Clarion APX1301E, APX4241E Troubleshooting, No Audio, Audio cycles on and off, Distorted audio

6. TROUBLESHOOTING

No Audio

•Low or no remote turn-on voltage: check remote connections at the amplifier and source unit.

•Blown amplifier fuse: replace with a new fast-blow fuse (same rating).

•Power wires not connected: check battery and ground wiring at the amplifier and check the battery connections.

•Speaker leads shorted: check speaker continuity to ground; it should not show a common ground.

•Speakers not connected or are blown: check speaker connections at the amplifier; measure coil impedance.

Audio cycles on and off

•Thermal protection circuits are shutting the amplifier off.

•Check the location for adequate ventilation. Consult an authorized Clarion audio dealer.

Distorted audio

•Gain is not properly set or the speaker cones are damaged.

•Review the instructions for setting the gain. Inspect each speaker cone for signs of damage, such as a frozen cone, burning smell, etc.

Amplifier fuse keeps blowing

•The wiring is connected incorrectly or there is a short circuit.

•Review the installation precautions and diagram in this manual and check all wiring connections.

Whining or ticking noise when engine on

•The amplifier is picking up alternator or radiated noise.

•Turn down input gain.

•Move the audio cables away from the power wires.

•Check the power and ground connections on the amplifier and install an in-line noise filter on the source unit’s power wire.

•Check the alternator and/or voltage regulator. Test for a weak battery or add water to the battery.

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