JVC pd-42dxt, Service Manual

PD-42DXT

(No.52108)1-5

1.3 PRECAUTIONS DURING NOTES FOR TRANSPORTATION

When transporting the display unit, pressure exerted on the
internal PDP (Plasma Display Panel) due to improper handling
(such as tossing and dropping) may cause damages even when
the unit is carefully packed. To prevent accidents from occurring
during transportation, pay careful attention prior to delivery such
as through explaining the handling instructions to transporters.
Ensure that the following requirements are met during
transportation, as the PDP of this unit is made of glass and
therefore fragile:

(1) Avoid vibrations and impacts

The unit may be broken if it is toppled sideways even when
properly packed. Ensure that the unit is carried by at least
2 persons and pay careful attention not to exert any
vibration or impact on it.

(2) Do not place equipment horizontally

Ensure that it is placed upright and not horizontally during
transportation and storage as the PDP is very vulnerable to
lateral impacts and may break easily under such
circumstances.
During transportation, ensure that the unit is loaded along
the traveling direction of travel of the vehicle, and avoid
stacking them on one another.
For storage, ensure that they are stacked in 2 layers or less
even when placed upright.

1.4 RESIDUAL IMAGE / BURN-IN ON SCREEN

Like CRTs, ‘burn-ins’ may occur when a same image is
continuously displayed over an extended period of time.
As Tthis may also shorten the life span of the PDP. Therefore,
turn off the display when not in use, scroll the screen, make use
of screen-savers, or allow even distribution on the display by
inverting the brightness, switching to complementary colors or
inserting animated images at periodic intervals.
As burn-in is more likely to occur with high brightness and
contrast settings, try to use neutral gradations or medium tone
colors.
Burn-in does not occur in the case of animated images.
When switching to another image after continuous display of the
previous image, residual images may become prominent, as
luminance in a part of the display is higher than the other parts.
This is not a defect but is because due to the discharge surface
of the lighted portion has becomebeing relatively activated and
its luminance higher than the unlighted parts. 

1.5 INFRARED RAYS

Near Near-infrared rays (800nm to 1000nm) are emitted from the
front of the panel, and this may give rise to glitchescause
malfunctions in infrared remote controls or communication
systems placed near it. In this case, avoid direct infrared rays
(and reflected rays in some cases) from the screen by either
changing the direction of the unit or other infrared systems or
securing a longer keeping a distance from the screen.

1.6 OPTICAL FILTER (PANEL FILTER)

Avoid placing the unit under direct sunlight over a prolonged
period of time. This may cause the optical filter to deteriorate in
quality and color.
Clean the filter surface by wiping it softly lightly with outing
flannels a soft and lightly fuzz cloth (such as flannel).
Do not use solvents such as benzine or thinner to wipe the filter
surface. This may cause the filter to deteriorate in quality or the
coating on the surface to come off.
As Tthe filter surface is fragile., Ddo not scratch or hit it with hard
materials. 

1.7 NOTES PRECAUTIONS FOR REPLACEMENT OF EXTE-

RIOR PARTS

Take note of the following when replacing exterior parts (back
REAR COVER, FRONT PANEL, optical filter):
Do not exert pressure on the front of the PDP (glass surface).
Pay careful attention not to scratch or stain the front of the PDP
(surface) with hands.
When replacing exterior parts, the front of the PDP should be
placed facing downward. Place a mat, etc. underneath to avoid
causing scratches to the front surface.
However, never use materials that are too soft (such as blanket
cloth). If replacement is made with the PDP surface facing
downward and in contact with the blanket, pressure may be
exerted on the PDP, thus causing damages to it.