SERVICE MANUALREFERENCE NO. SM5110479FILE NO.PRODUCT CODE :PLC-EF31 ME7A 1 122 193 00 U.S.A. , CanadaPLC-EF31 PE7A 1 122 194 00 Continental Europe, Asia, Africa, M.E.PLC-EF31 PE7C 1 122 194 02 U.K.PLC-EF31N ME7AA 1 122 193 20 U.S.A. , CanadaPLC-EF31NL ME7AL 1 122 193 30 U.S.A. , CanadaMultimedia ProjectorGive complete “CHASSIS NO." forparts order or servicing, it is shown onthe rating sheet on the cabinet of theProjector.Chassis No. ME7-EF3100ME7-EF31N00ME7-EF31NL00NOTE: Match the Chassis No. on the ratingsheet on the cabinet with theChassis No. in the Service Manual.If the Original Version ServiceManual Chassis No. does notmatch the unit’s, additionalService Literature is required. Youmust refer to “Notices” to theOriginal Service Manual prior toservicing the unit.CONTENTS ;Specifications 2Safety Instructions 3Protections 4Ass'y lamp replacement 6Mechanical disassemblies 9Optical unit disassemblies 13Troubleshooting 18Waveforms 33Electrical adjustments 35Optical adjustments 43CPU input/output port functions 53The cautions in schematic diagrams 57Unit PFC, Unit lamp ballast and IC block diagrams 59Parts list 64Cabinet, Chassis and Optical parts list 67Electrical parts list 70Schematic diagrams S1~S10Block diagrams B1~B2PWB parts location diagrams P1~P5MODEL NO.PLC-EF31(Projection lens is optional.)Canada, Europe, Asia, Africa, M.E., U.K.PLC-EF31NU.S.A., CanadaPLC-EF31NL(Projection lens is optional.)U.S.A.Original version