Proface APL3000B - Node Box PC - Manual (Page 150)

Chapter 7 Maintenance
7-11
(8) Loose the Backlight Unit setscrew (1), and lift the edge of the Backlight Unit, and remove the unit while
sliding it along the groove.
(9) Insert a new Backlight Unit while sliding it along the groove and fasten the setscrew. The necessary
torque is 0.173N•m.
(10) Insert the Backlight Unit cable to the connector on the inverter board, and secure the cable with the cable
clamp.
(11) Return the PS-A unit to the original condition and tighten the screws (6).
(12) With the reverse procedures to de-installation, install the Mask Cover and the Expansion Board Cover,
sequentially. The necessary torque is 0.5N•m to 0.6N•m.
• Be careful that no dust or dirt adheres to the backlight surface or to the backlight
holder.
• Be careful not to soil the Backlight with moisture, oil content or finger prints;
otherwise, the life duration of the Backlight will be shortened.
• Be sure the cable is inserted completely into the backlight connector. Failure to do
so may cause accidents, which can damage the connector.
• The cable clamp is used to prevent the cable from being caught inside in the PS-A
unit and possibly damaged. Be sure to insert the cable in the cable clamp around
the cable before closing the PS-A unit.
• If any of the screws is missing, check if it fell inside the PS-A 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 PS-A unit’s power ON and check if the
screen’s display is normal. If the display is not correct, please contact the Pro-face distributor
from whom you purchased the backlight unit.
Backlight unit setscrew