Proface APL3000B - Node Box PC - Manual (Page 80)

Chapter 4 Maintenance
4-11
(8) Loosen the Backlight Unit setscrew (1), lift the edge of the Backlight Unit, and remove the unit by
sliding it along the groove.
(9) Insert a new Backlight Unit by sliding it along the groove and fasten the setscrew. The necessary torque
is 0.166N•m.
(10) Insert the Backlight Unit cable to the connector on the inverter board. Secure the cable with the cable
clamp.
(11) Return the PS-A unit to the original condition and tighten the screws (6).
(12) Re attach the Mask Cover and then the Expansion Board Cover. The necessary torque is 0.5N•m to
0.6N•m.
• Be sure that no dust or dirt adheres to the backlight surface or to the backlight
holder.
• Be sure not to soil the Backlight with moisture, oil content or finger prints; otherwise
the life duration of the Backlight will be shortened.
• Be sure to insert the cable into the backlight connector securely. Failure to do so
may 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 into the cable clamp 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 a malfunction.
• After backlight replacement is completed, turn the PS-A unit’s power ON and check if the
screens 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