Directed Electronics HCCA-D1200 Troubleshooting Tips, Symptom Probable Cause Action To Take

Troubleshooting Tips

Symptom	Probable Cause	Action To Take
No output
	Low or no remote turn-on	Check remote turn-on voltage
		at voltage amplifier and repair
		as needed.
	Fuse blown	Check power wire's integrity
		and check for speaker shorts. Fix
		as needed and replace fuse.
	Power wires not connected	Check power wire and ground
		connections and repair or
		replace as needed.
	Audio input not connected	Check RCA connections and
		repair or replace as needed.
	Speaker wires not	Check speaker wires and repair
	connected	or replace as needed.
	Speakers are blown	Check system with known work
		ing speaker and repair or
		replace speakers as needed.
Audio cycles
on and off
	Thermal protection engages	Make sure there is proper venti
	when amplifier heat sink	lation for amplifier and improve
	temperature exceeds 90°C	ventilation as needed.
	(190°F)
	Loose or poor audio input	Check RCA connections and
		repair or replace as needed.
	Loose power connections	Check power wire and ground
		connections and repair or
		replace as needed.
Distorted output
	Amplifier level sensitivity	Readjust gain. Refer to the
	set too high exceeding	Adjusting the Sound of the
	maximum capability of	System section of this manual
	amplifier	for detailed instructions.
	Impedance load to amplifier	Check speaker impedance load,
	too low	if below 1W, rewire the speakers
		to achieve higher impedance.
	Shorted speaker wires	Check speaker wire connections
		and fix or replace as needed.
	Speaker not connected	Check speaker wiring and repair
	to amplifier properly	or replace as needed. Refer to
		the Speaker Connections section
		of this guide for detailed
		instructions.

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