Hyundai HLT-1751, Service Manual

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2.9 As most of the circuitry in LCD TV set is composed of CMOS integrated circuits, it’s
necessary to pay attention to anti statics. Before servicing LCD TV make sure to take
anti static measure and ensure full grounding for all the parts that have to be grounded.
2.10 There are lots of connection wires between parts behind the LCD screen. When
servicing or moving the set please take care not to touch or scratch them. Once they
are damaged the screen would be unable to work and no way to get it repaired.
2.11 Special care must be taken in transporting or handling it. Exquisite shock vibration
may lead to breakage of screen glass or damage to driving circuit.
Therefore it must be packed in a strong case before the transportation or handling.
2.12 For the storage make sure to put it in a place where the environment can be controlled
so as to prevent the temperature and humidity from exceeding the limits as specified in
the manual. For prolonged storage, it is necessary to house it in an anti-moisture bag
and put them altogether in one place. The ambient conditions are tabulated as follows:
Temperature Scope for operation
0—+50 C
Scope for storage
-20—+60 C
humidity Scope for operation
20%—85%
Scope for storage
10%—90%
2.13 Display of a fixed picture for a long time may result in appearance of picture residue on
the screen, as commmonly called “ghost shadow”. The extent of the residual picture
varies with the maker of LCD screen. This phenonmenon doesn’t represent failure.
This “ghost shadow” may remain in the picture for a period of time (several
minutes).But when operating it please avoid displaying still picture in high brightness
for a long time.
3. Points for attention during installation
3.1 The front panel of LCD screen is of glass. Wheng installing it please make sure to put it
in place.
3.2 For service or instatallation it’s necessary to use specified screw lest it should damage
the screen.
3.3 Be sure to take anti dust measures. Any foreign substance that happens to fall down
between the screen and the glass will affect the receiving and viewing effect
3.4 When dismantling or mounting the protective partition plate that is used for anti vibration
and insulation please take care to keep it in intactness so as to avoid hidden trouble.
3.5 Be sure to protect the cabinet from damage or scratch during service, dismantling or
mounting.
Instructions on adjusting and testing
1. Flow process of adjustment and calibration
For flow process of adjustment and calibration, see Fig. 1