LG 50PK950 Training Manual page 54

SMPS Connector P813 Identification, Voltages and Diode Check
SMPS Connector P813 Identification, Voltages and Diode Check
P813 Connector "SMPS" to "Main" P400
Pin
1-2
3-4
5-7
a c
8
9-12
13-14 Stby 5V
15
a d
16
b
17
e
18 Auto Gnd
a
Note: The 17V, 5V, AC_Det and Error Det turn on when the RL_On command arrives.
b
Note: The M5V, Va and Vs turn on when the M_On (Monitor On) command arrives.
c
Note: The Error Det line is not used in this model.
d
Note: If the AC Det line is Missing, the TV will not turn on. (Relays will click, then no functions).
e
Note: Pin 18 is grounded on the Main board. If this line is floated, the SMPS turns on
Automatically when AC is applied.
Diode Mode Readings taken with all connectors Disconnected. DVM in Diode Mode.
Label STBY
a
17V 0V
Gnd Gnd
a
5V 0V
Error Det 3.47V
Gnd Gnd
3.49V
RL On 0V
AC Det 0V
M_ON 0V
Gnd
Run Diode Mode
17.3V 3.186V
Gnd Gnd
5.17V 1.16V
4.1V 3.09V
Gnd Gnd
5.13V 2.55V
3.26V Open
4.06V 3.06V
3.28V Open
Gnd Open
54 October 2010
P813
1
Note: This connector has two
rows of pins.
Odd on bottom row.
50PK950 Plasma