Proface AGP3500 - 10.4 DIO HMI" - Manual (Page 228)

Chapter 9 Maintenance
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(8) Insert the new lower backlight unit into the backlight holder as shown here. After the backlight is
completely inserted and the attachment clip clicks into place, lower the unit into the GP.
(9) Confirm that the backlight unit is securely in place and reattach the backlight unit power connector.
(10) Replace the upper backlight unit by repeating the procedures shown in steps (6) to (9).
(11) Return the circuit board chassis to its original position and reattach the rear cover by reversing steps (1)
to (5).
• Be careful that no dust or dirt adheres to the backlight surface or to the backlight holder.
Be sure to handle the replacement backlight unit carefully, since if can be easily
damaged or broken.
• When replacing the Backlight unit, be sure not to catch any wiring on the edge of the
unit. If a wire is caught and becomes cut, it could cause a fire.
• The cable clamp is used to prevent the cable from being caught inside in the GP unit
and possibly damaged. Be sure to insert the cable in the cable clamp around the
cable before replacing the rear cover.
• If any of the screws is missing, check if it fell inside the GP unit’s chassis. If the
power is turned ON while a screw is inside, it may cause an accident or fire.
• After backlight replacement is completed, turn the GP unit’s power ON and check if the screen’s
display is normal. If the display is not correct, please contact the GP distributor from whom you
purchased the backlight unit.
Backlight Unit