ViewSonic N1900w-1E Service Manual page 43

3.2. Unscrew 9 screws and disconnect the wires to remove Main Board and Power Board.
Main Board Power Board
3.3. Lay Panel Unit facedown and unscrew 4 screws on its right and left sides to remove Panel Unit
and Keypad Board.
Panel Bracket Panel Unit Keypad Board
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ViewSonic Corporation N1900w-1E
Confidential - Do Not Copy