Sharp CD-XP120W - Karaoke Function; Playing Karaoke

CD-XP120W
– 22 –
Figure 22 SCHEMATIC DIAGRAM (5/10)
A
B
C
D
E
F
G
H
1
23456
• NOTES ON SCHEMATIC DIAGRAM can be found on page 13.
(0V)
4.7V
(0V)
2.3V
1.3V
1.3V
2.1V
4V
(2.2V)
(2.7V)
(2.7V)
0.6V
(0.9V)
2.3V
0V
5V
2.5V
2.1V
2.1V
(1.2V)
3.8V
(1.9V)
3.8V
(4.3V)
2.9V
0V
0V
5V
5V
5V
5V
2.1V
10.9V
10.8V
11.7V
3.9V
(0V)
(0V)
3.5V
3.7V
(11.4V)
1.7V
5.1V
4.8V
0.1V
0.1V
2.6V
0V
0.9V
0.9V
5.2V
2.6V
(2.6V)
2.6V
0V
0V
(0V)
3.8V
4.4V
0V
5.2V
5.2V
5.2V
1.5V
1.5V
0.8V
2.1V
21
21
22
21
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
21
22
23
24
1
2
3
4
5
6
7
8
9
1
2
3
P18 1 - C
TO
MAIN PWB
FM
GND
AM
PD
VT
FM
FM
MUTE
VSM
AM RF
(AM/FM)
PHASE
PHASE
IF OUT
VCC
FM DET
STEREO
SD
GND
AM IF
REG
AM MIX
OUT
OUT
OUT
OUT
OUT
IN
IN
IN
IN
CUT
AM LOW
FM/AM
MPX VCO
MPX IN
MO/ST
L-CH
R-CH
FM IF
FM AFC
AM OSC
AM OSC
CE
DI
CL
DO
MO/ST
IF REQ
IF IN
AM IN
FM IN
VDD
AIN
AOUT
VSS
X OUT
X IN
AM OSC.
AM ANTENNA
SD
FM ST
DO
CL
CE
DI
A_12V
D_GND
TUN_L
TUN_R
A_GND
11
10
9
8
7
6
5
4
3
2
1
MAIN PWB-A1(3/3)
10
1
3
2
AM LOOP
ANTENNA
FM RF
FM IF
OSC BUFF
FM OSC.
FM BAND COVERAGE fL
1
3
2
AM BAND COVERAGE fL
AM TRACKING fL
FM MUTE
LEVEL
1
2
3
AM IF
1
3
2
SWITCHING
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
SO301
FM ANTENNA
TERMINAL
IC303
LA1832S
R364
3.3K
R363
3.3K
Q351
KRC104 M
C373
0.022
C374
0.022
R357
470K
C369
56P
R362
12K
R356
1K
C368
1/50
R361
12K
X351
456 kHz
C371
1/50
C372
1/50
R350
2.7K
C367
1/50
C360
0.022
C362
3.3/50
C361
0.022
C343
33P
R358
8.2K
C365
0.022
C364
10/16
C363
0.022
C366
0.001
L353
1mH
VR351
10K(B)
R336
5.6K
R351
5.6K
CF352
T351
CF302
C378
330P
C344
33P
R376
10K
C355
22P
C370
1/50
C356
0.001
C399
0.022
C358
1/50
C357
2.2/50
R355
3.3K
CF351
C354
0.022
C353
0.022
R352
1K
C352
10/16
C350
0.022
R353
270
C351
0.022
C398
100/10
ZD351
DZ5.1BSB
R392
390
R391
390
C396
100/10
C395
0.022
L352
100µH
R387
5.6K
C383
0.022
R395
47K
L351
100µH
R393
1K
R377
5.6K
R385
5.6K
Q360
KSA1015 GR
R384
6.8K
C391
47/16
R383
5.6K
R371
1K
R372
1K
R373
1K
R374
1K
C384
0.001
C382
15P
(CH)
C381
12P
(CH)
X352
4.5 MHz
R365
10K
C386
330P
C385
0.01
R379
2.2K
R380
1.5K
C392
0.001
C393
1/50
R381
10K
R386
330
C397
0.022
C394
47/16
R382
330
C387
0.022
C380
10/16
R309
470
IC302
LC72131
PLL(TUNER)
Q306
SSC1674 C
R312
2.2K
R316
330
R314
33
R313
680
C321
0.0033
C316
10/16
R308
10K
C317
0.022
R305
680
C315
100P
R315
33
Q302
SSC1674 C
R304
47K
C311
10P(CH)
C314
22P(CH)
L303
C313
6P
(UJ)
VD302
KDV147B
CF303
R306
33
C312
33P
R307
47
T304
VD303
KDV147B
R303
33K
R302
100K
C318
5P
C319
18P(CH)
BF301
B.P.F
C302
0.001
D302
1N4148
D301
1N4148
T302
C329
0.022
C337
0.022
T306
C335
560P
C334
27P(UJ)
R323
68K
C330
12P(CH)
C332
0.022
C331
0.047
VD301
SVC348S
IC301
TA7358AP
FM FRONT END
C303
0.001
D307
1N4148
D305
1N4148
C304
0.01
C320
0.001
D306
1N4148
C306
9P(UJ)
L302
R301
22
C309
0.001
C308
0.022
C307
0.0047
C305
0.0047
CNP301
C349
0.001
C301
0.012
R310
4.7K
D308
1N4148
R360
4.7K
R359
1.8K
R366
2.2K
IC303
LA1832S
FM IF DET./
FM MPX./AM IF
FM SIGNAL
AM SIGNAL