LG 42LV5500 - TV Turn On Commands (Main Board Side)

0.2V~3.3V
PWM-DIM1
PWM-DIM_22
n/c
PWM-DIM1 (PWM Dimming) can vary
according to incoming video IRE level,
OSD Backlight setting and Intelligent
Sensor (room light condition).
Range 0.37V to 3.3V.
42LV5500 Television Turn On Commands Circuit Drawing
R532
100Ω
12V
Gnd
Gnd
Gnd
Gnd
2.62V
ERR OUT
PWR_ON
DRV_ON
SMPS
P201
AH17
11
MAIN
P502
3.55V
Gnd
1
6
5
8
7
10
9
12
11
14
15
19
17
21
18
24
22
1
6
5
8
7
10
9
12
11
14
15
19
17
21
18
24
22
Gnd
L503
L501
+12V
C506 0.1uF
R502
10K
10
Q504
+3.3V_Normal
INV_CTL
S
2
6
D
7
Q507
L509
Panel_Vcc (12V)
3.47V
G
Q506
Model_Opt_1
1.8V
+12V
R558 10KΩ
C508
0.1uF
+3.5V_ST
RL_ON
3.26V
44
Q502
L511
+3.5V_ST
INV_ON
PWR_ON
IC602
Micro
RL_ON
Power Det
14
Reset
40
Key 1
25
Key 2
26
Power
On/Off 2_2
20
R508
4.7K
3.55V
3.55V
3.55V
Q505
0V
36
R542
10KΩ
+3.3V_Normal
Reset
Gnd
13 13
16 16
n/c
23 23
n/c
n/c
Q501
R547 10K
R644
47K
C608
0.1uF
IC101
BCM
R228 22ΩR526 0Ω
R643
22Ω
IR
16
R605
100Ω
R553
47K
R559 1.8K
To DC to DC Conv
T-CON
+12V
L507
IC505
Power_On/Off2_2
R546
1K
0.68V
R555 22KΩ
11.97V
11.94V
11.96V
3.35V
0.64V
0V
3.5V
2.62V
0V
0V
3.28V
12V
3
2
4
3
2
4
L504
+24V
C519
0.1uF
24V
24.5V
12V
P-DIM: Digital
Dimming (Variable)
SBY3.5V
20 20
AE9
R221 22Ω
DIM0_MOSI
n/c
24.5V
24.5V
12V
12V
AE17
DIM0_VS
n/c
n/c
AE8
R222 22Ω
DIM0_SCLK
(Data) 3.56V p/p Data
3.51V p/p
3.54V p/p
IC8007
IC8008
3
1
1
2
2
3
4
4
4
4
5
6
6
7
7
8
8
8
9
9
9
4
1
n/c
n/c
P1601
8
3
5
To
SMPS
P832
R230 22Ω
n/c
9
9
8
Panel_CTL
0V
May 2011 LCD-DV 42LV5500