Read Sharp CD-C423H (serv.man4) Service Manual online
CD-C423H
– 36 –
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Figure 36 SCHEMATIC DIAGRAM (10/10)
• NOTES ON SCHEMATIC DIAGRAM can be found on page 16.
(UJ)
12
11
10
98
765
432
1
2
1
2
1
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
7
6
5
4
3
2
18
87
65
43
2
1
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
+B
PLL(TUNER)
(0V)
(0V)
9.4V
0.8V
0V
2.6V (0V)
(0V)
2V (0V)
5.2V
(3.6V)
0V
(0V)
3.9V
0V
(12.1V)
11.3V
(0V)
11.3V
12.1V
(0V)
(0V)
0.7V
0.7V
0V
0V
0V
0V
RDS
DECORDER
VREF
SYR
CE
DI
CL
DO
RDS-ID
SYNC
VDDD
VSSD
XIN
XOUT
FLOUT
VSSA
MPXIN
CIN
T1
T2
VDDA
X IN
X OUT
VSS
AOUT
AIN
PD
VDD
FM IN
MW
AM IN
FM
MO/ST
ST IND
IF IN
CE
DI
CL
DO
FM
AM SIGNAL
FM SIGNAL
TO MAIN PWB(1/3)
P28 6-A
CNP303
SD
SM
R
L
TUN MUTE
A GND
A+12V
DI
CE
DO
CLK
D GND
3
2
1
(CH)
(CH)
FM MUTE LEVEL
AM IF
3
2
1
FM IF DET/
FM MPX/AM IF
FM
DET
FM IF
IN
AM MIX
OUT
AM OSC
IN
AM OSC
OUT
REG
FM
AFC
AM RF
IN
VSM
CUT
AM LOW
STEREO
SD
GND
AM IF
IN
OUT
FM/AM
VCC
IF OUT
PHASE
PHASE
(FM/AM)
MO/ST
R-CH
OUT
MPX
IN
MPX
VCO
L-CH
OUT
(CH)
TP
TP
TP
(CH)
MUTING
MUTING
MPX PHASE
FM IF AMP.
AM ANT.
AM OSC.
3
2
1
(CH)
AM LOOP ANTENNA
FM
75ohms
ANTENNA
TERMINAL
3
2
1
FM FRONTEND
IF OUT
GND
F OUT
VT
VCC
GND
GND
ANT
TP302
TP301
LOW PASS
FILTER
R369
82
Q371
KTA1266 GR
D351
1SS133
R385 5.6K
C391 47/16
R384
5.6K
D352
1SS133
R382 150
C380
10/16
R376 1K
R378
82K
C386 330P
CNS303
R373
1K
R372
1K
R374
1K
R371
1K
C350 0.022
C352
10/16
C351
0.022
R351 5.6K
R354 3.9K
C399
0.022
C353
0.022
C354
0.022
R393 1K
C358 1/50
ZDT351
MTZJ5.1B
RT49 390
RT48 390
CT43
10/16
RT21
100K
RT26
1K
RT28 1K
RT30
1K
LT22 2.2
µ
H
RT37 220K
RT36 220K
C364 10/16
C366 0.001
C365 0.022
C363 0.022
R356
1K
C369 27P
C373
0.033
C374 0.033
R357
470K
R364
1.2K
C343 33P
VR351 10K(B)
D301 1SS133
CNP301
R349
33
R344
470
R345 4.7K
R301
330
C346
0.022
C345
0.022
C321
100/16
R379 2.2K
C382 15P
C381 12P
X352
4.5MHz
C385 0.01
R377
47K
L351 100
µ
H
R363 1.2K
R366 10K
R368 33K
R365 10K
C375 3.3/50
R367
1K
Q353 KTC3199 GR
Q354
KTC3199 GR
X351
456KHz
C368
1/50
R358 8.2K
C342 0.022
R353 270
IC303 LA1832
L352 100
µ
H
CT23
10/16
ICT21
LC72720
C355 22P
C370
1/50
ZDT21
MTZJ5.1B
C357
2.2/50
R355
3.3K
C356 0.001
CF351
C398
100/10
C361 0.022
D304 1SS133
C301 0.001
D303 1SS133
L341 BALUN
RT32
10K
RT33
56K
QT21
KTC3199 GR
CT37
0.022
RT34 56K
C362
3.3/50
R362
1.2K
C372 1/50
R361
1.2K
C371 1/50
C393 1/50
R380 1.5K
R381
10K
C394 47/16
SO301
C387
0.022
C392 0.001
D353
1SS133
R395 47K
R359
1.8K
R360
4.7K
C396
100/10
C395
0.022
Q360
KTA1266 GR
R383 5.6K
R392
390
R391 390
L353 1mH
C397 0.022
R346
330
R347
6.8K
C341 0.022
R348
680
FE301
CF301
Q301 2SC380 O
C347
0.022
C334
18P(UJ)
R336
4.7K
R324
100K
T306
C336 470P
C335
18P
VD301-2
KV1236Z23F
R323
68K
C384
0.001
CF302
C323 0.022
C330
10P
T302
C332 0.022
R319
100K
C331
0.047
VD301-1
KV1236Z23F
D302 1SS133
R352
1K
CF352
T351
C337
0.022
IC302
LC72131
C338 0.001
CHASSIS
GND
CHASSIS
GND
CT24
0.022
CT25 560P
XT21
4.332MHz
CT26 22P
CT29 0.022
CT28 47/10
RT29
1K
LT21
2.2
µ
H
CT21 47/10
CT22
0.022
CT36
0.022
R387 22K
Q361
KRC107 M
ZD352 MTZJ3.9B
CT27
22P
C367 1/50
R350 2.7K
RT35 220K
R370
1K
L342
2.2mH
L354
TUNER PWB-C
