Panasonic CY-PA4003U User Manual

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  Refer wiring and installation to qualifi ed service 

  Installation of this unit requires special skills and 

experience. For maximum safety, have it installed by 
your dealer. Panasonic is not liable for any problems 
resulting from your own installation of the unit. 

  Follow the instructions to install and wire the product.  

  Not following the instructions to properly install and 

wire the product could cause an accident or fi re. 

  Take care not to damage the leads.  

  Prevent them from getting caught in the vehicle 

chassis, screws, and moving parts such as seat rails. 
Do not scratch, pull, bend or twist the leads. Do not run 
them near heat sources or place heavy objects on them. 
If leads must be run over sharp metal edges, protect 
the leads by winding them with vinyl tape or similar 
protection. 

  Use the designated parts and tools for installation.  

  Use the supplied or designated parts and appropriate 

tools to install the product. The use of parts other than 
those supplied or designated may result in internal 
damage to the unit. Faulty installation may lead to an 
accident, a malfunction or fi re.  

  Do not install the product where it is exposed to 

  Avoid slanted or strongly curved surfaces for 

installation. If the installation is not stable, the unit may 
fall down while driving and this can lead to an accident 
or injury. 

  We strongly recommended you to wear gloves for 

  Failure to heed this caution may result in an accident 

and/or injury. 

  Be sure to grip both sides of this unit securely before 

  Since this unit is quite heavy, the unit may fall down 

and this can lead to an accident or injury.

  Cover the unused terminals with insulating tape to 

  When an extension lead is used, it should be as 

  Wire breaks and short circuits can cause electrical 

shock or fi re.   

  If the fan and air hole on the base side of the unit are 

covered, the unit will become extremely hot and may 
fail.

  Never mount the unit in any of the following locations 

to avoid damage due to overheating;

  • Near the heater port. 
  •  Places like the dashboard or rear deck, where it may 

be exposed to direct sunlight. 

  Do not mount the unit near the door, where it could be 

exposed to rain. 

  Keep a safe distance between the unit and other 

electronic equipment. 

  When a short circuit occurs, such as in the speaker 

output terminal, etc. the overload protection circuit will 
operate. This circuit protects the power amplifi er from 
further damage when a short circuit occurs. Operation 
will temporarily stop. In this case, check the cause of 
the short-circuit and if the problem is fi xed, normal 
operation will resume. 

  Since the power amplifi er has a very large output, the 

unit should be installed in the trunk of your car. 

  Do not install this unit under a carpet, otherwise the 

unit may fail because of immature heat dissipation.

  In case more than one power amplifi er is used, make 

sure to employ the power cord and the fuse having 
the current capacity larger than the total current 
corresponding to the maximum consumption powers 
of all the amplifi ers. 

  Follow an expert’s instruction for the use of the cord 

separately sold.

  For the power, make sure to use the battery lead (yellow) 

separately sold and specially designed for Panasonic 
car-audio/AV system, and to connect directly to the car 
battery. Use the cord having the fuse capacity larger 
than that of this unit. Connect the power cord and other 
cords corresponding to the power supply after all the 
connections to the speaker are completed.

  Keep the battery lead (yellow) away from the speaker 

cord.

  Make sure to use the ground lead (black) separately 

sold and specially designed for car audio system, and 
to 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 distance 
as possible from the antenna, the antenna cords and 
the car stereo (car radio).

  If the ground wire is common to both left/right and 

front/rear speaker wirings, this unit cannot be used. 
Always use the independent lead wire for the speakers 
to be used. In this case, redo the wiring.  

  The speaker cords and the power amplifi er unit should 

be kept away from the antenna and antenna extension 
cord. 

  Do not directly ground the speaker cords; do not share 

the negative leads of multiple speakers. 

  When using the RCA cords, keep away from the 

speaker cords. 



  Use speakers with a suitable maximum input. 
  In case of 4-channel/3-channel connection 

  Use speakers with the impedance of 2

8 .

  In case of 2-channel/stereo connection:

  Use speakers with the impedance of 4

8 .