NEC NP-NC900C-A Service Manual page 58

KEY PART REPLACEMENT (Method of disassembly/Photo taken from life)
Put LCD/Keypad/Backlight module on the
desk.
Loosen 4 screws and unplug the 3 pcs
connectors on the LCD board.
Torque: 1.5~2 kgf-cm.
Loosen 3 screws and unplug the 1 pc
connector from the Backlight board.
Torque: 5~6 kgf-cm. Then, take it off.
"Confidential, Do Not Duplicate without written authorization from NEC."
1-6 LCD/Keypad/Backlight Board
Loosen 7 screws and unplug the 3 pcs
connectors from the keypad board.
Torque: 5~6 kgf-cm. Then, take it off.
5-7
Put LCD board on the desk.
Put Backlight board on the desk.