387
5.6K
R355
3.3K
C358
1/50
C357
2.2/50
C355
22P
C356
0.001
C398
100/10
C399
0.022
C354
0.022 
CF351 
R353
270
C350
0.022 
C352
10/16
R352
1K
CF352 
T351
C353
0.022 
R351
5.6K
R386
22K
C385
0.01
L351
100
µ
H 
R377
47K 
R360
4.7K
C386
330P
R395
47K
R384
5.6K
C391
47/16
R383
5.6K
R385
5.6K
R376
1K
R359
1.8K
R370
1K
C387
0.022
R378
1K
82
50
R380
1.5K
C393
1/50
R379
2.2K
C380
10/16
IC302
LC72131
LL(TUNER)
R372
1K
4
.5MH
z
R381
10K 
C397
0.022
C394
47/16 
C392
0.001
R374
1K
R373
1K
C388
0.001
R388
3.9K
– 29 –
CD-BA1200H
7
8
9
10
11
12
Figure 29 SCHEMATIC DIAGRAM (10/10)
24
23
22
21
20 19 18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
22 21 20
19 18
17 16 15
14 13 12
11
10
9
8
7
6
5
4
3
2
1
A  GND 
D  GND 
IF
CONT
FM/AM 
FM/AM
SD
CLK 
DO
TP
CE
DI
MO/ST
ST  IND
MO/ST 
SM
A+12V 
L 
R 
VSS
AOUT
AIN
PD
VDD
FM  IN
DO
CL
DI
CE
X  IN
IF  IN
REG
AM  IF  IN
GND 
SD
STEREO
FM  DET
VCC
IF  OUT
PHASE
PHASE
(FM/AM)
L-CH  OUT
R-CH  OUT
MPX  IN
MPX  VCO
FM/AM  OUT
VSM
AM  LOW  CUT
AM  RF  IN
AM  OSC  IN
FM  AFC
AM  OSC  OUT
AM  MIX  OUT
FM  IF  IN
X  OUT
AM  IN
1
3
2
MAIN PWB-A1(3/3)
1
2
3
4
5
6
7
8
9
10
P23  12 - B
TO MAIN SECTION
FM SIGNAL 
AM SIGNAL 
B
+B
+B
+B
+B
+B
+B
+B
+B
AM IF
SWITCHING
C342
0.022
R358
3.9K
C362
3.3/50
C361
0.022 
X351
456kHz
C368
1/50
R350
2.7K
C367
1/50
C365
 
0.022
C364 10/16
C363
 
0.022
L354
LOW PASS
FILTER
IC303
LA1832S
FM IF DET./FM MPX./AM IF
C373
0.018
C374
0.018
C369
27P(UJ)
R356
1K
R357
470K
R364
15K
C372
1/50
R362
1.2K
C371
1/50
R361
1.2K
R363
15K
R392
270 
Q360
KTA1266GR
R391
270
C395 0.022
C396 100/10
ZD351
DZ5.1BSB
L352
100
µ
H 
R393
1K
C370
1/50
R387
5.6K
R355
3.3K
C358
1/50
C357
2.2/50
C355
22P
C356
0.001
C398
100/10
C399
0.022
C354
0.022 
CF351 
R353
270
C350
0.022 
C352
10/16
R352
1K
CF352 
T351
C353
0.022 
R351
5.6K
R386
22K
C385
0.01
L351
100
µ
H 
R377
47K 
R360
4.7K
C386
330P
R395
47K
R384
5.6K
C391
47/16
R383
5.6K
R385
5.6K
R376
1K
R359
1.8K
R370
1K
C387
0.022
R378
1K
82
50
R380
1.5K
C393
1/50
R379
2.2K
C380
10/16
IC302
LC72131
LL(TUNER)
R372
1K
4
.5MH
z
R381
10K 
C397
0.022
C394
47/16 
C392
0.001
R374
1K
R373
1K
C388
0.001
R388
3.9K
– 29 –
CD-BA1200H
7
8
9
10
11
12
Figure 29 SCHEMATIC DIAGRAM (10/10)
24
23
22
21
20 19 18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
22 21 20
19 18
17 16 15
14 13 12
11
10
9
8
7
6
5
4
3
2
1
A  GND 
D  GND 
IF
CONT
FM/AM 
FM/AM
SD
CLK 
DO
TP
CE
DI
MO/ST
ST  IND
MO/ST 
SM
A+12V 
L 
R 
VSS
AOUT
AIN
PD
VDD
FM  IN
DO
CL
DI
CE
X  IN
IF  IN
REG
AM  IF  IN
GND 
SD
STEREO
FM  DET
VCC
IF  OUT
PHASE
PHASE
(FM/AM)
L-CH  OUT
R-CH  OUT
MPX  IN
MPX  VCO
FM/AM  OUT
VSM
AM  LOW  CUT
AM  RF  IN
AM  OSC  IN
FM  AFC
AM  OSC  OUT
AM  MIX  OUT
FM  IF  IN
X  OUT
AM  IN
1
3
2
MAIN PWB-A1(3/3)
1
2
3
4
5
6
7
8
9
10
P23  12 - B
TO MAIN SECTION
FM SIGNAL 
AM SIGNAL 
B
+B
+B
+B
+B
+B
+B
+B
+B
AM IF
SWITCHING
C342
0.022
R358
3.9K
C362
3.3/50
C361
0.022 
X351
456kHz
C368
1/50
R350
2.7K
C367
1/50
C365
 
0.022
C364 10/16
C363
 
0.022
L354
LOW PASS
FILTER
IC303
LA1832S
FM IF DET./FM MPX./AM IF
C373
0.018
C374
0.018
C369
27P(UJ)
R356
1K
R357
470K
R364
15K
C372
1/50
R362
1.2K
C371
1/50
R361
1.2K
R363
15K
R392
270 
Q360
KTA1266GR
R391
270
C395 0.022
C396 100/10
ZD351
DZ5.1BSB
L352
100
µ
H 
R393
1K
C370
1/50
R387
5.6K
R355
3.3K
C358
1/50
C357
2.2/50
C355
22P
C356
0.001
C398
100/10
C399
0.022
C354
0.022 
CF351 
R353
270
C350
0.022 
C352
10/16
R352
1K
CF352 
T351
C353
0.022 
R351
5.6K
R386
22K
C385
0.01
L351
100
µ
H 
R377
47K 
R360
4.7K
C386
330P
R395
47K
R384
5.6K
C391
47/16
R383
5.6K
R385
5.6K
R376
1K
R359
1.8K
R370
1K
C387
0.022
R378
1K
82
50
R380
1.5K
C393
1/50
R379
2.2K
C380
10/16
IC302
LC72131
LL(TUNER)
R372
1K
4
.5MH
z
R381
10K 
C397
0.022
C394
47/16 
C392
0.001
R374
1K
R373
1K
C388
0.001
R388
3.9K
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