This service manual of the old video cassette recorder VT-LC50EM is very good readable even the tiniest numbers (i.e. IC-pins). The circuits are very clear. Many details of the schematic are very good described but in GERMAN language. Many schematic details - but complete at all. Common background information of several details are enclosed and physical knowledge of the TFT liquid crystal display for example. The manual lacks PCB drawings. If you understand german I would recommend this manual for you.
1. Turn the projector upside down. 2. Unscrew the 7 screws.
6. Unscrew the 12 screws and remove the connector metal fittings. Note: · For PT-LB80NT**/LB75NT**, WL-P.C.Board is attached on the connector metal fittings. Be careful with handling.
3. Return the projector to the normal position. 4. Remove the upper case.
7.3.
Removal of A-P.C.Board
1. Remove the upper case according to the section 7.2. "Removal of Upper Case". 2. Loosen the 2 screws until they idle, remove the lamp unit cover. Note: · For the interlock switch damage prevention when reassembling, must remove the lamp unit cover. 3. Unscrew the 2 screws and remove the connector cover.
7.4.
Removal of K1-P.C.Board and K2-P.C.Board Block
1. Remove the A-P.C.Board block according to the steps 1 through 5 in the section 7.3. "Removal of A-P.C.Board". 2. Loosen the 3 screws until they idle, remove the lamp unit with the handle. 3. Unscrew the 3 screws and remove the block of Analysis Block, LCD Block and Projection Lens. 4. Unscrew the 3 screws and remove the Lamp house. 5. Unscrew the 2 screws and remove the A-P.C.Board block (with WL-P.C.Board).
