Adjustment - Hitachi CP-X980W Service Manual

4. Adjustment

4 - 1 Before adjusting
1. Before starting adjustment, warm up the projector
for about 10 minutes. (Blank white)
2.Set Zoom Wide to Max. and project an image a
distance of more than 40 inches.
3.Normalizing the video adjustment.
(Press the [MENU] button of the Remote control
transmitter to display the Setup menu, then press
the [RESET] button. And select the [DEFAULT].)
*note : The setup menu is not displayed on with no
signal.
4 - 2 Ghost adjustment
Signals for internal adjustment
30%
0/255
30%
bit
4 - 3 Flicker adjustment
Signals for internal adjustment
112/255
bit
(V.COM adjustment)
4. Perform all adjustments from the Adjustment menu.
Perform the following operations to display the
Adjustment menu.
a.Press the [MENU] button of the Remote control
transmitter (the Setup menu will appear).
b.Next, press the [RESET] button one time. And
press the [RESET] button again for 5 seconds or
more (the Adjustment menu will appear).
Adjustment procedure
1. Use DAC-P - GHOST - R: in the Adjustment menu
to adjust so that R color ghost is at a minimum.
(Set the adjustment value to 16, then raise the
value. When a ghost appears to the left of a vertical
line, reduce the value by 2 steps.)
2. In the same way, use DAC-P - GHOST-G: in the
Adjustment menu to adjust so that G color ghost is
at a minimum.
3. In the same way, use DAC-P - GHOST-B: in the
Adjustment menu to adjust so that B color ghost is
at a minimum.
Adjustment procedure
1. Make this adjustment after completing the
adjustment in 4-2 Ghost adjustment.
2. Use DAC-P - V.COM - R: in the Adjustment menu to
adjust so that the flicker at the center of the screen
is less than the flicker at the periphery.
(When the flicker is about the same across the
whole screen, adjust so that the flicker at the center
of the screen is somewhat less than elsewhere.)
3. In the same way, use DAC-P - V.COM-G: in the
Adjustment menu to adjust the G color flicker.
4. In the same way, use DAC-P - V.COM-B: in the
Adjustment menu to adjust the B color flicker.
CP-X980W
CP-X985W
7