JVC DLA-HD550-BC, Service Manual

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1-6 (No.PA037<Rev.001>)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 NEW TECHNOLOGY
2.1.1 JVC’s original picture modes
Recreating the quality of film in movie theaters with every nu-
ance reproduced was what JVC had in mind when we
equipped our D-ILA front projector models with original picture
modes. Colors displayed by projectors and those found in film
are processed differently as projectors display colors using an
additive color mixture method where RGB primary colors are
layered on top of each other. On the other hand, film in movie
theaters use a subtractive color mixture method that filters
CMY colors out of the light source. With the additive color mix-
ture method, colors become brighter as colors are added and
due to an increase in energy, eventually turn white.
However, the opposite can be said for the subtractive color
mixture method where colors become darker and eventually
turn black. JVC engineers thoroughly analyzed the two meth-
ods and succeeded in developing an optimized picture display
by performing advanced processing using a built-in LSI. So
this means that now what was once difficult to reproduce in the
home environment such as the delicate textures and nuances
of film can now be seen just like at a movie theater.
2.1.2 Screen Adjustment Mode
As the quality of projected images may vary slightly depending
on the type of screen and its RGB reflective characteristics,
JVC’s new D-ILA projectors have screen adjustment modes
that allow users to select the optimum mode to match screen
characteristics for more natural and balanced color reproduc-
tion.
2.1.3 High Performance 2x motorized zoom lens
The high-performance 2x zoom lens with motorized focus fea-
tures a large-diameter lens system to ensure the projection of
full HD images with exceptional depth.
And to display the deepest black possible, this lens is also
equipped with a 16-step* lens aperture that enables adjust-
ment of brightness according to user preferences and operat-
ing environments.
2.1.4 Advanced video processor
Both projectors incorporate the HQV Reon-VX video proces-
sor developed by Silicon Optix, which features precision I/P
conversion and scaling with full 10-bit 4:4:4 signal processing.
2.1.5 Exceptionally high contrast ratio
The new 2009 D-ILA front projector models incorporate a num-
ber of advanced technologies such as JVC’s proprietary D-ILA
device, a wire-grid optical engine, and high-performance lens.
But what really differentiates JVC’s D-ILA projectors from other
projectors is that they do not employ a dynamic iris.
JVC’s D-ILA projectors instead use a fixed aperture to elimi-
nate unnecessary light that can lower contrast levels, making
possible some of the industry’s highest native contrast ratios.
Innovations such as these and many other superb features en-
able the DLA-HD950 to achieve an exceptionally high native
contrast ratio of 50,000:1*.
Enhanced brightness (extended white peak) and deeper, rich-
er blacks (wide dynamic range) ensure image reproduction
that is vivid and full of depth, making these projectors perfectly
suited for viewing diverse content, such as movies and music
videos as well as live concert performances and sports pro-
grams.
* 30,000:1 for the DLA-HD550.
2.1.6 Clear Motion Drive
Clear Motion Drive technology successfully generates an ac-
curate intermediate frame even for images with fast-moving
action by employing a high-precision interpolation algorithm
that strengthens the precision of picture-character detection.
Whether the video signal source is 60 fps broadcasting or 24
fps movie content, viewers can enjoy smoother and clearer im-
ages with reduced motion blurring thanks to this unique inter-
polation technique that optimizes the number of frames.
2.1.7 Inverse telecine (reverse 2-3 pull down)
In order to display TV broadcasts or commercially available
DVDs created using the 2-3 pull-down process, the inverse te-
lecine (reverse 2-3 pull-down) function found on JVC’s D-ILA
projectors re-converts the video source back to a 24 fps signal
and displays it at double speed or 48 fps, ensuring cinema-like
viewing that is very faithful to the original source.
2.1.8 Certified by ISF (Imaging Science Foundation)
The DLA-HD950/HD990 projector has been licensed with the
ISF C3 (Certified Calibration Controls) mode, enabling trained
dealers to professionally calibrate it to your choices of screen
surface, lighting environments and video sources and then se-
curely store precision settings into the projector. This helps to
ensure reproduction of film or video content accurate to the
source and excellent picture quality optimized for specific en-
vironments.
2.1.9 Certified by THX
The DLA-HD950/HD990 projector features THX mode. This
means the projector has passed the THX Certified Display Pro-
gram, which is a series of tests conducted on display devices
to verify the high definition display performance that home the-
ater enthusiasts demand today, ensuring that the projector will
always deliver superb picture quality faithful to the source.
2.1.10 Newly designed remote control
The remote control unit for the new D-ILA projectors has an at-
tractive silver-gray color that adds appeal to its performance. It
also features well-positioned buttons for the picture modes
(see page 3) and direct input selector (HDMI 1, 2, Component,
Video, S-video and PC), which help to enhance user-friendly
operation.
2.1.11 Quiet operation
Thanks to the enhanced efficiency of the cooling system, fan
noise has been reduced to 19dB*, enabling the viewer to better
concentrate on what’s being shown on the screen even in a
very quiet room.
* When lamp mode set to standard mode.