BELINEA 10 55 70, Service Manual

Page: 44 / 80

2 . Adjust the FBT focus and VR2 so the characters
are as clear as possible.
4.29. Color Misconvergence
1 . Input a full white pattern in primary mode and adjust
external brightness so there is no bright-
ness and extemal contrast so the screen brightness is
3oFL.
2 . Switch to a cross hatch pattern and verify that
vergence in a circle measured
the center of the
screen (Area A) is not greater than and for all
areas outside Area A greater than
Automatic camera alignment
The listed below are those out using the
automatic Camera Alignment System (CAS). These adjust-
ments cannot be made manually but must be performed using
the CAS software provided by the manufacturer.
4.30. Primary Test Mode Performance
Adjustments
1. RASTER CENTERING
Raster area centered horizontally in the bezel.
2. V. RASTER CENTERING
Raster area centered vertically in the bezel.
3. ROTATION (TILT)
Raster area aligned with bezel.
4.31. Performance Adjustments for
1.
2 .
3 .
4 .
5 .
6.
7.
All Preset Modes
H POSITION
Centers the display horizontally in the raster area
H SIZE
Configures display width as
V POSITION
Centers the display vertically in the raster area
mm).
V SIZE
Configures display height as
V L i n e a r i t y
Configures vertical linearity as less than 8%.
PINCUSHION
Sets left and right pincushion distortion to less than
KEYSTONE
Sets upper and lower keystone distortion to less than
8. PARALLELOGRAM
Sets parallelogram distortion to less than
Conclusion of automatic alignment:
4.32. Image Performance Verification
Horizontal Position
Horizontal
Vertical Position
Vertical Size
Horizontal Linearity
(10 x 8 cross hatch pattern)
This calculation is based on the following
1.
2 .
3 .
4 .
5 .
6 .
7 .
Max Min
x 100% 10%
Vertical Linearity
(10x8 cross hatch pattern).
Max Min
Recall Button Function
Adjust H/V phase and size at random using the external
controls and press the recall button. Check that the
image performance has returned to be in
which
will indicate the Recall button is functioning correctly.
4.33. Uniformity Verification
Input a 2” square pattern in primary mode, set contrast to
maximum and check that there is no overshoot. Check that the
brightness in the four comers of the screen is not less than
70% of that in the center of the screen.
4.34. Brightness Verification
1. Input a primary mode timing with no input. Adjust
external brightness to
2. Input a full pattern and adjust cxtcrnal contrast to
maximum then that brightness at ccntcr of
shall bc than 30FL. Adjust cxtcrnal bright-
ness to maximum and check that at ccntcr
of the screen is
4.35. Display Size Stability
Inputer a full white pattern in primary mode, set external
brightness at
and measure the display size. Adjust the
brightness to 30FL and remeasure the display size. The
fereness should be less than