28FAQMaintenanceDisplay panelThe front of the display panel has been specially treated. Wipe the panel surface gently using only a cleaning cloth ora soft, lint-free cloth.• If the surface is particularly dirty, soak a soft, lint-free cloth in diluted neutral detergent (1 part detergent diluted by100 times the amount of water) and then wring the cloth to remove excess liquid. Use this cloth to wipe the surfaceof the display panel, then wipe it evenly with a dry cloth of the same type until the surface is dry.• Do not scratch or hit the surface of the panel with fingernails or other hard objects. Furthermore, avoid contactwith volatile substances such as insect sprays, solvents and thinners; otherwise, the quality of the surface may beadversely affected.CabinetIf the cabinet becomes dirty, wipe it with a soft, dry cloth.• If the cabinet is particularly dirty, soak the cloth in a weak detergent solution and then wring the cloth dry.Use this cloth to wipe the cabinet, and then wipe it dry with a dry cloth.• Do not allow any detergent to come into direct contact with the surface of the LCD TV.If water droplets get inside the unit, operating problems may result.• Avoid contact with volatile substances such as insect sprays, solvents and thinner; otherwise, the quality of thecabinet surface may be adversely affected or the coating may peel off. Furthermore, do not leave it for long periodsin contact with articles made from rubber or PVC.Power cord plugWipe the plug with a dry cloth at regular intervals. (Moisture and dust can lead to fire or electrical shock.)First, unplug the Power cord plug from the wall outlet.Before requesting service or assistance, please follow these simple guidelines to resolve the problem.If problem still persists, please contact your local Panasonic dealer or PanasonicServicenter for assistance. For details (p. 31)Pictures from external equipmentare distorted when the unit isconnected via HDMI• Is the HDMI cable connected properly?(p. 20-21, 27)• Turn Off the TV unit and equipment, then turnthem On again.• Check an input signal from the equipment.(p. 27)• Use equipment compliant withEIA/CEA-861/861B.White spots orshadow images(noise)• Check the position, direction,and connection of the aerial.The LCD panel movesslightly when it ispushed with a fingerClattered sound mightbe heard• There are some loosenessaround the panel to prevent thedamage to the panel.The panel might move slightlywhen it is pushed with a finger,and clattered sound might beheard. This is not a malfunction.The remote control does not work• Are the batteries installed correctly? (p. 6)• Has the battery run down?• To operate external equipment of othermanufacturers, register theremote control codes. (p. 18, 23-24)