LG RT-44SZ80LB Service Manual page 15

Optical measuring equipment
TV
Set
<Fig2-2. TV set status Adjustment>
Fig2 Device Configuration Diagram
<
(3)Preparation for Adjustment
1) Connect the PC PATTERN GENERATOR, circuit for
adjustment and adjustment JIG as shown <Fig 2>.
2) Adjust output pattern of PC PATTERN GENERATOR to
possible display and then turn on the power.
(4) Adjustment Sequence
1) Turn on the adjustment Jig
2) Select RGB_PC by pressing input Select Key on Remote
control.
3) Enter to adjustment mode by pressing Adjust key on
Remote control.
4) Select the Ô62352Õ, then ready to adjust 4. RVCOM, 7.
GVCOM, 10.BVCOM
5) LetÕs decrease flicker by using Volume key
(Input a R, G, B input signal, then adjust it individually)
6) When finishing the adjustment, get out of adjustment mode
by pressing Adjust key
5. Screen Position Adjustment
(Horizontal/Vertical Position Adjustment)
5-1. Required Test Equipment
Remote control for adjustment.
5-2. Preparation for Adjustment
(1) Connect a power source with TV Set and turn TV Set on.
(2) Do heat run for 15 min or more before adjustment.
(3) Receive the main/sub signal of company through EU05CH
by split screen.
(4) Adjust screen ratio to 16:9 by pressing ARC Key.
5-3. Horizontal Position Adjustment
(1) Press ADJ Key on the remote control to enter the
adjustment mode.
(2) Select 2. Position.
(3) Select H_Position by using the channel key in adjust
mode.
(4) Adjust data by using Volume key on the remote control in
order to be left/right symmetry screen.(Three blocks of the
most outer block must be located in the most outer
block.)(Refer to Fig3)
5-4. Vertical Position Adjustment
(1) Select Y_Position with channel key in adjust mode.
(2) change the data to become symmetrized on the top and
bottom of the screen(Refer to Fig3) by pressing the
Volume key on Remote Control.
Adjustment
Jig
Connector for
RS-232C
Adjustment
Cable
PC Pattern
Generator
>
PC
A
<Fig3. Adjustment for H/V Position on Screen>
6. Component Offset Adjustment
(1) Required Test Equipments :
A remote control for adjustment, 802F
(2) Preparation for Adjustment
1) Connect a power source with TV Set and turn TV set on.
2) Do Heat-Run for 15 minutes and over before adjustment.
3) Receive the Component 2.
4) Receive the 720P, Hoz30Bar Pattern of 802F
(3) Offset/ Gain Adjustment
1) Press Adjust key on the remote control to enter the
adjustment mode after more than 10 seconds of receiving
the signals.
2) Press ÒAD9883 A-setÓ to adjust.
3) When the OSD of ÒAD9883 Adjust EndÓ appeared and
disappears,The adjustment is completed
7. White Balance & Gamma Adjustment
(1) Required Test Equipments
1) CA100 : 1EA
-> Measure colour of projecting screen center
[CA-110(name of model) is possible to measure White
Balance and Gamma - leave it 20Cm from screen center
Follow a measurement machine manual to set CA-100and
CA-110 measurement machine.]
2) pattern Generator : 1EA -> 16 step Gray Pattern, 64 step
Gray Pattern
3) SET Fixation Stand : 1EA
4) Remote control : 1EA
5) Circuit thing Jig for adjustment (Except Drive Board Assy of
adjustment model)
--- Programmed Digital Board so that the VDP Test Pattern
can output white signal by 1 level from 0 to 255 level.
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B
<Hoz30Bar Pattern>