POSSIBLE REASONS: 1.Cable contact does not reach the designated position or loose 2.Power supply or video input terminal INT 3.Video system error 3.Other hardware failure SOLUTIONS: Remove failures White image 1.Lens type error(e.g.manual lens setas DC lens in OSD menu) 2.Image brightness adjusts too high 3.BLC on 4.DC lens cable INT SOLUTIONS:Adjust/reset 5.DC lens brokendown 6.Other hardware failure SOLUTIONS:Remove failures ICR switching failure 1.Box camera ICR module: half color half black and white image, ICR may be jamed in the middle of the module after strong shock Re-power up after slight shock 2.Seeting error: Day/Night(with CDS) mode set as EXT, Day/Night(without CDS) mode set as AUTO 3.Other hardware failure. SOLUTIONS:Adjust/reset Image blurred , unclear or hole existed 1.Front glass or lens dirty 2.The transparent cover wore away 3.Lens lost focus,adjust the focus 4.Other hardware failure. SOLUTIONS:Clean and readjust it the transparent cover should be cleaned with clean soft cotton Vehicle licence plate camera can not catch the vehicle licence 1.Shutter speed should be set from 1/500 to 1/1000 or less while monitoring fast moving vehicles 2.White light brightness is too low SOLUTIONS: Reset the parameter DC lens reboot again and again or fail to turn on 1.Lens failure 2.Box camera with DC/VIDEO switch in gear pennal, when transferred to "VIDEO", image will be white SOLUTIONS:Adjust it