Rockford Fosgate 4-CHANNEL AMPLIFIER owner manual Troubleshooting, Problem, Solution

Page 28

TROUBLESHOOTING

Problem

Amplifier will not play – Remote turn-on light is off.

Solution

1.Check the DC voltage at the amplifier's B+ terminal with a voltmeter. The voltage should measure be- tween 11.5V - 15.5V.

If voltage is not found, check the battery, fuse, fuse housing and wire connections. Fix, repair, or replace accordingly.

2.If the amplifier still does not play, check the voltage at the amplifier's remote turn-on lead. The voltage should measure between 11V - 15V.

a.If voltage is above or below the prescribed mea- surements, have the head unit checked by an Authorized Dealer or Service Center.

b.If the remote turn-on current draw from the head unit is connected to multiple amps and/or electron- ics, the current draw may be too great. Check for proper connections. (Use a relay to suppress the excessive current draw.)

If you are still having problems, have the amplifier checked by an Authorized Rockford Fosgate Dealer.

Problem

Amplifier will not play – Remote turn-on light is on:

Solution

1.Unplug the head unit and test the amplifier with an- other working source unit (i.e., bench-test radio, walkman, etc.) If the amplifier plays, check the in-dash leads for cuts, breaks and/or shorts.

2.If the amplifier still does not play, disconnect the existing speakers and connect a set of test speakers to the output of the amplifier (any type of speaker will do - i.e., simple home box type, bookshelf, raw speaker, etc.). If the amp plays, check for shorts or blown voice coils in the vehicle's speaker system.

If you are still having problems, have the amplifier checked out by an Authorized Rockford Fosgate Dealer.

25

Image 28
Contents DSM Practice Safe Sound Table of Contents Specifications Punch 4080DSM Punch 4040DSM Punch 4-CHANNEL Accessory Pack Introduction Controls and Features Top View of Amplifier and End CapsPower/REM/LED Side +/GNDInput/Output Terminal Side Installation Considerations Battery and Charging Wiring the Punch Mounting and LocationWire Strip back approximately 3/8 1cm of insulation Ground Remote Turn-on Input Page Page Table of Component Values Speaker ImpedanceActive Crossover Mode Selection Frequency Settings Sample Wiring Diagrams Bridged MONO/BI-AMPLIFIEDChannel Bridged Stereo 4Ω Subwoofer BI-AMPLIFIED Stereo Channel with Bridged Subwoofer Channel with Subwoofer AMP Bridged Mono Problem TroubleshootingSolution Amplifier gets too hot Engine Noise Whine Dynamic Power Measurements About the Dynamic Power MeasurementsMusic Listening to Loudspeakers Not ResistorsAudio Graph The PowerCube Information CubedWhat is an Amplifier? Warranty Information Rockford Fosgate