BELINEA 10 55 70, Service Manual

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ness so it is not visible and set external contrast so the
brightness is 30FL. Switch to a display of
charac-
ters.
2 . Adjust the FBT focus and VR2 so the characters
are as clear as possible.
4.9. Color Misconvergence
1. Input a full white pattern in primary mode and adjust
external brightness so there is no
bright-
ness and external contrast so the screen brightness is
2 . Switch to a cross hatch pattern and verify that
vergence in a circle measured from the center of the
screen (Area A) is not greater than
and for all
outside Area A is not greater than
Automatic camera alignment proce-
dure:
The procedures listed below are those carried 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;
4.10. Primary Test Mode Performance
Adjustments
1. H. 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.
4.1 Performance Adjustments for
All Preset Modes
1. H POSITION
Centers the display in the raster area
2. H SIZE
Configures display width as
3. V POSITION
Centers the display vertically in the raster area
4. V SIZE
Configures display height as
5. V Linearity
Configures vertical linearity as less than 8%.
6. PINCUSHION
Sets left and right pincushion distortion to less than
7. KEYSTONE
Sets upper and lower keystone distortion to less than
8. PARALLELOGRAM
Sets parallelogram distortion to less than
Conclusion of automatic alignment:
4.12. Image Performance Verification
Input each of the preset timings and check that the following
1.
2.
3.
4.
5.
Horizontal Position
Size
Vertical Position
Vertical Size
Horizontal Linearity
(10 x 8 cross hatch pattern)
This calculation is based on the following formula:
6.
7.
Max
x 100% 10%
Vertical Linearity
(10x8 cross hatch pattern).
Max
x 100% 8%
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.
4.13. Uniformity Verification
Input a 2” square pattern in primary mode, set contrast
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
4.14. Brightness Verification
1. Input a primary timing with no input. Adjust
external to
2 . input a full and adjust contrast to
maximum then check that brightness at the center of the
screen shall be more than 30FL. Adjust external bright-
ness to maximum and check that brightness at the center
of the screen is
4-3