5-7
Chapter 5 - Maintenance
PL-DU6900/PL-DU7900 User Manual
When Changing the PL-B7900 Backlight
7)
Disconnect both back-
light power connectors
from the Invertor Board.
8)
Each backlight (upper and
lower) is fixed in place
with an attachment screw.
Remove each of these
screws.
9)
Open/release each plastic
cable holder.
Each backlight uses a cable
holder to prevent the cable
from becoming caught or
pinched when the DU’s rear
cover is opened or closed. Be
sure both cables are secured by
their holder before closing the
rear cover.
• Use a "1" sized Phillips
screwdriver to remove
the backlight attach-
ment screws.
• Be careful not to lose
any of the small attach-
ment screws.
• Do not let any of attach-
ment screws fall inside
the DU unit’s chassis or
front panel area, since it
could cause an electri-
cal short when the DU's
power is turned ON
again.
6)
The DU’s LCD display
unit is fixed in place with
two (2) attachment
screws. Remove these
screws.
Power
Connectors
Cable Holder (opened)
Attachment
Screws
Power Connectors
Attachment Screw
Cable Holder (closed)
Invertor
Board
Invertor
Board
