LG Electronics 47LE7300 Adjustment Instruction, Application Range, Designation, ADC Adjustment

ADJUSTMENT INSTRUCTION

1. Application Range

This specification sheet is applied to all of the LCD TV with LD03E 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 ºC ± 5 ºC 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 / 60Hz.

(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

(1)Overview

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

(2)Equipment & Condition

1)Jig (RS-232C protocol)

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

pattern - 65)

-Resolution : 480i Comp1 1080P Comp1 1920*1080 RGB

-Pattern : Horizontal 100 % Color Bar Pattern

-Pattern level : 0.7 ± 0.1 Vp-p

-Image

(3)Adjustment

1)Adjustment method

-Using RS-232, adjust items listed in 3.1 in the other shown in “3.1.(3).3)”

2)Adj. protocol

Protocol	Command	Set ACK
Enter adj. mode	aa 00 00	a 00 OK00x
Source change	xb 00 40	b 00 OK40x (Adjust 480i Comp1 )
	xb 00 60	b 00 OK60x (Adjust 1024*768 RGB)
Begin adj.	ad 00 10
Return adj. result		OKx (Case of Success)
		NGx (Case of Fail)
Read adj. data	(main)	(main)
	ad 00 20	000000000000000000000000007c007b006dx
	(sub)	(Sub)
	ad 00 21	000000070000000000000000007c00830077x
Confirm adj.	ad 00 99	NG 03 00x (Fail)
		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 40 [Change input source to Component1(480i)]

-ad 00 10 [Adjust 480i Comp1]

-xb 00 60 [Change input source to RGB(1024*768)]

-ad 00 10 [Adjust 1024*768 RGB]

-ad 00 90 End adj.

3.2.MAC Address

(1)Equipment & Condition

-Play file: Serial.exe

-MAC Address edit

-Input Start / End MAC address

(2)Download method

1) Communication Prot connection

PCBA PC(RS-232C)

RS-232C Port

Connect: PCBA Jig-> RS-232C Port== PC-> RS-232C Port

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