27Reference pageCause/solutionTroubleshootingBefore asking for repairs, confirm the causes with the following table.Contact your dealer if a problem cannot be solved even after checking and trying the solution in thetable or a problem is not described below.Symptom• Are the power cord and coaxial cableconnected appropriately?→ Check whether the connection isappropriately established.• Is the monitor brightness appropriatelyadjusted, or is the contrast appropriatelyadjusted?→ Check whether the monitor settingsare appropriate.• Is the lens of the camera soiled with dirtor dust?→ Check whether the lens of thecamera is clean.No image displayedBlurred image• Is the lens cap detached?→ Check whether the lens cap is removed.–• Is the focus adjusted correctly?→ Check if the focus is adjusted correctly. 21~22–18~20• The power cord, power connector, orpower plug is damaged. Continuoususe of the damaged cord, connector, orplug may cause electric shock or fire.Disconnect the power plug immediatelyand request repair from your dealer.Heated portion of powerline consisting of powercord, connector, andpower plug during useThe temperature of powercord rises or falls when thepower cord is bent orstretched during use–Damaged power cordsheathing–