LG 50PK950 Training Manual page 49

50PK950 Television Turn On Sequence
50PK950 Television Turn On Sequence
In Stand-By Primary side is 158V
F302
In Run (Relay On) Primary side is 390V
F801
Stand-By 0.8V
AC In
Run 390V
1
Stand
By 5V Reg
STBY RUN
3.48V 5.15V
AC Stand By
Error Det.
Det. 5V
6 2
Used
Error Det.
AC Det.
If missing,
set will not
turn on.
3.3VST
3.3V Reg
IC400
2
Reset
3
IC707
POWER SUPPLY
(SMPS)
+5V
Regulator
17V
Reg
5
5V 17V
6
6 6
RL On
Not
5
7V 17V
Via Audio
IC404 IC300
+5V HDMI
EDID
Tuner
And other
5V
circuits
Via
IC405
5
Error Relay
M5V On
Det.
On
7
Microprocessor
IC701
4
7
M5V
Reg
9
Vs
Reg
Vs
8
Va
Va
Reg
8
Va
8
M_On
Y-SUS
Va
5VFG
7
8
Floating
At point 3
TV is in
Stand-By
state. It is
Energy Star
Compliant.
Less than 1
Watt
8
MAIN
Board
STBY 5V
Power On
49
9
7
9
Vs Vs
M5V
9 7 9
Z-SUS
18V
18V / M5V
8 7 7
5V
18V / M5V
Gnd
Y DRIVE Upper
Y DRIVE Lower
3.3V
7
Va
X PWB X PWB
Left Center
8
2
Front IR
4 Board
Remote Power Key
October 2010
CONTROL
7 M5V
3.3V
7 7
8
7
Va
X PWB
Right
8
Soft
Touch
Key Pad
Power Key
50PK950 Plasma