Panasonic PT-LB20NTU Service Manual

Also see for PT-LB20E: Operating instructions

Panasonic PT-LB20NTU Service Manual Manual pdf 24 page image

8.2. Cautions for Adjustment· Never unplug the power cord until the power indicatoron the projector illuminates red.· To maintain and ensure safety, always use thedesignated components for replacement parts.· If removing any clamps, lead wires or connectors,always place them back in their proper locations.· Be careful not to damage the lead wires or componentswhen using a soldering iron or similar tool.8.3. Setting Before Adjustment· Set up the projector to obtain the projection distance below.· Turn the zoom ring of the projector to obtain the largest sizeof the picture.8.4. Convergence AdjustmentExecute this adjustment when replacing the LCD panel .8.4.1. Tools to be usedService Kit (Part No. TZSH07015): This kit is composed of 3extension flexible cables and 3 connector extension cables.Note:· Consult your dealer or Authorized Service Center for theservice kit.8.4.2. Preparation1. Loosen 2 screws fixing the panel adjuster and 3 screwsfixing the panel attachment, then tighten the 5 screwstemporarily just until the LCD panel can be shifted by yourfingers.Note:· See figures in the section 7.13. "Replacement ofLCD Panel" for 2 screws fixing the panel adjusterand 3 screws fixing the panel attachment.2. Reassemble the projector in the reverse order ofdisassembling, but leave the upper case and the screwsfixing the A-P.C.Board block as they are removed.3. Connect the service kit (extension cables).· Each flexible cable of LCD Panels (R/G/B) - Connectors(A1/A2/A3) on A-P.C.Board· Power fan connector - Connector (A16) on A-P.C.Board· Exhaust fan connector - Connector (A17) on A-P.C.Board· PBS fan connector - Connector (A19) on A-P.C.Board4. Covering with an insulator (cloth or the like) to prevent ashort circuit, set the A-P.C.Board block on the main unit.Note:· Handle with care not to apply external force toconnecting parts which connect the main unit and A-P.C.Board.8 Measurement and Adjustments8.1. Adjustment Procedure Flowchart24PT-LB20NTU / PT-LB20NTE / PT-LB20NTEA / PT-LB20U / PT-LB20E / PT-LB20EA / PT-LB20SU / PT-LB20SE / PT-LB20SEA / PT-LB20VU / PT-LB20VE / PT-LB20VEA