White Balance Adjustment - LG 55LV355C-UA Service Manual

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.
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
Block1
# HDMI2-EDID (C/S : 03BC)
Block0
Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes
Block1
# RGB-EDID (C/S : 1C)
Block0
5. Final Assembly Adjustment

5.1. White Balance Adjustment

5.1.1. Overview
5.1.1.1. W/B adj. Objective & How-it-works
(1) Objective: To reduce each Panel's W/B deviation
(2) How-it-works: When R/G/B gain in the OSD is at 192, it
means the panel is at its Full Dynamic Range. In order to
prevent saturation of Full Dynamic range and data, one of
R/G/B is fixed at 192, and the other two is lowered to find
the desired value.
(3) Adj. condition: normal temperature
1) Surrounding Temperature: 25±5°C
2) Warm-up time: About 5 Min
3) Surrounding Humidity: 20% ~ 80%
5.1.2. Equipment
(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH12 / LED:
CH14)
(2) Adj. Computer (During auto adj., RS-232C protocol is
needed)
(3) Adjust Remocon
(4) Video Signal Generator MSPG-925F 720p/204-Gray
(Model: 217, Pattern: 49)
• Color Analyzer Matrix should be calibrated using CS-1000
- 11 - LGE Internal Use Only