Sharp DV-L88S/S Service Manual page 13

Adjustment Item Adjustment Menu
qSub colour
SCOLOR
adjustment
wConfrontation
COM
bias adjustment
eOSD position
OSDH
adjustment
rLighting control
BBRIGHT
standard check
Adjustment Point Signal/Setting
Connect the synchroscope 100% colour bar Adjust the yellow amplitude of the colour bar
to 4PIN (VB) of TP1900.
Specified adjustment jig No input state
(illuminometer) or visual Brightness: Center Connect the output of jig to the oscilloscope
observation Perform it in a
combination of
PWB and the
liquid crystal
panel which will measuring value hardly changes around the
be supplied as
products finally.
[Another method] [Another method]
Flicker signal
generator
"Example:
BP1018 made
by JFC"
OSD character
visual observation
13
Adjustment Contents
signal (white level to yellow peak level) to
2.5±0.1Vpp.
White
2.5V
±0.1
Yellow
When using the specified adjustment jig
and adjust the waveform to the minimum
point.
At this time, perform the adjustment several
times to fix the optimal point because the
optimal point.
(Type drawing)
Optimal point
Adjust within the above
range to fix the optimal point
In case of visual adjustment Stand or tilt the
panel as shown in the figure and check by
shaking your head and seeing whether stripes
appear.
If the adjustment is improper, you will see
stripes in the longitudinal direction.
Perform the adjustment so that they
do not appear.
Direction of stripe
Externally input the signal shown left and
adjust so that the cross bars become minimum
by visually checking the screen.
The position of the adjustment value on the
right end of the OSD character is adjusted to
15mm ± 2mm from the right end of the image
plane.
15mm
Check that the BBRIGHT is "76".
DV-L88S/S(H)
DV-L88W/W(A)