50PB2RRH-TL (CHASSIS:MF-056L) - LG TV Service Manual (repair manual). Page 12

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6) HDMI/DVI EDID data(check sum : DC37)
7) RGB EDID data(check sum : B4)
12. Adjustment of White Balance
12-1. Required Equipment
1) Remote controller for adjustment.
2) Color Analyzer.(CA-100 or same product)
3) Auto W/B adjustment instrument.(only for Auto adjustment)
4) AV Pattern Generator.
12-2. Connecting diagram of equipment for
measuring (For Auto Adjustment)
W
Auto adjustment Map(RS-232C)
12-3. Adjustment of White Balance
(For Manual adjustment)
O
Operate  the  zero-calibration  of  the  CA-100,  then  stick
sensor to PDP module surface when you adjust.
O
For  manual  adjustment,  it  is  also  possible  by  the  following
sequence.
1)  Select  white  pattern  of  heat-run  mode  by  pressing  power
on key on remote control for adjustment then operate heat
run more than 15 minutes.
2)  As  below  Fig.18,  Supply  216Level  (85  IRE)  full  screen
pattern to Video input.
(50PB2RR-TL : AV1/AV2, Press the Front AV key->AV2) 
3) Press the TV/AV KEY on R/C for converting input mode.
4) Set the PSM to Standard mode in Picture menu.
5) Enter the White Balance adjustment mode by pressing the
IN-START key twice(White Balance) on R/C.
6) Stick sensor to center of the screen and select each items
(Red/Green/Blue Gain and Offset) using 
D
/
E
(CH +/-) key on R/C.
7)  Adjust  Only  High  Light  with  R  Gain/  B  Gain  using 
F
/
G
(VOL+/-) key on R/C.
8) Adjust it until color coordination becomes as below.
(Initially, R/G/B gain and R/G/B offset values are fixed as below
Red Gain   : 82,
Green Gain   : 80,
Blue Gain   : 86
Red Offset : 7F,
Green Offset : 7E,
Blue Offset : 82)
9)  When  adjustment  is  completed,  Exit  adjustment  mode
using EXIT key on R/C.
M SPG-
M STG- 5 2 0 0
216 Level (85 IRE)
216 Level (85 IRE)
COLOR 
COLOR ANAL
ANALYZER
YZER
TYPE ; CA-100
TYPE ; CA-100
CVBS
CVBS
signal
signal
input
input
RS-232C Serial Communication
925
Pattern Generator
Pattern Generator
/
(Fig. 17) Connection Diagram of Auto W/B Adjustment
Type
Baud Rate
115200
Index
R Gain
G Gain
B Gain
R Offset
G Offset
B Offset
Data bit
8
Cmd1 Cmd2
j
a
j
b
j
c
j
d
j
e
j
f
Stop bit
1
Parity
NONE
MF-056L
Protocol
Setting
Data
Min Value
00(00)
00(00)
00(00)
00(00)
00(00)
00(00)
Max Value
255(FF)
255(FF)
255(FF)
255(FF)
255(FF)
255(FF)
(Fig. 18) Pattern for Adjustment of White Balance
216 Level (85 IRE)
216 Level (85 IRE)
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