LG 50PK950 Training Manual page 46

50PK950 SMPS Layout Drawing
50PK950 SMPS Layout Drawing
F801
0.8V STBY
390V Run
At Power Off
st
3sec 1 click
nd
4sec 2 click
P812
1-2) VS
Model : PDP 50R1###
3) n/c
Voltage Setting: 5V/ Va:60/ Vs:203
4-5) Gnd
N.A. / -190 / 150 / N.A. / 115
6-7) VA
Max Watt : 450 W (Full White)
8) Gnd
9-10) M5V
POWER SUPPLY
P812
p/n: EAY60968801
Va Vs
TP TP
Q801
F801
Q802
4A/250V
Hot
D603
Ground
D602
IC301
Hot
Ground
Q601
D102
Q603
D101
Example Panel Label:
VA VS
T901
D902
D901
D501
T902
Q501
F302
D355
158V
STBY
D351
390V Run
F302
2.5A/250V
D352
T301
Q356
RL101
RL103
AC In
SC101
Input: 100~240V 50/60Hz 5.8A
17V = 1.7A
5.1V = 3.0A
STBY5V (5V) = 1.0A
VS 195~204V = 1.9A
VA 60V = 2.5A
M5V (5.1V) = 3.5A
PDP Module MAX 450W
CURRENT LABEL
46
P811
VR901
VS Adj
VR501
VA Adj
a
Note: The RL_On command turns
on the 17V and AC_DET.
b
Note: The M-On command turns
F101
on +5V, M5V, Va and Vs.
c
Note: The Error Det line is not
10A/250V
used in this model.
n/c
d
Note: If the AC Det line is
Missing, the TV will not turn on,
except the Relays, then no other
functions. LOGO On.
P813
e
Note: Pin 18 is grounded on the
Main. If opened, the power
supply turn on automatically.
Pin Label STBY
P811
a
1, 2 17V
1-2) VS
3, 4 Gnd Gnd
3) n/c
b
5, 7 5V 0.4V
4-5) Gnd
c
8 Error Det 3.47V
6-7) VA
9-12 Gnd Gnd
8) Gnd
13-14 Stby 5V 3.49V
9-10) M5V
a
15 RL_ON
a d
16
AC_Det
b
17 M_ON
18 e Auto_Gnd Gnd
October 2010 50PK950
Run Diode
0V 16.9V 3.186V
Gnd Gnd
5.19V 1.16V
4.11V
3.09V
Gnd Gnd
5.15V 2.55V
0V 3.26V Open
0V 4.07V 3.06V
0V 3.26V Open
Gnd Open
Plasma