NEXCOM NPT 1550 - Manual (Page 12)

5
3-2 Replace the Motherboard
To replace the motherboard, please follow the below steps:
(1) Disconnect the HDD cable from the motherboard (Chapter 3-1, step a,b)
(2) Open the system box to access the motherboard (See below)
a. Unfasten the screws(x11) on the back of system box.
b. Press the Front bezel then separate top and bottom chassis(L1、L2).
c. Remove the LCD rear cover.
d. Unfasten the screw(x8) fixing the motherboard and heatsink.
e. Unfasten the screw(x4) fixing the motherboard.
f. cable unplug out the motherboard with metal I/O bracket.