- 12 -
Service Manual
DISASSEMBLY FOR
S
ERVICE
PTV S
CREENS
P
REPARATION
(
56WX MODELS ONLY
)
Caution: The PTV screens are made of thin plastic and can be broken or scratched easily, if not handled
properly. Work in a clean and dust free environment to insure proper and trouble free installation. Use
lint free cotton gloves while assembling the PTV screens. Do not use abrasive solutions or solvents to
clean screen. If screen is dirty or spotty wipe with a soft, lint free cloth, dampened with glass cleaner or
a similar product to clean the surface.
Note:
The alignment of the screens is vital for good picture. Make sure that proper screen orientation (top/
bottom & front/back) is observed while assembling the PTV screens.
Follow the procedure below for preparation and installation. Refer to figure 7 for further information.
1.
Place the Fresnel screen (circular ridges) on
top of a cushioned surface.
2.
Clean impurities off the surface using an air
gun.
3.
If available, apply anti-static spray to the back
of the screen as illustrated in the figure below.
4.
Apply a double adhesive tape to the top front
edge of the Fresnel screen as illustrated in the
figure below.
5.
Place the lenticular screen (vertical ridges) on
top of a cushioned surface.
6.
Clean impurities off the surface using an air
gun.
7.
Apply a thin silicon to the back along the
horizontal and vertical edges.
8.
Carefully position the lenticular screen over
the Fresnel screen.
9.
Remove the protective film from the protective
screen.
10.
Clean impurities off the surface using an air
gun.
11.
Position the horizontal and vertical felt strips
on the protective screen as illustrated in the
figure below.
12.
Apply the double sided adhesive tape to the
front upper side of the protective screen as
illustrated in the figure below.
13.
Assemble the PTV screens in the order
illustrated in the figure below.
Figure 7. PTV Screen Preparation.
Fresnel Screen
Fresnel Screen
Fresnel Screen
Lenticular Screen
Protective Screen
Protective Screen
Assembled Screen
Protective Screen
Lenticular Screen
Fresnel Screen
Double Adhesive
Tape
Felt (1465mm X 2)
Felt (835mm X 2)
Double Adhesive
Tape
(Front View)
Spray
Location of P/N
300mm
500mm
(1470mm)
(1470mm)
Transparent Tape
(250mm)
(4-6in from screen)
Front
Rear
