LG 42LV5500 - Power Supply Start Up Sequence

42LV5500 Power Supply Start Up Sequence
43
Inverter On
Starts the Inverters
Stand By
3.5V
Remote or Power Button Key
MAIN
BOARD
PWR_ON
DRV
ON
Stand By
3.5V Reg
2 5 66 8
4
5
Primary side fuses:
Stand-By 7.6V Run 396V (Hot Gnd)
3
12V 24V
12V
At point TV is in
Stand-By state.
Energy Star compliant.
0 .1 Watts
3
Other Regs
BACKLIGHTS
To Panel Backlights
120Hz
Manipulates Backlight
LEDs
Low = Bright
2
No AC
Det in
this
model
After Mute Released
LVDS Video
Ft IR / Soft Touch Key
45V
Model 1_Opt1 Panel Control
INV_CTL
Microprocessor IC602
RL_ON
Tru-Motion
LVDS Video
Q507
P201
T510 &
Rectifier
P203
Power On/Off1/2
5
P202
45V
P502
P901
Inverter On
P1501
Reset
Generator
C608
R644
1
AC In
3.5V_ST
P-DIM1
8
4
P1502
Panel
VCC
12V
5
7
Key 1 or IR
7
Video
Processor
IC101
SCLK
MOSI, CLK,
VS
16 Blocks
9
POWER SUPPLY (SMPS)POWER SUPPLY (SMPS)
BridgeRelays
L601
D253
6
5
12V/24V
Regulators
On Board
Inverter
8
6
Local and
Global Dimming
Local and
Global Dimming
5
P-DIM1 (PWM-DIM)
Pulse Width Dimming
Global Dimming
Manipulated by:
Cust Menu for Backlight
and
Picture Content
Manipulate P-DIM
8
8
22182~4
See
Note 1:
IC502
PWR_DET
IC1702
Audio Amp
17
19
21
19~12
Note 1:
12V TURNS ON:
IC501 0.9V Core
IC503 Power Det
IC506 5V_USB
IC507 5V_Normal
IC505 3.3V_Normal
P-DIM
2
Globar
Dimming
7
12V LVDS
T-CON PWB
Q504
Q506-7
VCC 3.3V, VDD 16.7V,
VGL_I -5V, VGH 28V,
P-VDD 16V
9
7
Voltages for
the Panel
Video
LCD PANEL
P1601
Local
Dimming
9
9
10
3 5 8
10
7
Q501
Q502
10
May 2011 LCD-DV 42LV5500