Hitachi Projector Accessories HAS-K250 Manual De Usuario

ENGLISH

HAS-K250

(both 4:3 and 16:10 screens)

• Roll down screens and other screens that are not perfectly ﬂat tend to substantially distort the projection surface

and cannot be used. Use board screens or other ﬂat screens.

Bead-type screens with a high screen gain are not suitable for this projector. Use of a matte screen with a wide

viewing angle and a gain of about 1.0 is recommended.

Interaction between the screen pattern and LCD pixels may result in interference fringes (moiré). This is not a

malfunction. Use a screen that suppresses this phenomenon.

• The size of the image at the top of the screen changes with focus adjustment. Fine-tune screen position and

angle after adjusting focus the ﬁrst time.

•  Reset corner ﬁt before starting adjustments.
•  Make sure that the digital zoom value is set to the maximum value (full screen) before starting adjustments.
•  Make sure that the keystone control is set to 0 (no correction) before starting adjustments.
•  It takes about 30 minutes for lamp performance to stabilize and a change in environment may cause subtle

changes in projection location and focus. Make proper adjustments to compensate for changes in focus.

Note:

• Changes in temperature, humidity and other ambient environmental factors may result in changes in screen

size and location.

• The minute vibrations and other phenomena that the wall mount unit and the mirror are exposed to will start

to cause changes in projection location a week or so after installation.

1. • Set a screen size that is smaller relative to actual screen size to allow for changes after installation.

• Use the values in the table below to set a vertical and lateral margin.
• Set a margin for each corner to allow for screen distortion.

Adjustment precautions

Screen size

Diagonal size

(inches)

Vertical

margin

(mm)

Lateral

margin

(mm)

100

Vertical margin

Lateral
margin

Projected image

*#5-A'0)KPFF