Zenith D52WLCD Series Service Manual page 40

(3) Horizontal Position Adjustment
1) Press In-START key on the SVC remote control to enter
the adjustment mode.
2) Select 1. RGB Alignment.
3) Select 1. H_position with channel key in adjust mode.
4) Adjust data with using the left/right key on the remote con-
trol in order to be left/right semmetry screen. (Three blocks
of the most outer block must be located the most outer
block.)
(4) Adjustment for Vertical Position
1) Select 2. V_position with channel key in adjust mode.
2) Change the data to symmetrized top and bottom of
screen(refer to Fig. 4) and then press the IN-START but-
ton on SVC Remote Control to get out of adjustment
mode.
(Fig. 4) Adjustment for Horizontal/Vertical Position on Screen
5-3. Component2 Offset Adjustment
(1) Required Test Equipment
A remote control for adjustment, 801GF
(2) Preparation for Adjustment
1) Connect a power source with TV Set and turn TV Set on.
2) Do heat run for 5 min and over before adjustment.
3) Receive the Component2.
4) Receive the 720P and HozTVBar Pattern of 801GF.
HozTVBar Pattern
(3) Offset Adjustment
1) Press IN-START key on the SVC Remote Control to enter
the adjustment mode after more than 10 seconds of
receiving the signals.
2) Press 5. AD9883 adjust to adjust .
3) When the AD9883 Gain Adjust has appeared after AD9883
Offset Adjust, the adjustment is completed.
D52WLCD
ADJUSTMENTS
US13CH
40
(4) Component & RGB Mode White Balance Adjustment
Do this adjustment when it is needed.(When there is severe
white balance gap in low level of AV input contrast.
1) Observe the white balance condition of low level(2-6 Gray
Level) after inputting 16 Gray pattern with RGB or compo-
nent input. - Do adjustment when there is difference with
High level white balance in AV contrast or 16 Gray.
2) Press the ADJ key on R/C for adjustment to select 4.
AD9883A.
5. Red Offset and 7. Blue Offset are adjustable.
3) Adjust 5. Red Offset/7. Blue Offset value while watching
the screen and then make manual white balance correc-
tion in Low level.
(5. Red Offset -- Adjustment range !2step, 7. Blue Offset -
- Adjustment range !4step)
Note: 1 step change on R/C corresponds to 2 changs of data
while adjusting Offset.
5-4. Adjustment of White Balance and Gamma
(1) Required Test Equipments
1) Illuminometer (name of model : CA-100) 1EA —>
Measure color 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-100
and 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 form 0 to 255 level.
(2) A equipment composition
Adjust at the same condition of equipment composition diagram.
(3) Preparation for Adjustment
Connect the equipment follow Fig. 2 and place the set on the
fixation stand.
1) Select the VDP Test Pattern signal to R1, G1, B1.
2) Press the IN-START key on SVC remote control to select
2.62352 and then select 5.RVREF, 8.GVREF, 12.BVREF
in adjust mode.
3) Adjust the luminance of CA100 below 0.75Cd. (The adjust-
ment range is 196~202)
4) Exit adjustment mode by pressing IN-START button on
SVC Remote Control.
5) Press the IN-START key on SVC remote control and select
3.7050 RGB Set.
6) Check the data 1.RContrast, 8.GContrast, 15.BContrast is
515. Otherwise set the data 515 by using volume button.
ADJUSTMENTS