1-2.Trouble ShootingCAUSE CHECK POINT CHECK ITEM JUDGEA. Power supply (NG)=>Power supply is NG(OK)=>Check next stepPower is not on 1.Power supply isconnected well.2.No light on“ON/Standby” LEDB. Keypad PCBconnection with+3.3V(NG)=>KEYPAD PCB orCable1 (2-1) is NG(OK)=>MAIN PCB is NGStandby modecouldn’t bepowered on”ON/Standby” LED Color keeps onorange=>KEYPAD PCB or MAINPCB is NGMAIN PCB display MXIC Pattern(See1-1)(NG)=>MAIN PCB is NG(OK)=>Check next stepDisplay isabnormalCamera DSPdisplayTest Pattern(See1-1)(NG)=>CAMERA HEAD ASSYor Cable1(2-1) is NG(OK)=>MAIN PCB is NGFlicker Switch FLICKER SW(50/60 Hz)(OK)=>Normal(NG)=>Check next stepMAIN PCB display MXIC Pattern(See1-1)(NG)=>MAIN PCB is NG(OK)=>Check next stepDisplay withwaved lineCamera DSPdisplayTest Pattern(See1-1)(NG)=>CAMERA HEAD ASSYor Cable1(2-1) is NG(OK)=>MAIN PCB is NG16All manuals and user guides at all-guides.com