LG Electronics 47LM761S/761T, MFL67360901 Adjustment Instruction, Application Range, Designation

ADJUSTMENT INSTRUCTION

1. Application Range

This specification sheet is applied to all of the LED LCD TV with LD22E chassis.

2.Designation

(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 instrument.

(2)Adjustment must be done in the correct order.

(3)The adjustment must be performed in the circumstance of 25 °C ± 5 °C of temperature and 65 % ± 10 % of relative humidity if there is no specific designation.

(4)The input voltage of the receiver must keep AC 100-240 V~, 50/60 Hz.

(5)The receiver must be operated for about 5 minutes prior to the adjustment when module is in the circumstance of over 15.

In case of keeping module is in the circumstance of 0 °C, it should be placed in the circumstance of above 15 °C for 2 hours.

In case of keeping module is in the circumstance of below -20 °C, it should be placed in the circumstance of above 15 °C for 3 hours.

[Caution]

When still image is displayed for a period of 20 minutes or longer (Especially where W/B scale is strong. Digital pattern 13ch and/or Cross hatch pattern 09ch), there can some afterimage in the black level area.

3. Automatic Adjustment

3.1. ADC Adjustment

3.1.1. Overview

ADC adjustment is needed to find the optimum black level and gain in Analog-to-Digital device and to compensate RGB deviation.

3.1.2. Equipment & Condition

(1)USB to RS-232C Jig

(2)MSPG-925 Series Pattern Generator(MSPG-925FA, pattern - 65)

-Resolution : 1080P Comp1

1920*1080 RGB

-Pattern : Horizontal 100% Color Bar Pattern

-Pattern level : 0.7 ± 0.1 Vp-p

-Image

3.1.3. Adjustment

(1)Adjustment method

▪Don’t need to adjust ADC because there is data in OTP and adjusted initially.

▪Check ADC adjustment

1)Press In start key on the Adj. Remote Control, then Adjust ADC(OTP) status is displayed on “1.Adjustment check”. Select “2.ADC Data”, then ADC data is displayed.

2)Press Adj. key on the Adjustmetn Remote Control, and select “9.ADC Calibration”. Set up the ADC Type to OTP, then Select [Start] button by pressing Enter key, Component and RGB are Writed and display Success or NG.

(2)Adj. protocol

Protocol	Command	Set ACK
Enter adj. mode	aa 00 00	a 00 OK00x
Source change	xb 00 04	b 00 OK04x (Adjust 480i, 1080p Comp1 )
	xb 00 06	b 00 OK06x (Adjust 1920*1080 RGB)
Begin adj.	ad 00 10
Return adj. result		OKx (Case of Success)
		NGx (Case of Fail)
	(main)	(main)
	ad 00 20	000000000000000000000000007c007b006dx
Read adj. data
	(sub )	(Sub)
	ad 00 21	000000070000000000000000007c00830077x
		NG 03 00x (Fail)
Confirm adj.	ad 00 99	NG 03 01x (Fail)
		NG 03 02x (Fail)
		OK 03 03x (Success)
End adj.	aa 00 90	a 00 OK90x

Ref.) ADC Adj. RS232C Protocol_Ver1.0

(3)Adj. order

-aa 00 00 [Enter ADC adj. mode]

-xb 00 04 [Change input source to Component1 (480i& 1080p)]

-ad 00 10 [Adjust 480i&1080p Comp1]

-xb 00 06 [Change input source to RGB(1024*768)]

-ad 00 10 [Adjust 1920*1080 RGB]

-ad 00 90 End adj.

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