50PY3DF-UA (CHASSIS:PA73A) - LG TV Service Manual (repair manual). Page 7

- 7 -

O

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) Connect + terminal of D.M.M to Va pin of P805 and

connect – terminal  to GND pin of P805.

2) Adjust RV501 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 P805 and

connect – terminal  to GND pin of P805.

2) Adjust RV401 voltage to match that of the label on the

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

6. EDID(The Extended Display 

It is the feature to implement the “Plug and Play” which
automatically reconfigures the user’sl environment to directly
use by exchanging information without any command directly
to the PC or the monitor by the user, which is established by
the VESA

(1) PC(S/W: EDID TESTER Ver.2.5)
(2) EDID Download JIG (PC serial to D-sub connection cable)
(3) Connection Cable

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.)