Proface AGP3500 - 10.4 DIO HMI" - Manual (Page 226)

Chapter 9 Maintenance
9-17
„Procedure for replacing the backlight
There are two backlight of AGP-3500S.
(1) Unplug the power cord from the main power supply.
(2) Remove the I/F cover and retaining screws (7) on the rear cover.
(3) The top face of the rear cover uses two (2) alignment tabs. Open the rear cover from the bottom of the
unit to free these tabs.
(4) Remove the setscrew (1) on the circuit board chassis.
• Remove the GP unit from the equipment to which the unit has been incorporated,
and work with the GP unit with the display surface facing downward. Be sure to
perform the backlight changeover on a flat, level surface. This will prevent damage
to the GP unit and the accidental cutting of any of its power cord.
• Be sure to protect the display surface to prevent damage during the operations.
• Do not let the attachment screws fall inside the GP, or lose them
• Be sure to open the cover from the bottom of the GP. Attempting to open the cover
from the top of the GP could damage the alignment tabs.
• The Setscrews are not attached to all DC model of GP.
Screws
Screws
Setscrew