LG 42PW350 - P501 Main Board Plug to Power Supply Voltages and Diode Check; P501 Connector Pinout and Voltages

P501 Main Board Plug to Power Supply Voltages and Diode Check
Pin c front
P501 "Main" to P813 "SMPS"
P501
Fti dd
Pin Label STBY Run Diode Check
1_2
a
17V 0V 17V Open
3-4 Gnd Gnd Gnd Gnd
F
ron
t
p
i
ns are o
dd
Back pins are even
5-7
a
5.1V 0.46V 5.17V 1.18V
8
a c
Error_Det 3.44V 4.02V 1.73V
9-12 Gnd Gnd Gnd Gnd
13-14 STBY_5V 3.47V 5.14V 1.07V
15
a
RL_ON 0V 3.28V 1.78V
16
a d
AC Det 0V 4.06V 1.04V
17
b
MON
0V
3 28V
1 79V
a Note: The RL_On turns on +5V, 17V Error Det. and AC_DET.
b Note: The M5
-
On command turns on M5V Va and Vs
17
b
M
_
ON
0V
3
.
28V
1
.
79V
18
e
Auto_Gnd Gnd Gnd Gnd
b
Note:
The
M5
-
On
command
turns
on
M5V
,
Va
and
Vs
.
c Note: The Error Det line is not used in this model.
d Note: If the AC Det line is Missing, Audio will Mute.
e Note: Pin 18 is grounded on the Main. If opened, the power supply turns on automatically.
June 2011 42PW350 Plasma
149
Diode Mode Check with the Board Disconnected. DVM in the Diode mode.