Vertical Linearity, Size And Position Adjustment - Hitachi 36SDX88B Service Manual

3.1 .I .4 Vertical Linearity, Size and Position Adjustment
Adj. point
D17
Preparation for adjustment
Adjustment procedure
Notes
(3) Adjust 017 of adjustment code,
V position, so that Ll and L2 are
equal as shown below.
$ Ll
m 5
(unit :mm)
Set name IL-l -L21
36SDX88B
23.0
L2
3.1 .I .5 Vertical Pincushion Adjustment
Adj. point D14
Preparation for adjustment
Adjustment procedure
Notes
(1) Adjust Vertical Pincushion
(1) Select Vertical pincushion of factory
Adjust VGA4, SVGA by the
adjustment after adjust adjustment adjust so that vertical
same way.
vertical size.
lines, shown by arrow, at left and
right sides become straight.
Factory adjustment No. :Dl4
(2) Receive the Cross-Hatch
signal of VGA3 in group 1
with Black Background.
(3) Contrast: maximum
Brightness: center
I
I
(2) If adjustment is difficult with D14,
adjust the following items as well.
Trapezoid adjustment : see 3.1 .I .6
Pincushion balance : see 3.1 .I .8
Corner adjustment : see 3.1 .I .9
Parallelogram adjustment : 3.1 .I .7
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