Kenwood KAC-728 Instruction Manual

Also see for KAC-628: Instruction manual Instruction manual Instruction manual Instruction manual

Contents

3Protection functionThis unit is equipped with a protection function for protecting this unit and your speakersfrom various accidents or problems that can occur.When the protection function is triggered, the Power indicator goes off and the amplifierstops operating.n Power indicator:When the power is turned on, the Power indicator lights.If the Power indicator does not light when the power is turned on, theprotection function may be activated. Check whether there is anyindication of trouble.n The protection function activates in the followingsituations:• When a speaker cable may be short-circuited.• When a speaker output contacts ground.• When the unit malfunctions and a DC signal is sent to the speakeroutput.• When the temperature of internal parts exceeds 120°C (248°F).• When a ground cable of the center unit (cassette receiver, CD receiver,etc.) or this unit is not connected to a metal part serving as anelectrical ground passing electricity to the battery's negative -terminal.Power indicatorInstallation procedure1. Remove the ignition key and disconnect the negative - terminal of the battery to prevent shortcircuits.2. Set the unit according to the intended usage.3. Connect the input and output cables of the units.4. Connect the speaker cables.5. Connect the power cable, power control cable and grounding cable following this order.6. Install the unit in the car.7. Connect the negative - terminal of the battery.• Be sure to turn the power off before changing the setting of any switch.• If the fuse blows, check cables for shorts, then replace the fuse with one of the same rating.• Check that no unconnected cables or connectors are touching the car body. Do not removecaps from unconnected cables or connectors to prevent short circuits.• Connect the speaker cables to appropriate speaker connectors separately. Sharing the negativecable of the speaker or grounding speaker cables to the metal body of the car can cause thisunit to fail.• After installation, check that the brake lamps, winkers, and wipers work properly.2CAUTION