Pro-face PL-6930-T41, Руководство пользователя

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Chapter 8 Maintenance
8-7
8.5 Replacing the Backlight
PL units use a CFL, long-life type backlight. The actual life of the backlight however, will vary depending on
the PL’s operating conditions, and replacement may be required. A PL backlight has a life of 50,000 hours
(approx. 5.7 years, at 25°C and 24 hour operation), when the backlight is lit continuously (time required for
brightness to fall to half its normal level.)
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Preparation
Prepare the following beforehand.
• Replacement backlight (See your model on the table above.)
• A pair of clean (preferably new) cotton gloves.
• A Phillips screwdriver (no.2)
• When the LED setting is specified with the RAS control in Control Panel and a backlight
burnout is detected, the status LED illuminates in orange.
• If the backlight or the display unit is damaged, the screen display will go out. Even if the screen
goes out, however, there is a possibility that the touch panel is still operating correctly.
Therefore, since any type of touch panel contact could have an unexpected or dangerous effect
or result, be sure not to touch the screen when this condition occurs.
• A backlight burnout is detected by monitoring the consumed current. Depending on the
condition of the backlight, a backlight burnout may not be detected or it may be detected before
the backlight burns out completely.
Whenever changing the backlight, be sure the PL’s power cord has been disconnected and that the unit is
cooled down.
High voltage runs through the wires in the backlight area. When the PL’s power cord is connected and the
PL is ON, do not touch the area!
When the PL’s power has just been turned OFF, the backlight area is still very hot! Do not touch the back-
light area until the area is cooled down. Be sure to wear gloves to prevent being burned.
The backlight is very fragile. Do not strongly push the glass tube or do not strongly pull it when replacing
the Backlight. If the glass tube breaks, you may be injured.
PL Type Backlight Type
PL- 6930
CA3-BLU12-01
PL- 6931
PL- 7930
CA3-BLU15-01
PL- 7931