Panasonic TH-43JX800, Technical Manual

Page: 34 / 66

P
GK
A
LCD Module
Power
For
LED
(Back
Light)
T-CON
board
LCD Panel
A02
A16
44 - 51
STB5V
F15V
P3
Transformer
T7301
Q7421/22
PFC
T7202
IC7201
DC/DC
IC7301
P2
Q7805/06
7
ex.64V(*)
Output
16V
Output
1
4
PNL12V
16V
STB5V
3
9
TV_SUB_ON
5
BL_ON
14
2
LED
Drive
IC7800
1 - 4
L7851/ Q7851
/IC7860
DC/DC
IC7491
POWER
Switch
When the TV is plugged in, the power board outputs 5V for standby voltage.
When the power supply receives the TV_SUB_ON signal, it outputs 2 different voltages:
16V to the A board on pins 1, 2, 3 and 4 of connector P2.
64V(*) to the LED backlight drive part.
After A board is ready to display, it outputs Backlight_on command to P board.
P board output 110V(*) to the backlight of LCD panel on pins 10,11,12 and 13 of connecter P3.
10
POWER_ON KEY3
6
(light)
2
ex.64V(*)
34
Start up Operation 1-1
(DC/DC)
6
(light)
VLED
(ex.110V*)
(*)The DC level is different
by the LCD panel.
5
13
10
1 - 4
9
3
10-13
1-8
( TNPH12294** )
TH- ##JX800*, 900W (Android TV)