JVC AV-20FD24 User Manual

Also see for AV-20FD24: Service manual User guide

Contents

46Most types of television interference can be remedied by adjusting the height and position of the VHF/UHFantenna. Outdoor antennas are recommended for best results. The most common types of televisioninterference are shown below. If one of these symptoms appear when the TV/DVD is connected to a CableTV system, the disturbance may be caused by the local Cable TV company broadcast.GHOSTSGhosts are caused by the television signal following two paths. One isthe direct path and the other is reflected by tall buildings, hills or otherlarge objects. Changing the direction or position of the antenna mayimprove the reception.IGNITIONBlack spots or horizontal streaks may appear, the picture may flutter ordrift. Usually caused by interference from automobile ignition systems,neon lamps or AC powered tools and appliances such as drills or hairdryers.SNOWIf the TV/VCR is located far from the TV station, in a fringe receptionarea where the signal is weak, small dots may appear in the picture.If the signal is extremely weak, the installation of a larger externalantenna may be necessary.RADIO FREQUENCY INTERFERENCE (RFI)Caused by two-way radios, this type of interference produces movingripples or diagonal streaks in the picture. Some cases may cause aloss of contrast in the picture. Changing the direction and position ofthe antenna or installing an RFI filter may improve the picture.PICTURE SIZE VARIATIONA slight picture size variation is normal when you adjust the CONTRASTor BRIGHTNESS settings.CARE AND MAINTENANCETo prevent fire or shock hazard, disconnect the TV/DVD from the power source before cleaning.The finish on the cabinet may be cleaned with mild soap and a soft, damp cloth and cared for as other furniture.Use caution when cleaning or wiping the plastic parts.Reception disturbances