5-4° ∞Note:Put a softer plate on table to avoid operation panel to be scratched is necessary.1) Face the bottom of machine, loosen 2 pieces of M3X8 tapping screws then open Bottom PlateAsm. from Bottom Cover.2) Bottom Plate Asm.Pull out all connectors on Main Board, NCU Board and Power Board , then Bottom Plate Asm.can be taken out from Bottom Cover.3) NCU Board Asm. , Main Board Asm. , Power Board Asm.Loosen 3 pieces of M3X6 taptite screw for NCU Board, 2 pieces for Main Board and 2 piecesfor Power Board then NCU Board Asm, Main Board Asm. and Power Board Asm. can betaken out from Bottom Plate.4) InsulationTake out Insulation sheet from Bottom Plate.5) Separate Rubber Leg and Insulation Sheet.5.3.4 SIM Card Holder Assembly(1) Face the bottom of machine, loosen 1 piece of M3X12 tapping cap screw.(2) SIM Card Holder AsmOpen Operational Panel, loosen 1 piece of M3X12 tapping cap screw for SIM Card Holderand SIM Card Cover then SIM Card Holder Asm can be take out from machine.(3) SIM Card Holder, SIM Card Cover and SIM Card PCB Asm.Loosen 1 piece of M3X8 tapping cap screw for fixing Sim Card Holder and SIM Card Coverthen can separate SIM Card Holder, SIM Card Cover and SIM Card PCB AIM.5.3.5 Scanner Mode UnitFigure 5-3 Scanner Mode Unit(1) Open Operational Panel and rotate Pull Tie that fixed on OP Bracket until one side of Pull Tiecan be taken out from OP Bracket. Loosen 1 piece ofM3X8 tapping screw that fix anotherside of Pull Tie on Upper Cover then it can be taken out from Scanner Mode Unit.(2) Loosen 1 piece of M3X8 tapping screw that fix on right side of Upper Cover and release the 4latches that fix Upper Cover and Bottom Cover. Lift Scanner Mode Unit and all cables can beUpper Cover UnitLower Frame UnitUpper Frame UnitO/P Unit