Clarion DPX11500, DPX1800, APX2180, DPX2250 Troubleshooting, Indicator lights, No Audio, English

4.Increase the volume and verify that the amplifier reproduces the audio at full frequencies without distortion.

If you hear distortion check the connections and verify that the gain control is set correctly. Another cause of distortion could be underpowered or damaged speak- ers. Refer to Troubleshooting.

6.Troubleshooting

Indicator lights

The APX2180, APX4360, DPX1800 and DPX11500 have lights that indicate amplifier status.

Blue top	Red end-	Blue end-
LED	panel light	panel light	Meaning
on	off	off	Amplifier running normally
on	alternating between red and blue		In thermal protection mode
slow blink	slow out-of-sync	off	Over voltage;
	blink		reduce the input voltage
quick blink	quick in-sync	off	Short circuit protection
	blink
3 blinks, then pause	3 blinks, then pause off		Repeated shorts detected;
			remove the short circuit, wait
			5 minutes for error condition

to clear; or clear condition by removing the main power, for example, by pulling the fuse.

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 ampli- fier and measure at speakers. Measure coil impedance at amplifier with speaker wires disconnected.

English

APX/DPX Amplifiers 21