LG 32LD350 - Page 42

IC100
MStar
A-DIM
PWM-DIM
INV On/Off
3.32V
VBR-B (PWM Diming) Manipulates the Backlight Brightness via Customer’s OSD.
Manipulates the Backlight Brightness via the BCM Chip. Darker Picture, Darker
Backlights to facilitate improved Contrast Ratio. 0.65V ~ 3.25V Range
INV-On/Off
AB12
PWB-2
Q405
18
24
G5
A-DIM (Analog Diming) Fixed Voltage, this line is not used.
P402
POWER SUPPLY
RL-ON
PWR
3.41V
E5
1
12V
Reg
21
4
CN1
2
5
4
1
BALLAST
12
INV On/Off
4.49V
14
13
BR1
PWM-DIM
24V
Reg
3
ERR
0.59V
20
11
ERR
P201P203
MAIN PWB
18
24
22
1
17
2
20
24V
2
5
4
1
12
14
13
3
11
November 2010 32LD350 LCD-DV
32LD350 Main Board to Ballast Turn On Commands
32LD350 Main Board to Ballast Turn On Commands
42
Q401
Q402
3.3V_Normal
12V
24V
9 10 11 12
3.5V_ST
19
3
Error
E5
22
n/c
24.19V
11.97V
Error Normal is Low. But
when the backlights are
told to fire via INV_ON,
this line goes high. When
they fire, it goes back low.
If they fail to light after 5
attempts, the set shuts off.
Controller
24V
6 7 8 9 10