4.8.2 FOCUS
Measuring
ItemTest pointAdjustment partDescription
instrument
FOCUSSignalFOCUS 1 VR(1) Receive the crosshatch signal.
[32" MODELS]generatorFOCUS 2 VR(2) Set the ZOOM mode to FULL.
[In HVT](3) By turning the FOCUS 2 VR, adjust the picture so
that the A part vertical line may become thinnest
(Fig.1) .
A(4) By turning the FOCUS 1 VR, adjust the picture so
that the A part horizontal line may become uniform
at the line centre and its periphery (Fig.1) .
(5) Make sure that when the screen is darkened, the
lines remain in good focus.
HVT
FOCUS 1
FOCUS 2
SCREEN
finest and sharpest
as possible
Horizontal
line
Vertical
line
Fig.1
FOCUSSignalFOCUS VR(1) Receive the cross-hatch signal.
[28" MODELS]generator[In HVT](2) Set the ZOOM mode to FULL.
(3) While looking at the screen, adjust the FOCUS VR
to the vertical and horizontal lines will be clear and
infine detail. (Fig.1)
(4) Make sure that the picture is in focus even when the
screen gets darkened.
HVT
FOCUS
SCREEN
(No.YA063)1-25 |
ACEC
