Panasonic SC-AK78 Operating Instructions Manual

Also see for SB-PC70: Operating instructions Operating instructions Operating instructions Operating instructions Operating instructions

RQT528942Troubleshooting guideBefore requesting service for this unit, check the chart below for a possible cause of the problem you are experiencing. Some simple checks or aminor adjustment on your part may eliminate the problem and restore proper operation.If you are in doubt about some of the check points, or if the remedies indicated in the chart do not solve the problem, refer to the directory ofAuthorized Service Centers (enclosed with this unit) to locate a convenient service center, or consult your dealer for instructions.While listening to FM broadcastsThere is a “rushing noise”during a stereo broadcastwhich is not audible duringa monaural broadcast.You hear excessive noiseduring a stereo broadcast,and occasionally the sounddisappears.The stereo indicator (“ST”)flickers and does not lightcompletely.The sound during a stereobroadcast is highly distort-ed.The transmitting station is distant.The installation location and orientation ofthe antenna are unsuitable.The transmitting station is distant.The power of the TV set or VCR is ON.There is a building or mountain nearby. [Dis-tortion is caused by interference betweenthe signal from the transmitting station (di-rect wave) and the signal reflected from thebuilding or mountain (reflected wave).]If you are using an indoor antenna, changeto an outdoor antenna.Try switching off the TV set or VCR.Use a high-grade outdoor antenna, and in-stall it in a good location, height, and orienta-tion for reception.8———8While listening to AM broadcastsYou hear an unusual beatsound.You hear a low-frequencyhum.You are using the system at the same timeyou are playing a TV set.The antenna wire is near the power cord.Switch off the TV set, or use the system fur-ther away from it.Separate the antenna wire from the powercord.Problems common to all systemsECO mode is on but thedisplay panel still lights up.The location of the variousmusical instruments is notwell defined.The left and right soundsare reversed.LOW frequency soundscannot be heard.When listening to the exter-nal unit, the left and rightsounds are reversed.There is no sound when asource is being played.“ERROR” message ap-pears on the display.“ – – : –– ” appears on thedisplay.“F61” appears on the dis-play.DEMO mode is on.The (+) and (–) connections to one of thespeakers are reversed.The left and right connections to the speakerare reversed.Either the left or the right LOW speaker ca-ble is not connected.The left and right connections to the externalunit are reversed.The (+) and (–) wire of the speaker cordsare shorted.Incorrect operation has been done.• You plugged the power cord in for the firsttime.• There was a power failure recently.Check if the speaker cords have shorted.Turn DEMO mode off.Connect the speaker cords correctly.Connect the speaker cords correctly.Connect the left and right speaker cables tothe LOW terminals.Connect the external unit’s cord correctly.Switch the system to the standby mode, andreconnect the speaker cords so that they arenot shorted. Then switch on the power.Operate the unit correctly by following theoperating instructions.Set the time.If they are not shorted then there is a powersupply problem. Consult your dealer for as-sistance.1277797———13———Problem Probable cause(s) Suggested remedy Reference page(s)ReferenceFor detailed instructions, contact an authorized servicenter in the U.S.A. and Panasonic Canada Inc. Customer Care Centre in Canada.In the U.S.A. 1-800-211-7262 or web site(http://www.panasonic.com)In Canada 905-624-5505 or web site (www.panasonic.ca )——————

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