LG 42LH90 - Advanced Remote Control Functions; Menu Navigation and Special Buttons; USB and SIMPLINK Control Buttons; Installing Remote Control Batteries

PWM-DIM (PWM Dimming) Manipulates the
Backlight Brightness via Customer’s OSD.
Manipulates the Backlight Brightness via the
Video Processor chip. Darker Picture,
Darker Backlights to facilitate improved
Contrast Ratio. 0.6V ~ 3.3V Range
42LH90 P700 on Main Board to SMPS Turn On Circuit
42LH90 P700 on Main Board to SMPS Turn On Circuit
R189
R185
100
Ω
100
R7141
R704
C711
15pF
P700
11.9V
Gnd
Gnd
Gnd
Gnd
0V
3.2V
5V
1.66V
P201
ERR
PWR
A.DIM
INV.On
PWM-DIM
n/c
SMPS
AD12
100
Ω
n/c
Gnd
Gnd
Gnd
Gnd
Analog Dimming (Fixed Value)
100
Ω
H5
R245
100
SBY5V
MAIN
BOARD
5.15V
Gnd
Gnd
12V
2
1
4
3
6
5
8
7
10
9
11
12
14
13
16
15
18
17
20
19
22
21
23
24
2
1
4
3
6
5
8
7
10
9
11
12
14
13
16
15
18
17
20
19
22
21
23
24
24.1V
24V
Gnd
Gnd
Gnd
Gnd
Gnd
Gnd
n/c
n/c
n/c
n/c
L706
L707
24V
C722
47uF
C728
1uF
L704
12V
C721
68uF
L701
R771
R257
G5
R719 10KΩ
Q702
R713
0Ω
R717
3.3KΩ
P5.3
R244
100Ω
+5V_General
INV_CTL
3
1
2
6
5
8
7
Q706
+5V
L715
12V_TCON (LVDS 12V)
Q703
R757
0Ω
0.2V
0.6V
4
Q705
PANEL_CTL
0.6V
12V
R739 47KΩ
R740 47KΩ
AB13
Digital Dimming (Variable)
C726
220uF
+5V_ST
L700
R760
0
L705
RL_ON
PWM0
PWM2
5V_ST
4.7K
C725
1uF
C706
1uF
24.1V
4.65V
0Ω
35
Q701
L708
5.2V
n/c
n/c
INV ON/OFF
PWR ON
A-DIM
PWM-DIM
R707
4.7K
P5.6
Error Out
Stby = 0V Run = 0V
Error=5V: Normal 0V:
Micro shuts off
television.
IC100
Micro
RL_ON
R201
100Ω
31
Power Det
H6
Reset
D4
Key 1
A4
Key 2
B4
Power On/Off
F6
GPIO-09
R706
20K
Error Out
5.15V
5.15V
5.15V
11.9V
Q704
0V
E5
100Ω
R251
R726
10KΩ
L728
+5V_General
L709
3.3V_ST
From IC702
From
IC103,Q106
Reset