LG CS580 5 free download

File name CS580_5.PDF

TROUBLE SHOOTING GUIDE 1. NO POWER NO POWER CHECK C910 NO TROUBLE IN DC VOLTAGE? F901, R901, AND R910, D901 OPEN/SHORT DC=MORE THAN 150V YES TROUBLE IN CHECK CHECK NO NO IC901, IC902, IC952, T901 IC901 Q901, R917, R920, PIN 3? PIN 6 ? 20V AND R921 YES YES TROUBLE IN Q901, R917, R920, AND R921 NO OUTPUT CHECK VOLTAGE CHECK SMPS 2nd NO TROUBLE IN Q501, Q501, 2nd DC DC VOLTAGE ? VOLTAGE LINE ? 2nd DC VOLTAGE LINE 6.3V/ 12V/ 12.5V 14V/ 72V YES CHECK NO TROUBLE IN IC952 PIN 7 IC952 VOLTAGE (5V)? YES TROUBLE IN OTHER PRIMARY CIRCUIT - 18 - 2. NO CHARACTER NO CHARACTER CHECK NO TROUBLE IN IC201 PIN 17 (8V)? Q203, D211, 12V LINE YES CHECK TROUBLE IN NO IC201 PIN 2, 4, 6 ? PC SIGNAL, C201, C202, C203 YES CHECK NO TROUBLE IN IC201 PIN 15, 19, 22 ? IC201 1.2v YES CHECK TROUBLE IN NO IC301 PIN 3, 4, 10 ? IC301 YES CHECK TROUBLE IN NO R, G, B CATHODE Q301, D301, D302 VOLTAGE? NORMAL=75~110V YES TROUBLE IN CRT SOCK