LG RD-JT91 Service Manual page 16

6. RGB Offset/Gain Adjustment
6-1. Required Test Equipment
(1) Pattern Generator 1EA (For analog RGB)
(2) Remote control 1EA
6-2. Setting of the device
Set the equipment as <Fig. 6-1>.
SCREEN
<Fig.6-1> Device setting diagram for RGB offset/gain adjustment
6-3. Preparation for Adjustment
(1) Connect the pattern generator as <Fig. 6-1>.
(2) Adjust pattern generator to SVGA 60Hz.
(3) Press the Input selection button to select the RGB input.
6-4. Sequence of Adjustment
(1) Select the white/back pattern for pattern generator as
<Fig. 6-2>. (SVGA 60Hz)
<Fig.6-2> Window Pattern
(2) Press the instart button on the service remote control to
select RGB offset/gain set in Adjustment menu.
(3) Automatic Adjustment : Press the enter button in RGB
offset/gain set of Adjustment menu. (Adjustment is
operated by system Micom automatically)
RGB
Projector
PC Pattern
Generator
7. COMPONENT Offset/Gain Adjustment
(1) Select 75% color bar of <Fig. 7> for PC Pattern Generator
pattern. (Resolution 480p)
(2) Press the instart button on the remote control to select
component offset/gain set in the adjustment menu.
(3) Automatic Adjustment : Press the enter button in
component offset/gain set of Adjustment menu.
(Adjustment is operated by system Micom automatically)
[ [ . CWI/White Balance Measurement
Condition
(1) CWI and White Balance is adjusted using a CL-200 or
equivalent.
(2) Adjust the screen size to a minimum of 40 inches.
(3) Place the CL-200 on the center of projection screen.
(4) Make the measurement condition under 1Lux for CL-200
to measure the correct color coordinate.
8. CWI Adjustment
8-1. Setting of the Device
Set the equipment as <Fig. 8-1>.
SCREEN
<Fig.8-1> Device setting diagram for CWI adjustment
8-2 Required Test Equipment
(1) Illuminometer (Model : CL-200) 1EA : Chromaticity
measurement from projection screen center.
(2) PC input equipment (Pattern Generator, PC)
(3) Set fixing device 1EA
(4) Remote control 1EA
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<Fig. 7>
Illuminometer
Equipment to monitor Lx,X,Y data
Set
PC input
(Computer of Pattern)
Set fixing device