Using the document camera (Continued)
■Locking the white balance
Although the projector’s camera is constantly adjusting the color balance of the images it photographs, the color balance may be disrupted, depending on the color layout of the document. If this happens, the white balance can be locked using the procedures below.
1Lay down a piece of white paper, and adjust so it fills the screen.
Adjust the camera head and arm so that the white paper fills the screen completely.
2Press W.BALANCE button and lock the white
balance.
The LOCK indicator which shows the white balance has been locked lights. If you want to return to the auto adjustment, please press W.BALANCE once again. The LOCK indicator will be off.
Notes
•If the white balance is set to [Lock], once power is turned off or the arm is pushed down, the setting goes back to [Auto].
•The color of the room lighting may prevent the white balance from being adjusted to the optimum level. In this situation, of if you want to use a certain tinting, adjust the
About lamp
The product’s light source is a mercury lamp that lights at increased internal pressure. Be sure to fully understand the following characteristics of the lamp and handle it with extreme care.
•The lamp may burst with a loud noise due to impact or deterioration, or fail to light at the expiration of its life.
•How long it takes before the lamp bursts or the life expires may vary greatly by lamp. Some may burst shortly after first use.
•Burst is likely to happen if the lamp is used after the replacement period has elapsed.
•When the lamp bursts, the broken pieces of glass may get inside the product or be released outside from the openings for ventilation.
•When the lamp bursts, a slight amount of mercury gas enclosed in the lamp along with glass dust may be released from the openings for ventilation.
■Immediately replace the lamp when a sign appears on the screen.
•When the replacement time approaches, a message will appear on the screen.
•The risk of burst will increase if the lamp is continuously used without being replaced.
•Frequently check the used hours and prepare spares when the replacement time approaches. (Refer to “Status display”. p.44 )
■When the lamp is broken
•If glass components, including a lamp and a lens, should break, handle the broken pieces with care to avoid injury and contact your dealer for repair service.
•In the event of lamp burst, unplug the product from the wall outlet, leave and completely ventilate the room. Then, thoroughly clean the area around the projector and discard any edible items placed in that area.
•When the lamp bursts, consult a doctor if glass dust or mercury gas gets into your eyes or you breathe it.
Maintenance
48 | 49 |