Lcm Backlight Trouble - LG GB195 Service Manual

4.7 4.7

LCM Backlight Trouble

LCM Backlight Trouble
4.7 4.7 LCM Backlight Trouble LCM Backlight Trouble
4.7.1 Test Point
4.7.2 Circuit Diagram
1 BL_PWM_EN
TP1
VBAT
C528
1.00uF
R516 1 2 22.0Ohm
BL Driver
R528 1
U502
VBAT_BL 5
IN
4
C+
C529
1.00uF
3
C-
BL_PWM_EN_1
6
EN/SET
7
RESET
R517 AAT3192IJQ-1-T1
14.3Kohm
R419 <==> current
14.3K
11.5K
-64-
2 NC
LCM_A
2
OUT
LCM_K1
10
D1
LCM_K2
9
D2
1
NC
8
GND
20mA
25mA
C532
1.00uF