LG RT-20LA30, Service Manual

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1. Application Object

This instruction is for the application to the LCD TV.

2. Notes

(1) This set uses an adapter, so connect the adapter and the

set correctly before adjustment.   

(2) The adjustment must be performed under the correct

sequence.

(3) The adjustment must be performed in the circumstance of

25

!

5

c

C of temperature and 65

!

10% of relative humidity if

there is no specific designation.

(4) The input voltage of the receiver must keep 220V, 60Hz in

adjusting.

(5) The set must be operated for 30 minutes preliminarily

before adjustment if there is no specific designation.

[

‘Heat Run’ must be performed with the full white signal or TV

noise signal in the internal part of the set.

[ 

The time for ‘Heat Run’ can be changed owing to production
plan.  

3. Auto RGB Adjustment

3-1. Preparation for Adjustment

(1) Receive the Digital Pattern.

3-2. Adjustment

(1) Select AUTO RGB ADJ by pressing SVC Key of Remote

Control for Adjustment.

(2) Select “A RGB” Item.
(3) Press the VOL + Key to appear “OK”.

4. RGB LEVEL Adjustment

4-1. Using Equipment

(1) Pattern Generator(408NPS-READER) which 10 STEP is

possible.

(2) A Remote Control for Adjustment

4-2. Adjustment

(1) Select RGB LEVEL by pressing SVC Key of Remote

Control for Adjustment.

(2) Adjust that until 9th and 10th STEP is undistinguished by

using VOL +/- Key in R-LVL item.

(3) Adjust G-LVL and B-LVL as same way.
(4) When adjustment is finished, Store it by pressing OK  key.

And escape it by pressing TV/AV Key.

5. Using method for CA-110

Use it in case of needing adjustment brightness. 

6. OPTION Adjustment

(1) Press YELLOW button,or OP1,OP2,OP3 button on SVC

Remote Controller.    

(2) INput data directly by the buttons corresponded with

OPTION 1 ???(0~255),OPTION 2 ??(0~63),OPTION3
???(0~255).

(3) Select each OPTION funtion by the CH Up/Down button.

Table 1.  OPTION 1 Function

ADJUSTMENT INSTRUCTION

COLOR

ANALYZER:

CA110

30[cm]

LCD TV

Center of

Screen

Input signal of Video

PAL BG 05 CH

NTSC 13 CH

0

1

0

1

0

1

0

1

0

1

0

1

0

1

2

3

SCART

A2 ST

SYS

TOP

I/II SA

TEXT

200 PR

Option

Code

Function

Remark

100 PROGRAM SAVE

200 PROGRAM SAVE

Without TXT

With TXT

No Save DUAL SOUND Condition

Save DUAL SOUND Condition

FLOF TEXT

TOP TEXT

DVD JACK

SCART JACK

NICAM CHECK

NICAM&FM STEREO

B/G,I,D/K

B/G,L/L

B/G,I,D/K,M

RESERVED