LG 42PW350 - Power Supply Static Test (Forcing on the SMPS in stages); Sequential SMPS Power-Up Test

WARNING: Remove AC when adding or removing any plug or resistor.
Power Supply Static Test (Forcing on the SMPS in stages)
TEST CONDITIONS:
Connector going to the Z-SUS P811 is disconnected.
P601 on the Main board disconnected (coming in on P813).
Use the holes on the connector P501 (Main Board side) to insert the resistors or jumper leads.
Connect (2) 100 Watt light bulbs in series between VS and Ground.
When the supply is operational in its normal state the Auto Ground line
at Pin 18 of P813 is held at ground by the Main Board.
This Power Supply can be powered on sequentially to test the Controller
Chip IC701 operational capabilities and for troubleshooting purposes.
By disconnecting
P501 on the Main board,
pin 18 is opened. To return the
By
disconnecting
P501
on
the
Main
board,
pin
18
is
opened.
To
return
the
SMPS to the normal state for the Static Test procedure, this pin must be
grounded. (See first step A below).
Note: Leave previous installed 100Ω resistor in place
when adding the next resistor.
(A) Ground the Auto Gnd Line (Pin 18) will allow the supply to be
powered up one section at a time.
(B) Add a 100Ω ¼ watt resistor from 5V Standby to RL_ON and the 17V
and 5V Run Lines on P813 will become active Also AC
-
Det and
and
5V
Run
Lines
on
P813
will
become
active
.
Also
AC
-
Det
and
Error_Det will go high.
(C) Add a 100Ω ¼ watt resistor from any 5V line to M_ON (Monitor On) to
make the M5V, VS and VA lines operational.
P811 (VS pins 1 and 2) (VA pins
5)
and the (M5V pins
6)
June 2011 42PW350 Plasma
68
P811
(VS
pins
1
and
2)
(VA
pins
5)
and
the
(M5V
pins
6)
.