LG 43LX310C, Руководство по обслуживанию

Страница: 14 / 42

- 14 - LGE Internal Use Only Copyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
TROUBLE SHOOTING
1. Power-up boot check
Check stand-by Voltage.
P401 5, 6pin : +13.2V
Check 12pin Pow er connector
Main B/ D 13.2V Line
Short Check
Check X101 clock
24 MHz
Replace X101
Check P401 PWR_ON.
1pin : 3.3V
Replace Mstar(IC101) or Main board
Check Multi Voltage
P401 7, 8pin : A13.2V
Replace Power Board
Check DRV ON Control
P401 11 pin : High
Check Pow er Board
Check IC405, IC404, IC400, Q406
Output Voltage
IC405 : 3.5V
IC404 : 1.5V
IC400 : 1.1V & 5V
Q406 : 3.3V
Replace IC405, IC404, IC400, Q406
Re-dow nload software.
Check stand-by Voltage
L403 : +13. 2V
Replace L403
Check LVDS Pow er Voltage
Q405 : 13.2V
Replace Q405
Check Mstar LVDS Output Replace Mstar(IC101) or Main Board
Change Module
ok
ok
ok
ok
ok
ok
ok
ok
ok No
No
ok
Replace Power board.
ok
No
No
No
No
No
No
No
No