LG Electronics 55LA970V/W/9-ZA Adjustment Instruction, Designation, Automatic Adjustment

ADJUSTMENT INSTRUCTION

1. Application Range

This specification sheet is applied to all of the LED TV with LD34N 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 : 480i Comp1

1080P Comp1

1920*1080P SCART RGB

-Pattern : Horizontal 100% Color Bar Pattern

-Pattern level : 0.7 ± 0.1 Vp-p

-Image

3.1.3. Adjustment

(1)Adjustment method

-Using RS-232, adjust items 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 04	b 00 OK04x (Adjust 480i, 1080p Comp1 )
	xb 00 06	b 00 OK06x (Adjust 1920*1080 SCART RGB)
Begin adj.	ad 00 10
Return adj. result		OKx (Case of Success)
		NGx (Case of Fail)
	(main)	(main)
Read adj. data	ad 00 20	000000000000000000000000007c007b006dx
	(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 SCART RGB]

-ad 00 90 End adj.

3.2.MAC address D/L, CI+ key D/L, Widevine key D/L, ESN key D/L, HDCP key D/L,

DTCP key D/L

Connect: PCBA Jig → RS-232C Port== PC → RS-232C Port Communication Prot connection

▪Com 1,2,3,4 and 115200(Baudrate) Mode check: Online Only

▪Check the test process: DETECT → MAC → CI → Widevine → ESN → HDCP → DTCP

▪Play: START

▪Result: Ready, Test, OK or NG

▪Printer Out (MAC Address Label)

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