akira PTV-50H08, Service Manual

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Lens Specification Unit
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Model No.: PTV-50H08
Version: 1.0
2. Focusing of the red Lens
While adjusting the position of the color distortion from orange to dark red, observe and adjust the
focusing of the straight bright line according to the following figure. The inner and the exterior
distortion of orange or dark red tally with the specifications in the following table: (reference
value:1~ 3mm)
Lens Specification
Unit
Screen size 43 50 Feet
Square
5.0 3.0 Square of the mesh
At the edge * *
I (inner side) * (max 2mm) * (max 2mm)
Color
distortion
O (external side) ** (max 2mm) ** (max 2mm)
Note
Note: * slight orange or colorless
** slight dark red or colorless
3. Focusing of the Blue Lens
While adjusting the position of the color distortion from purple to green, observe and adjust the
focusing of the straight bright line according to the following figure. The inner and the exterior
distortion of purple or green tally with the specifications in the following table: (reference value:1~
3mm)
O
Note: * slight purple or colorless
** slight green or colorless
1.2.10 Overall Check of Focusing
Receive the signals of the digital card and confirm the normality of the overall focusing.
1.2.11 Manual Adjustment of digital convergence.
Preparation of Adjustment:
(1) Receive the PH graphic card signal of the PAL system, and make the following adjustment in the
scanning modes of 60P, 100I and 1250I
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