Optoma H27 Service Manual page 11

2. Pull out the Top Cover (as the blue arrow show) to remove it and then disconnect the FFC
cable.
Notice : Be careful, don't put forth your strength too hard, in case the FFC cable breaks off.
3. Unscrew 4 screws to remove Keypad Board and Control Key Rubber
(under Keypad Board)
4. Unscrew 5 screws and disconnect 9 connectors, then remove Main Board.
Notice : Because there is a connector under Main Board and linking to DMD Board, you
should lift up to remove Main Board.
Keypad Board
FFC Cable
2-3
Main Board
H27