Adjustment Instructions - Zenith D52WLCD Series Service Manual

1. Application Object
This instruction is for the application to the LCD projection TV.
2. Notes
(1) The power supply for this unit is not to be used as an iso-
lation transformer.
(2) The adjustment must be performed under the correct
sequence.
(3) The adjustment must be performed an environment
25!5°C of temperature and 65!10% of relative humidity if
there is no specific designation.
(4) The input voltage of the receiver must keep 100V, 60Hz in
adjusting.
(5) The set must be operated for 5 minutes preliminarily
before adjustment if there is no specific designation.
The preliminary operation must be performed after receiv-
ing 100% white pattern, but reception of the moving pic-
ture may also be possible in unavoidable case.
3. Composition of Adjustment Mode
(1) All adjustment mode are entered by pressing the IN-
START key on the SVC remote control, after adjustment
press the IN-START key to exit.
(2) Composition of adjustment mode: The first screen compo-
sition of pressing IN-START key on the SVC remote con-
trol.
EZ ADJUST V*.**
1. RGB Alignment
2. 62352
3. Gamma Adjust
4. Uniformity Adj
5. AD9883 Adjust
6. Lamp Replace
(fig. 1) The first screen of adjustment mode
(3) Select menu to adjust(turn to yellow) with using CH D, E
key above screen and press the enter key to adjust on the
wanting menu.
(4) After being inputed for SUB menu, select the SUB menu
with using CH D, E key and adjust the value of adjust-
ment with using the volume F, G key.
(5) Press the IN-START key to exit after adjustment, when
(fig.1) appears, press again to exit the final adjustment
mode.
(6) SUB menu composition of each adjustment mode
Adjust Mode : RGB Alignment
10. H_Position
Micom:V0.50 SubMicom:V01.31
1) Adjust Mode : Sub adjustment menu selected by IN-
START key.
RGB alignment is selected in this case.

ADJUSTMENT INSTRUCTIONS

Step 123:1
315/315/315
LCDMicom:V01.31 Lamp:16
2) Step123 : Step selection when changing data.
ex) Step123:1 --> Change one by one when changing
data with Volume key
Step123:10 --> Change ten by ten when changing data
with Volume key
You can select 1 by press number key '1', 10 by press
'12', 100 by press '123'. And you can change data by
1, 10, 100.
3) 10. H_position 315/315/315 : Actual adjusting menu.
4) Micom : V0.50 : Main Micom Version display of Digital
board.
5) SubMicom : V01.31 : Micom Version display of Tuner
board.
6) LCDMicom : V01.31 : Micom Version display of Drive
board.
7) Lamp : 16 : Lamp time display.
4. LCD Adjustment
4-1. NRS Adjustment
[ When the LCD panel load data on regular pixel using high
speed charge/discharge with sample & holder, the drain
width of TFT gradually decreases and the non-resistance
increases, and comes out regular noise on screen(shows
vertical line by 12 pixel)
This NRS signal is enforced charge/discharge signal so
that the ON/OFF time of TFT mode quickly before starting
active video signal, H/L level adjustment is possible to
each R, G, B.
(1) Required Test Equipments
1) PC Pattern Generator : 16 Step Gray Pattern
2) Fixation Stand
3) Remote Control for Adjustment
4) Circuit Jig for Adjustment(Except Driver Board Assy)
(2) Equipment Composition :
(3) Preparation for Adjustment
1) Connect PC Pattern Generator with adjustment Jig like
Fig. 2. (Except Drive part of a circuit block)
2) Select a PC Pattern Generator, 16 Gray.
(4) Adjustment Sequence
1) Turn on adjustment Jig.
2) Select a RGB_PC by pressing Input Select button on
Remote Control.
3) Enter adjustment mode by pressing IN-START button on
SVC Remote Control.
4) Select No. 6(62352), adjust No. 6(RNRSH), No.
9(GNRSH) and No. 11(BNRSH).
5) Decrease vertical line by using Volume button.
(Input a R, G, B input signal, then adjust it individually)
6) When finishing the adjustment, exit adjustment mode by
pressing IN-START button on SVC remote control.
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Follow Fig. 2