LG 50PQ30 Training Manual page 37

Standby 5V will not
be output if the Main
Power Switch is off.
AC In
1
Stand
By 5V Reg
5V Mnt.
Stand
AC
6
Det. By 5V
2
3
5V
Mnt
AC Det.
If missing,
the set
+5V
will turn
HDMI
off in 10
EDID
seconds.
2
3.3V Reg
IC301
Microprocessor
3
AC-Det
50PQ30 POWER SUPPLY START UP SEQUENCE
50PQ30 POWER SUPPLY START UP SEQUENCE
In Stand-By Primary side is 160V/123V
In Run (Relay On) Primary side is 386V
POWER SUPPLY
(SMPS)
5V/12V
Regulators
5
17V
RL
Reg
On
14
5V
M5V
12V
On
17V
Relay
7
On
5
17V Audio
PWR
12V Tuner
On
B+ stepped
down to 5V
Video
Processing
3
At point TV is in
Stand-By state.
Relay
It is Energy Star
On
Compliant.
Less than 1 Watt
6 5
M5-On
8
Vs/Va-On
13
IC1
(BCM)
Power On 4
M5V
8
Reg
8
Vs
16
Reg
Vs
13
Va
Va
Reg
15
Vs
Va
Vs
15 16
On
Y-SUS
Va
8
13
15
MAIN
Board 15
Va
STBY 5V
Power On IR
37 Published November 2009
FG5V
Floating Gnd 5V
10
16
Vs Vs
M5V 5VFG
8 10 16 16
Z-SUS
M5V 17V
17V
9 11
11
12
3.3V
X PWB X PWB
Left Center
15
Va
Front IR
2
Remote
Board
Or Key
4
50PQ30 Plasma
Y DRIVE
Upper
Y DRIVE
Lower
CONTROL
11
9 12
17V M5V 3.3V
12
12
3.3V 3.3V
X PWB
Right
15
Va
Power Button
Off
On