English_35troubleshootingtroubleshootingTroubleshootingIf you have trouble operating your camera, refer to the following table.If the guidelines do not enable you to solve the problem, contact an authorized technician.Problems TroubleshootingNothing appears on the screen. y Check that the power cord and line connectionbetween the camera and AHD DVR are properlyconnected.y Check that you have properly connected BNC cableto the camera.y Check the type of lens.The image on the screen is dim. y Is lens stained with dirt? Clean your lens with soft,clean cloth.y Set the monitor or DVR to the proper condition.y If the camera is exposed to very strong light,change the camera position.The image on the screen is dark. y Adjust the contrast feature of the monitor or DVR.y If you have an intermediate device, set the 75Ω /Hi-z properly.The camera is not working properly, andthe surface of the camera is hot.y Check that you have properly connected the camerato an appropriate power source.The DAY/NIGHT menu does not work. y Check that AGC of EXPOSURE SETUP menu is ‘OFF’.Color is not correct. y Check the setting of WHITE BAL SETUP menuThe screen flickers continually. y Ensure the camera is not pointing towards the sun.When coaxial communication is notavailabley Make sure that the camera,DVR and monitor areinstalled within the recommended distance.