Sharp LC-20S5E-BK Service Manual page 38

A B
8
7
6
FROM/TO SCALER
C321
SP_AUDIO_OUT_R
25V 10 KA
C322
SP_AUDIO_OUT_L
25V 10 KA
5
AUDIO_MUTE
W879
FROM/TO POWER
SOUND+B
SOUND_GND
P.CON+5V
AT+5V
W878
4
AT+3.3V
POWER_FAIL
FROM/TO SCALER
REMOCON
SYS_POWER_H
STANDBY_LED
3
2
FROM/TO POWER
GND
CAUTION
:SINCE THESE PARTS MARKED BY ARE
1
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
A B
H-9
C
SOUND AMP/LED_I/F SCHEMATIC DIAGRAM
IC302 LA42052-E
1 2 3
6.8 2.2
0
W867
C315 C316
0.0047 0.0047
B
R310
6.8K
R316
1K
19
R314
1K
20
R305
Q302
MUTE SW.
33K KTC3875S_Y_RTK
Q301
2.9
KTC3875S_Y_RTK
R306
R307
Q303
0
47K1/4W
33K KTC3875S_Y_RTK
0
Q300
KRA102SRTK
Q304
KTA1504S_Y_RTK
R300
1K
R4327
3301/4W
SW
3.5 SW
Q4305
Q4308
KRA102SRTK
KRA102SRTK
3.3
0
3.3
SW
Q4309
3.3
KRC102SRTK
0
ATTENTION
:LES PIECES REPAREES PAR UN ETANT
DANGEREUSES AN POINT DE VUE SECURITE
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 0
2.2 0 0 14.0 0
9.7 14.0 14.0
R318
1.8K 1/4W
R320
1.8K 1/4W R319
R321 2.2K 1/4W
2.2K 1/4W
W868
B
HS301
763WAA0362
R4335 B4318
B4307 HCB1608KF-181T20
330 1/4W
HCB1608KF-181T20 B4309
HCB1608KF-181T20
D4305
B4306
HCB1608KF-181T20 MA111
SW
Q4310
KRC102SRTK
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME NOTE:THE DC VOLTAGE AT EACH PART WAS MEASURED
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
D E
F G
FROM/TO AV JACK/SWITCH SCHEMATIC
SOUND_GND
SOUND_L
SOUND_R
CP4301
A2001WV2-6P
REMOCON PCB
POWER ON LED 1
STANDBY LED 2
CD4302
AT+5V 3
CU262301
GND 4
REMOCON IN 5
GND 6
W887
WITH THE DIGITAL TESTER WHEN THE COLOR BROADCAST
WAS RECEIVED IN GOOD CONDITION AND PICTURE IS NORMAL.
F G
H
8
FINAL LINE S/SKD
7
CD302
CU143802
1
2
3
4
6
5
4
3
2
1
PCBF40
CMF102
H
H-10