Sharp LC-20SD5E Service Manual page 45

A B
8
7
6
FROM/TO SCALER
C321_1
SP_AUDIO_OUT_R
50V 4.7 KANP_P
C322_1
SP_AUDIO_OUT_L
50V 4.7 KANP_P
5
AUDIO_MUTE
FROM/TO POWER1
4
SOUND+B
SOUND_GND
AT+3.3V
POWER_FAIL
GND
FROM/TO SCALER
REMOCON
EPG_LED
STANDBY_LED
3
FROM/TO REGULATOR
P.CON+5V
AT+5V
2
CAUTION ATTENTION
1 :SINCE THESE PARTS MARKED BY ARE
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
A B
H-9
C
SOUND AMP SCHEMATIC DIAGRAM
SOUND AMP
IC302 LA42052-E
1 2 3
6.8 2.2
0
W867
C315 C316
0.0047 0.0047
B
R310
6.8K
R316
1K
12
R314
1K
13
0
R305 MUTE
0.8
Q302
MUTE SW.
8.2K KTC3875S_Y_RTK
0
Q301
2.9
KTC3875S_Y_RTK
R306 0
R307
0.8
0
47K
MUTE
8.2K
0
0
Q303
KTC3875S_Y_RTK
W879
SW 3.0
Q300
KRA102SRTK
0
W878
3.3
SW
0
R300 Q304
4.5
KTA1504S_Y_RTK
1K
0
R4327
330
SW
3.5 SW
Q4305
Q4308
KRA102SRTK
KRA102SRTK
3.3
0
5.0
3.3
SW
Q4309
3.3
KRC102SRTK
0
:LES PIECES REPAREES PAR UN ETANT NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
DANGEREUSES AN POINT DE VUE SECURITE OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
C
D E
(MAIN PCB)
4 5 6 7 8 9 10 11 12 13
0
2.2 0 14.0
9.7 14.0 14.0
R318 3.9K
3.9K
3.9K R332
R320
R329 3.9K 4.7K
R319
4.7K
R321
4.7K 4.7K
R330 R331
W868
B
HS301
763WAA0370
R4335 B4318
B4307 HCB1608KF-181T20
330
HCB1608KF-181T20 B4309
HCB1608KF-181T20
5.3
D4305
B4306
0
HCB1608KF-181T20 MA111
0
SW
Q4310
3.3
KRC102SRTK
0
NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
D E
F G
FINAL LINE S/SKD
FROM/TO AV JACK/SWITCH
SP301
CD302 (CP302) YDP3085-10RN
CU144401 SPEAKER
1
(L)
2
8 OHM 5W
3
4
SP302
YDP3085-10RN
SPEAKER
FROM/TO AV JACK/SWITCH
SOUND_GND
SOUND_L
SOUND_R
FROM/TO OPERATION/REMOCON
(CP2201) CP4301
A2001WV2-6P
POWER ON LED 1
STANDBY LED 2
AT+5V 3
GND 4
REMOCON IN 5
GND 6
CAUTION: DIGITAL TRANSISTOR
W887
CAUTION: DIGITAL TRANSISTOR
F G
H
8
7
6
5
4
3
2
PCBF40
CMG114
1
H
H-10