32LC2D (CHASSIS:LB61A) - LG TV Service Manual (repair manual). Page 10

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These instructions are applied to all of the 32" LCD TV,
LB61A Chassis

(1) Because this is not a hot chassis, it is not necessary to use

an isolation transformer. However, the use of isolation
transformer will help protect test equipment.

(2) Adjustments must be done in the correct order.
(3) The adjustments must be performed in the circumstance of

25±5°C of temperature and 65±10% of relative humidity if
there is no specific designation.

(4) The input voltage of the receiver be must kept 220V~,

60Hz when adjusting.

(5) The receiver must be operational for about 15 minutes

prior to the adjustments.  

O

Preliminary action is applied to the test for afterimage

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

O

Test for afterimage discharge detection

1) After pressing Power Only key(only operating by

pressing Power Only key), Full Test Pattern(2 min
30sec) --> Full Black Pattern(30sec) --> After this state,
Full White Pattern is displayed.
(but you must preset the program for Full White State
when you press the Main Power Off/On) 

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

[ Set is activated HEAT-RUN without signal generator in

this mode.

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

(1) Test Equipment: PC, Jig for download
(2) Connect the power of VSC B/D.
(3) Execute download program of PC.
(4) After executing the hot key on the Programmer, click icon.
(5) End after confirming.

(1) Test Equipment: PC, Jig for download
(2) Connect the power of VSC B/D.
(3) Execute download program of PC.
(4) After executing the hot key on the Programmer, click icon.
(5) End after confirming.

MST3362M-Set adjustment to set the black level and the Gain
of optimum with an automatic movement from the analog =>
digital converter.

Service R/C, 801GF(802B,802F,802R), 
MSPG-925 Pattern Generator.
( 480i, 1080i 60Hz Color Bar Pattern output will be possible
and the output level will accurately have to be revised with
0.7±0.1Vp-p)

1) Select Component1 as the input with Color Bar Pattern

in 480i 60Hz mode and select ‘Component1’ on screen. 

2) After receiving signal for at least 1 second, press the

ADJ Key on the Service R/C to enter the ‘Ez - Adjust’
and select the ‘1. ADC 480i Comp1’. Pressing the Vol+
Key to adjust the component1.  

3) When the adjustment is over, 'Component1 Adjustment

OK’ is displayed. If the adjustment has errors,
'Component1 Adjustment Failed! Try Again!’ is
displayed.

4) Readjust after confirming the case Pattern or adjustment

condition where the adjustment had errors. 

5) After adjustment is complete, exit the adjustment mode

by  pressing the ADJ KEY.

1) Select Component2, RGB-DTV as the input with Color

Bar Pattern in 1080i 60Hz mode and select
‘Component2’ on screen. 

2) After receiving signal for at least 1 second, press the

ADJ Key on the Service R/C to enter the ‘Ez - Adjust’
and select the ‘2. ADC 1080i Comp2/RGB’. Pressing
the Vol+ Key to adjust the component2.  

3) When the adjustment is over, 'Component2 Adjustment

OK’ is displayed. If the adjustment has errors,
'Component2 Adjustment Failed! Try Again!’ is
displayed. and If the adjustment has errors, 'RGB
Adjustment Failed! Try Again!’ is displayed.

4) Readjust after confirming the case Pattern or adjustment

condition where the adjustment had errors. 

5) After adjustment is complete, exit the adjustment mode

by  pressing the ADJ KEY.

PC

VSC

B/D

JIG cable(EPLD D/L )

<Fig. 1>  Connection Diagram of CPLD Download

(Fig. 2) Adjust Pattern : 480i, 1080i 60Hz Color Bar Pattern