Required Equipment - LG MU-42PM11 Service Manual

6-4. Sequence of Adjustment
(1) DDC Data Input for Analog-RGB
1) Put the set on the table and turn the power on.
2) Connect PC Serial to D-sub 15P Cable of jig for DDC
adjustment to RGB terminal (D-Sub 15Pin).
3) Operate S/W for DDC record and select DDC data for
Analog RGB in Model Menu.
4) Operate EDID Write command.
5) Operate EDID Read command and check whether
Check Sum is as below.
MU-42PM11: CB
MU-42PM12X/MU-50PM10: DC
6) If Check Sum is not CB(or DC), repeat 3) ~ 4).
7) If Check Sum is CB(or DC), DDC data for Analog-RGB
input is completed.
(2) DDC Data input for Digital-RGB(DVI)
1) Connect PC Serial to DVI Cable of jig for DDC
adjustment to DVI terminal (DVI Jack).
2) Operate S/W for DDC record and select DDC data for
digital RGB in model menu.
3) Operate EDID Write command.
4) Operate EDID Read command and check whether
Check sum is as below.
MU-42PM11: 4A
MU-42PM12X/MU-50PM10: CD
5) If Check sum is not 4A(or CD), repeat 3) ~ 4).
6) If Check sum is 4A(or CD), DDC data for Analog-RGB
input is completed.
7. Adjustment of White Balance

7-1. Required Equipment

Color Analyzer (CA-100 or similar product)
7-2. Connection Diagram of Equipment for
Measuring
High
1/4 H
160 gray
Low
1/4 H
80 gray
1/4 W
RS-232C Serial Communication
(Fig. 11) White Balance Adjustment
ADJUSTMENT INSTRUCTIONS
COLOR ANALYZER
TYPE; CA-100
DVI Signal Input
XGA 60Hz Signal
Window
MSPG-2100 or
MSTG-5200
- 11 -
7-3. Adjustment of White Balance
Operate the Zero-calibration of the CA-100, then stick
O
sensor to PDP module surface when you adjust.
Manual adjustment is also possible by the following
O
sequence.
(1) Select white pattern of heat-run mode by pressing power
key on the Service Remote Control (S R/C) then allow to
heat run at least 15 minutes.
(2) Supply Window Pattern signal to DVI input using Pattern
Generator.
1) Input Signal: XGA 60Hz
2) Input the Window Pattern(Horizontal 25%, Vertical
50%(Top High 25% + Bottom Low 25%))
(Refer to Fig. 11)
(3) Press the FRONT-AV KEY on R/C for converting input DVI
mode.
(4) Press ADJ key twice on S R/C. (White Balance)
(5) High Adjustment
Stick sensor to center of 160 Gray Level(High Window
Pattern), select Red Gain and Green Gain using
on S R/C.
Press VOL +, - keys to adjust until color coordination
matches below.
X; 0.285±0.003, Y; 0.285±0.003
(6) Low Adjustment
Stick sensor to center of 80 Gray Level(Low Window
Pattern), select Red Offset and Green Offset using
key on S R/C.
Press VOL +, - keys to adjust until color coordination
matches below.
X; 0.285±0.006, Y; 0.285±0.006
(7) Repeat above step (5) and (6) for the best condition of
High and Low.
(8) Exit adjustment mode using
8. Auto Component Color Balance
8-1. Required Test Equipment
Pattern Equipment: MSP3240A or similar product
(16 Gray Scale Pattern output(Component output Level:
0.7Vp-p)
8-2. Method of Auto RGB Color Balance
(1) Input RGB Source : Component 720p 16 Gray Scale
Pattern
At this time, input the Y, Pb and Pr signal.
(2) Press ADJ KEY on the S R/C.
(3) Press Vol. + KEY and operate To set.
(4) Auto-RGB OK means completed adjustment.
D E
, key
D
,
A
Key.
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