Sharp LC-26SH12U - 26" LCD HDTV Service Manual page 47

A B
8
7
FROM/TO POWER1
INV_SW+24V
GND
SW+12V[UNREG]
GND_S
AT+5V
POWER_FAIL
P.CON+5V
SW+5.5V
GND
6 SOUND+B[SW]
1.6A 125V
F404
SW+12V[UNREG]
20N_1600FS
5 1.6A 125V
R495
P.CON+5V
100
SW+12V REG
Q420
KTC3875S_Y_RTK
GND
4
SW+5.5V[EU]
W843 W846
SW+5.5V
1 2 3
5.7 3.9 0
R524
DTV+B2
3
10K
+-1%
GND
2
1.6A 125V
CAUTION
:FOR CONTINUED PROTECTION AGAINST FIRE HAZARD,
REPLACE ONLY WITH THE SAME TYPE FUSE 1.6V 125V(F404).
1
ATTENTION
:POUR UNE PROTECTION CONTINUE LES RISQUES D'INCEIE
N'UTILISER QUE DES FUSIBLE DE MEME TYPE 1.6V 125V(F404).
CAUTION
:F404 IS MANUFACTURED BY SKYGATE CO.,LTD., TYPE 20N.
A B
H-29
C
POWER2 SCHEMATIC DIAGRAM
DAMMY
RESISTANCE
24.8
SWITCH
Q421
KTA1281_Y
0
EV+17V REG
Q422
KTB1151
W830
13.5 12.4
12.8
VIN
1
12.4
13.5
12.8
5.1 5.2
4.5 4.5
SW+12V REG
Q423
KTC3875S_Y_RTK
L405
DC-DC-FET
22uH
Q410 RSS050P03
TSL0808
R471
5.7 1.5
S D
0.047 1/4W
REGULATOR
IC405 5.7 1.5
S D
PQ070XF02SZH C449 R472
0.047 1/4W 5.7 1.5
16V 1000 ZL_P
S D
HDD/RW5V DC/DC CTL
C450
IC406 AL1015 4.0 1.5
0.1 B G D
4
13.9 13.9
1.3
VIN CS
13.1
4.5
V5/PWON EXT
1.2 0
Vref/SS GND
R476_1
R477
1.3 1.3
CC FB
560 1/4W 100 +-1%
+-1%
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
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.
C
D E
(POWER PCB)
24.7
24.8
DAMMY
DAMMY
RESISTANCE
0
RESISTANCE
SWITCH
SWITCH
Q425
0
Q424
KRC102SRTK
0
KRC102SRTK
R481
4.6
100 1/4W
0
W810
LCD+B REG BLOCK
L408 L415
DC/DC(5V)
IC407
47uH1315 22uH
LA5779
TSL0808
VOUT G 2.5V ON/OFF
2 3 4 5
R499
5.1 0 2.5 0
100
R483 R484
6.8K 47
+-1% +-1%
L409
33uH
7313NH
P.CON+5V SW
Q417
KTA1241_Y
5.2 5.2
4.4
0
5.0
P.CON SWITCH
Q418
KRC101S-RTK
0
CAUTION
:SINCE THESE PARTS MARKED BY ARE
CRITICAL FOR SAFETY,USE ONES
DESCRIBED IN PARTS LIST ONLY
D E
F G
CP406
A2001WR2-14P
+24V 1
+24V 2
+24V 3
+24V 4
+24V 5
GND 6
GND 7
GND 8
GND 9
GND 10
NC Analog/Dimming 11
12
ON/OFF
PWM/Dimming 13
NC N.C(open) 14
14PIN
CD403_1
CU2E0601
LIGHT_CTL
LIGHT_POWER_H
SW+12V
LCD+B
CP411 (CP3401)
TWG-P23P-B1
SOUND+B[SW]
SOUND+B 1
SOUND+B 2
GND_S
SOUND GND 3
SOUND GND 4
GND 5
GND 6
GND
GND 7
SW+12V
SW+12V 8
S802X
SW+12V 9
S803X S803Y
LCD+B 10
SYS_POWER_H
SYS_POWER_H 11
LIGHT_CTL
LIGHTE_CTL 12
LIGHT_POWER_H
LIGHT_POWER_H 13
AT+5V
AT+5V 14
AT+5V 15
POWER_FAIL
POWER_FAIL 16
GND 17
GND 18
GND 19
DTV+B2
DTV+B2 20
DTV+B2 21
DTV+B
DTV+B 22
DTV+B 23
LCD+B
S802Y
CAUTION: DIGITAL TRANSISTOR
ATTENTION
:LES PIECES REPAREES PAR UN ETANT
DANGEREUSES AN POINT DE VUE SECURITE
N'UTILISER QUE CELLS DECRITES
DANS LA NOMENCLATURE DES PIECES
F G
H
8
7
6
5
4
3
2
PCB240
1
CEF273
H
H-30