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1. Application Object
This instruction is for the application to the LCD projection
TV(MB-042B Chassis).
2. Notes
(1) The power source insulation of this LCD Projection TV is not
charging type and you may not use the transformer for insula-
tion. But you better adjust the set after operating it with insula-
tion transformer between power supply cable and input part of
the set for protecting the adjusting equipment.
(2) The adjustment must be performed under the correct
sequence.
(3) The adjustment must be performed in the circumstance of
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 120V, 60Hz in
adjusting.
(5) The set must be operated for 15 minutes preliminary before
adjustment if there is no specific designation.
The preliminary operation must be performed after receiving
100% white pattern, but reception of the moving picture may
also be possible in unavoidable case.
3. Composition of Adjustment Mode
(1) All adjustment mode are entered by pressing the ADJ key on
the remote control, after adjustment press the ADJ key to
come out.
(2) Composition of adjustment mode: The first screen composi-
tion of pressing ADJ key.
EZ ADJUST
1. M62352
2. Position
3. AD9883A-set
4. GAMMA
5. Uniformity
6. CONTRAST
7. RGB Alignment
8. System Option
9. Lamp Replace
(Fig. 1) The First Screen of Adjustment Mode
(3) Select menu to adjust(turn to yellow) with using (CH+(D),
CH-(E)) key above screen and press the enter key to adjust
on the wanting menu.
(4) After being inputted for SUB menu, select the SUB menu with
using (CH+(D),CH-(E)) key and adjust the value of adjust-
ment with using the volume +(F),volume - (G) key.
(5) Press the ADJ key to come out after adjustment.
ADJUSTMENT INSTRUCTIONS
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 thing 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 a adjustment Jig.
2) Select a RGB_PC by pressing Input Select button on Remote
Control.
3) Enter to adjustment mode by pressing ADJ button on Remote
Control.
4) Select 1. M62352, then ready to adjust RRefV1, GRevV1 and
BRefV1.
5) Let's decrease vertical line Noise by using Volume button.
(Input a R, G, B input signal, then adjust it individually)
6) When finishing the adjustment, get out of adjustment mode by
pressing ADJ button.
4-2. VCOM Adjustment
(1) Required Test Equipments
1) PC PATTERN GENERATOR : Pattern Generator which can
generate each R,G,B signal and can observe the FLICKER
best(ex: me Character Pattern).
2) (Fig. 2) Equipment composition
3) Remote Control
4) Circuit thing Jig for Adjustment(Except Driver Board Assy of
adjustment model)
- 12 -
Follow Fig. 2
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