This spec. sheet applies to LA01T Chassis applied LCD TV all models manufactured in TV factory.
2. Specification LG 22LV2500-UA TV Service Menu
2.1 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.
2.2 Adjustment must be done in the correct order.
2.3 The adjustment must be performed in the circumstance of 25±5°C of temperature and 65±10%
of relative humidity 2.4 The input voltage of the receiver must keep 100~240V~, 50/60Hz.
2.5 At first Worker must turn on the SET by using Power Only key.
2.5 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 a still image is displayed for 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. Adjustment items
3.1 Board Level Adjustment
(1) Adjust 480i Comp1(ADC)
(2) EDID/DDC download
• Remark LG 22LV2500-UA TV Service Menu
- Above adjustment items can be also performed in Final Assembly if needed. Adjustment items in both PCBA and final assembly stages can be checked by using the INSTART Menu 1.ADJUST CHECK.
3.2 Final Assembly adjustment
(1) White Balance adjustment
(2) RS-232C functionality check
(3) Factory Option setting per destination
(4) Shipment mode setting (IN-STOP)
3.3 Etc
(1) Ship-out mode
(2) Service Option Default
(3) USB Download(S/W Update, Option, Service only)
(4) ISP Download (Optional)
4. Board Level Adjustment
4.1. ADC Adjustment
4.1.1. Overview
• ADC adjustment is needed to find the optimum black level and gain in Analog-to-Digital device and to compensate RGB deviation.
4.1.2. Equipment & Condition
1) Jig (RS-232C protocol)
• Required equipment : Adjustment R/C LG 22LV2500-UA TV Service Menu
*Enter Service Mode by pushing “ADJ” key,
*Enter Internal ADC mode by pushing “G” key at “6. ADC
Calibration”
4.1.3. Adjustment
4.1.3.1 Adjustment method
• Using RS-232, adjust items listed in 3.1 in the other shown in “4.1.3.3”
4.1.3.2 Adj. protocol
Protocol
Command
SetACK
Enter adj. mode
aa 00 00
a 00 OK00X
Source change
xb 00 40
b 00 OK40X (Adjust 480i/1080p Comp1)
xb 00 60
b 00 OK60X (Adjust 1920*1080 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.
NG 03 00x (Fail)
NG 03 01x (Fail)
NG 03 02x (Fail)
ad 00 99
OK 03 03x (Success)
End adj.
aa 00 90
a 00 OK90X
Ref.) ADC Adj. RS232C Protocol_Ver1.0
4.1.3.3. Adj. order
• aa 00 00 [Enter ADC adj. mode]
• xb 00 40 [Change input source to Component1(1080i)]
• 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.
4.2. EDID/DDC Download
4.2.1 Overview
• It is a VESA regulation. A PC or a MNT will display an optimal resolution through information sharing without any necessity of user input. It is a realization of “Plug and Play”.
4.2.2 Equipment
• Since embedded EDID data is used, EDID download JIG,
HDMI cable and D-sub cable are not need.
• Adjust remocon LG 22LV2500-UA TV Service Menu.
4.2.3 Download method
1) Press Adj. key on the Adj. R/C,
2) Select EDID D/L menu.
3) By pressing Enter key, EDID download will begin
4) If Download is successful, OK is display, but If Download is failure, NG is displayed.
5) If Download is failure, Re-try downloads.
* Caution) When EDID Download, must remove RGB/HDMI
Cable.
4.2.4 EDID DATA
1) North America
# HDMI1-EDID (C/S : 03CC)
EDID Block 0
LG 22LV2500-UA TV Service Menu
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Universal Remote - Service Mode - TV Factory menu codes
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LG LG 22LV2500-UA TV Service Menu
This spec. sheet applies to LA01T Chassis applied LCD TV all models manufactured in TV factory. When a still image is displayed for 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. Written on April 10, 2020