AmpliVox SW905, S905 manual Front Panel Diagram Troubleshooting

Front Panel Diagram	Troubleshooting
	Problem	Items to check
	Unit will not turn on	•	Is unit plugged in?
		•	Are batteries charged?
		•	Are fuses blown?
	Unit operates on AC but not on battery	•	Check battery terminals
		•	Check 10A fuse
	Sound is distorted	•	If “Maximum Output” is lit, turn
		•	down volume
			If using wireless mic, is red ‘Audio
			Peak’ lit? If so, signal (such as
			voice)	is	too	strong.		Move
			microphone		farther		away	from
			source.
		• Turn down			input	source (such			as
			keyboards, etc.) since the output of
			some devices may be too high
		• Check for debris on speaker cone
			(sand, etc.)
	Sound is muffled	•	Bass too high
		•	Treble too low
	Loud squealing sound coming from unit	•	“Feedback”		occurs		when		a
			microphone is too close to the
			speaker or gain is too high. Move
			microphone		farther		away	from
			speakers and/or turn down channel
			gain.
	Power is on, but no sound	•	check volume levels for each
		•	channel and main volume
			if using wireless, be sure
			receiver(s)		and/or		transmitter
		•	battery is installed and/or is on
			If using “line insert”, loop must be
			completed.		See “special features”
		•	section.
			Check speaker connection
		• If “Maximum				Output”		is	lit,
			replace power amplifier board
	Microphone signal is weak	•	If mic has batteries, check batteries
			in microphone
		• Turn		on	phantom		power		if
		•	applicable
			Check cables/connectors
		•	Is Mic/Line switch in proper
			position?

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