Eiki LC-X71 LC-X71L - Manual (Page 21)

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B-Polarized Glass
Mounting Ass'y
and Base
R-Polarized Glass
Mounting Ass'y
and Base
G-Polarized Glass
Mounting Ass'y
and Base
A
A
A
Fig.1- 2
Optical Adjustments
Main Board
Before taking optical adjustments below, remove the Cabinet Top and Main Board following to the “Mechanical
Disassemblies”
Adjustments require a 2.0mm hex wrench and a slot screwdriver.
Note: Do not disconnect connectors K8L, K8X, K8D, K8G and K8E on the main board, because the projector can
not turn on due to operate the power failure protection.
Fig.1- 1
Polarized glass
mounting base
A
Polarized glass
mounting ass'y
[Before Adjustment]
- Input a 100% of black raster signal.
[R/G/B-CONTRAST ADJUSTMENT]
1
Loosen a screw A (Fig.1-1/1-2) on the polarized glass mounting
base which you intend to adjust.
2 Turn the polarized glass mounting ass'y and the polarized glass
mounting base at the same time as shown in Fig.1-1 to obtain the
darkest brightness on the screen.
Note: Both of them should be moved at the same time and in the
same direction.
3 Tighten the screw A to fix the polarized glass mounting base.
Repeat steps 1 to 3 for remaining polarized glasses.
Contrast adjustment
WARNING : USE UV RADIATION EYE
AND SKIN PROTECTION
DURING SERVICING
CAUTION: To prevent suffer of UV radia-
tion, those adjustments must be
completed within 25 minutes.