according to the section 7.4. "Removal of WL-P.C.Board".3. For PT-LB20NTU/E/EA, unscrew the 2 screws and removethe metal fittings for securing WL.4. Unscrew the screws (PT-LB20NTU/E/EA: 2, Others: 3) andremove the grounding metal (2).5. Unscrew the 2 screws and remove the P-Module.7.10. Removal of Lamp Unit1. Turn the projector upside down.2. Loosen the 2 screws until they idle, remove the lamp unitcover.3. Loosen the 2 screws until they idle, remove the lamp unitwith the handle.Note:· When installing the lamp unit (or a new one) in themain unit, place it in a specified position and pressthe connector side and the opposite side of the lampunit (arrow positions shown in the figure below), andconfirm the lamp unit is inserted securely.Then, tighten the 2 screws fixing the lamp unit, andattach the lamp unit cover.7.11. Removal of Analysis Blockand Lens1. Remove the lamp unit according to the section 7.10."Removal of Lamp Unit".2. Remove the A-P.C.Board block according to the steps 1through 6 in the section 7.3. "Removal of A-P.C.Board".3. Unscrew the 3 screws and remove the analysis block, LCDblock and lens.19PT-LB20NTU / PT-LB20NTE / PT-LB20NTEA / PT-LB20U / PT-LB20E / PT-LB20EA / PT-LB20SU / PT-LB20SE / PT-LB20SEA / PT-LB20VU / PT-LB20VE / PT-LB20VEA