Sharp LC-26SH12U Service Manual - Page 47

A B C D E F G POWER2 SCHEMATIC DIAGRAM 8 (POWER PCB) R478 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] R494 680 2W R473 680 2W R475 680 2W R466 150 5W 2.2K 1/2W 22K DAMMY RESISTANCE SWITCH 24.8 Q421 KTA1281_Y 24.7 0 R479 24.8 DAMMY RESISTANCE 0 SWITCH Q424 0 KRC102SRTK R480 10K 1/4W DAMMY RESISTANCE SWITCH Q425 0 KRC102SRTK R481 4.6 0 100 1/4W W810 R486 100 1/4W R487 4.7K 1/4W C458 50V10 YXF_P C456 0.01 B 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 ON/OFF 12 PWM/Dimming 13 NC N.C(open) 14 14PIN CD403_1 CU2E0601 LCD+B REG BLOCK LIGHT_CTL 1.6A 125V EV+17V REG Q422 LIGHT_POWER_H SW+12V F404 SW+12V[UNREG] KTB1151 W830 DC/DC(5V) L408 L415 LCD+B 20N_1600FS 13.5 12.4 5 1.6A 125V 12.8 IC407 LA5779 47uH1315 22uH TSL0808 R491 390 +-1% VIN VOUT G 2.5V ON/OFF CP411(CP3401) 1 2 3 4 5 TWG-P23P-B1 R492 2.7K +-1% 13.5 12.4 5.1 0 R499 2.5 0 SOUND+B[SW] SOUND+B 1 P.CON+5V R495 12.8 5.1 5.2 100 R483 R484 GND_S SOUND+B 2 SOUND GND 3 C461 6.3V 1000 ZL_P C453 16V1000 ZL_P D406 EC31QS04 R482 2.2K +-1% R493 2.2K 1/4W +-1% C446 16V470 MHE_P R470 560 1/4W D455 SR240-F 100 SW+12V REG4.5 4.5 SW+12V REG Q420 Q423 KTC3875S_Y_RTK KTC3875S_Y_RTK 6.8K +-1% 47 +-1% SOUND GND 4 GND 5 GND 6 GND GND 7 SW+12V SW+12V 8 GND 4 SW+5.5V[EU] L405 DC-DC-FET SW+5.5V W843 W846 22uH TSL0808 R471 1 Q410 5.7 S RSS050P03 1.5 D 8 L409 REGULATOR 0.047 1/4W 33uH IC405 PQ070XF02SZH C449 R472 2 5.7 S 7 1.5 D 7313NH SYS_POWER_H LIGHT_CTL LIGHT_POWER_H AT+5V S802X S803X S803Y SW+12V 9 LCD+B 10 SYS_POWER_H 11 LIGHTE_CTL 12 LIGHT_POWER_H13 AT+5V 14 AT+5V 15 B402 HCB1608KF-181T20 B403 HCB1608KF-181T20 C469 50V 47 YXF C470 6.3V2200 MHE_P R525 4.7K +-1% C425 0.1 B C451 0.01 B R469 33K C452 27P CH 4321 16V 1000 ZL_P 0.047 1/4W 3 5.7 S 6 1.5 D VIN VO GND VADJ C450 HDD/RW5V DC/DC CTL IC406 AL1015 4.0 1.5 5 1 2 3 4 5.7 3.9 0 1.3 0.1 B 13.9 VIN 13.9 CS 4 G D 5678 3 DTV+B2 R524 10K +-1% 4.5 13.1 V5/PWON EXT 1.2 Vref/SS GND 0 1.3 CC FB 1.3 C454 0.1 B R476_1 560 1/4W R477 100 +-1% R461 22K R464 P.CON+5V SW Q417 KTA1241_Y 5.2 5.2 4.4 100 1/4W POWER_FAIL DTV+B2 DTV+B POWER_FAIL 16 GND 17 GND 18 GND 19 DTV+B2 20 DTV+B2 21 DTV+B 22 DTV+B 23 4.7K +-1% +-1% 0 5.0 P.CON SWITCH R474 Q418 0 KRC101S-RTK GND H 8 7 6 5 4 3 P.CON+5V AT+5V SYS_POWER_H D407 EC31QS04 C473 0.0015 B C457 0.0015 B C462 6.3V 1000 ZL_P DTV+B 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 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 CAUTION:SINCE THESE PARTS MARKED BY ARE CRITICAL FOR SAFETY,USE ONES DESCRIBED IN PARTS LIST ONLY D E LCD+B S802Y ATTENTION:LES PIECES REPAREES PAR UN ETANT DANGEREUSES AN POINT DE VUE SECURITE N'UTILISER QUE CELLS DECRITES DANS LA NOMENCLATURE DES PIECES F CAUTION: DIGITAL TRANSISTOR G 2 PCB240 1 CEF273 H H-30