Digital Electronics Corporation Pro-Face PL-6900 Series, User Manual

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PL-6900 Series User Manual
Maintenance and Inspection
Follow the steps given below to change the PL’s backlight. Be sure to wear cotton
gloves when performing this work to prevent burns. Also, remove the PL from its
installation panel, and place it face down (as shown below) when performing this
work.
7-3 Changing the PL Backlight
The PL’s backlight can be changed after it wears out. The steps involved are
outlined below.
The steps for removing the Rear Maintenance Cover and the Half Cover are the
same for each PL unit.
Please use the following table to identify which backlight model number to use
when ordering your backlight.
WARNING
• Whenever changing the backlight, be sure the PL's power cord
has been disconnected and that the unit is cooled down.
• When the PL's power cord is connected and the PL is ON, high
voltage runs through the wires in the backlight area—do not touch
them!
• When the PL's power has just been turned OFF, the backlight area
is still very hot! Be sure to wear gloves to prevent being burned.
• Do not try to replace the backlight while the PL is installed in a
cabinet or panel. Remove the PL first, then begin the backlight
replacement procedures.
1) Unplug the PL's power cord from
the main power supply and then
disconnect the PL power cord
terminals from the PL's power
terminal block.
PL Type Backlight Type
PL- 6900T
PL- 6901T
GP675T-BL00-MS
Power Cord
(PL-6901T)
• Be sure to perform the backlight
changeover on a flat, level sur-
face. This will prevent damage to
the PL unit and the accidental
cutting of any of its power cord
terminals.