4 EnglishCY-PA4003U/PA2003U/PAD1003U 5 EnglishCY-PA4003U/PA2003U/PAD1003USafety Information (continued)Observe the following cautions when installing.Refer wiring and installation to qualifi ed servicepersonnel.Installation of this unit requires special skills andexperience. For maximum safety, have it installed byyour dealer. Panasonic is not liable for any problemsresulting from your own installation of the unit.Follow the instructions to install and wire the product.Not following the instructions to properly install andwire the product could cause an accident or fi re.Take care not to damage the leads.Prevent them from getting caught in the vehiclechassis, screws, and moving parts such as seat rails.Do not scratch, pull, bend or twist the leads. Do not runthem near heat sources or place heavy objects on them.If leads must be run over sharp metal edges, protectthe leads by winding them with vinyl tape or similarprotection.Use the designated parts and tools for installation.Use the supplied or designated parts and appropriatetools to install the product. The use of parts other thanthose supplied or designated may result in internaldamage to the unit. Faulty installation may lead to anaccident, a malfunction or fi re.Do not install the product where it is exposed tostrong vibrations or is unstable.Avoid slanted or strongly curved surfaces forinstallation. If the installation is not stable, the unit mayfall down while driving and this can lead to an accidentor injury.We strongly recommended you to wear gloves forinstallation work to protect yourself from injuries.Failure to heed this caution may result in an accidentand/or injury.Be sure to grip both sides of this unit securely beforeattempting to move it.Since this unit is quite heavy, the unit may fall downand this can lead to an accident or injury.Cover the unused terminals with insulating tape toprevent them from short circuiting.When an extension lead is used, it should be asthick and short as possible; connect it fi rmly withinsulating tape.Wire breaks and short circuits can cause electricalshock or fi re.CautionUse the spacer included when installing the unit sothat the fan and air hole on the base side of the unitare not covered. If the fan and air hole on the base side of the unit arecovered, the unit will become extremely hot and mayfail.Caution for mounting the unit:Never mount the unit in any of the following locationsto avoid damage due to overheating;• Near the heater port.• Places like the dashboard or rear deck, where it maybe exposed to direct sunlight.Do not mount the unit near the door, where it could beexposed to rain.Keep a safe distance between the unit and otherelectronic equipment.When a short circuit occurs, such as in the speakeroutput terminal, etc. the overload protection circuit willoperate. This circuit protects the power amplifi er fromfurther damage when a short circuit occurs. Operationwill temporarily stop. In this case, check the cause ofthe short-circuit and if the problem is fi xed, normaloperation will resume.Since the power amplifi er has a very large output, theunit should be installed in the trunk of your car.Do not install this unit under a carpet, otherwise theunit may fail because of immature heat dissipation.In case more than one power amplifi er is used, makesure to employ the power cord and the fuse havingthe current capacity larger than the total currentcorresponding to the maximum consumption powersof all the amplifi ers.Caution for the power cord (option):Follow an expert’s instruction for the use of the cordseparately sold.For the power, make sure to use the battery lead (yellow)separately sold and specially designed for Panasoniccar-audio/AV system, and to connect directly to the carbattery. Use the cord having the fuse capacity largerthan that of this unit. Connect the power cord and othercords corresponding to the power supply after all theconnections to the speaker are completed.Keep the battery lead (yellow) away from the speakercord.Make sure to use the ground lead (black) separatelysold and specially designed for car audio system, andto connect it to the metal portion of the car chassis.Wire the battery lead (yellow), the ground lead (black),the speaker cords, and this unit with as much distanceas possible from the antenna, the antenna cords andthe car stereo (car radio).If the ground wire is common to both left/right andfront/rear speaker wirings, this unit cannot be used.Always use the independent lead wire for the speakersto be used. In this case, redo the wiring.Caution for the speaker cord (option):The speaker cords and the power amplifi er unit shouldbe kept away from the antenna and antenna extensioncord.Do not directly ground the speaker cords; do not sharethe negative leads of multiple speakers.When using the RCA cords, keep away from thespeaker cords.Caution for the speaker (option):Use speakers with a suitable maximum input.In case of 4-channel/3-channel connection:Use speakers with the impedance of 28 .In case of 2-channel/stereo connection:Use speakers with the impedance of 48 .
