50PG60D-SA (CHASSIS:PB82C) - LG TV Service Manual (repair manual). Page 5

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Preliminary action is applied to the test for afterimage

discharge detection, and 100% FULL WHITE PATTERN
must be operated automatically.

(1) Pressing Power On key on the adjustment R/C
(2) Full Test Pattern(2 min 30sec) --> Full Black

Pattern(30sec) --> Full White Pattern
(Full White Pattern when the main power is turned on
again after being turned off) 

(3) Pattern Mode is deselected by pressing CH +/-, Exit Key.

[

Set is activated HEAT-RUN without signal generator in this

mode.

(1) D.M.M 1EA
(2) Voltage adjustment bar 

Refer to Fig 1.

1) Connect + terminal of D.M.M to Va pin of P811 and

connect – terminal  to GND pin of P811.

2) Adjust VR901 voltage to match that of the label on the

Top/Right of the panel. (Deviation : ±0.5V)

1) Connect + terminal of D.M.M to Vs pin of P811 and

connect – terminal  to GND pin of P811.

2) Adjust VR951 voltage to match that of the label on the

Top/Right of the panel. (Deviation : ±0.5V)

Test Pattern 2min 30sec

Test Pattern 30sec

If you turn on a still screen more than 20 minutes (Especially
Digital pattern(13 CH), Cross Hatch Pattern), an afterimage
may occur in the black level part of the screen.

Each PCB Assy must be checked by Check JIG Set before
assembly. (Especially, be careful Power PCB Assy which can
cause Damage to the PDP Module.)

<Fig. 1>  Connection Diagram for Measuring (Power Board):

LGIT 50” EAY39190301