Pro-face PL-DU6900, Руководство пользователя

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Chapter 5 - Maintenance
5-2 PL-DU6900/PL-DU7900 User Manual
5.2 Changing the Backlight
The DU's backlight can be replaced after it has burned out. To replace the back-
light, follow the steps shown below.
If the backlight or the display unit are 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 result, be
sure not to touch the screen when this condition occurs.
Please use the following table to identify which backlight model number to use when
ordering your backlight.
DU unit Backlight Type
PL-DU6900 GP675T -BL00-MS
PL-DU7900 PL7900T -BL00-MS
• Whenever changing the backlight, be sure the DU's
power cord has been disconnected.
• When the DU's power has just been turned OFF, the back-
light area is still very hot! Be sure to wear gloves to pre-
vent being burned.
• When the DU's power cord is connected and the DU is
ON, high voltage runs through the wires in the backlight
area—do not touch them!
• Do not try to replace the backlight while the DU is in-
stalled in a cabinet or panel. Remove the DU first, then
begin the backlight replacement procedures.
• Do not touch the glass tube. If the glass tube is broken
you may be injured.
Follow the steps shown below to replace the DU's backlight. Be sure to wear
cotton gloves while replacing the backlight to prevent burns.
1)
Unplug the DU's power cord
from the main power supply.
If you do not, it may cause an
electric shock.
2)
Disconnect the DU power
cord terminals from the DU's
power terminal block.
Remove
Power Terminals
PL-DU7900
WARNINGS