Electro-Voice 2.1P user manual Appendix D Troubleshooting Guide, Problem, Possible Causes, Action

Appendix D: Troubleshooting Guide

Problem	Possible Cause(s)	Action
1. No sound	Amplifier	Verify that that the line level signal cable’s
		XLR connector has been pushed all the way
		into the ‘Low Level In’ jack on the amplifier
		panel. Turn the ‘Power’ switch on and the
		volume up until you can hear sound emitting
		from the 12.1p subwoofer. If there is still no
		sound, the problem is with the line level
		signal.
	Line level signal	Connect a known working powered test
		speaker to the line level signal from the
		mixer, pre amplifier or other source. If there
		is no sound, check that all of the electronics
		are on, the signal routing is correct, the
		source is active, the volume is on and so on.
	Fuse	Carefully remove the fuse holder from the
		power cord input with the use of a flat head
		screwdriver. Inspect the fuse for any
		damage. Blown fuses will typically show a
		smoke-like blackening on the inside of the
		glass. If this is the problem, replace the fuse
		with a 4A/250V, 20mm x 5mm fuse.
		Only replace this fuse with the same type
		and rated fuse to reduce the risk of fire.
2. Poor low-frequency	Speakers wired	When two speakers are connected out
response	out-of-polarity	of polarity (out of phase), the low frequencies
		will cancel each other acoustically. Carefully
		observe the wire markings or tracers on your
		full-range speaker wires. Verify that their
		amplifier (+) terminal is connected to the red
		speaker terminals and their amplifier (-)
		terminal is connected to the black speaker
		terminals.
3. Intermittent output	Faulty	Check the low-level signal cable/XLR
such as crackling or	connection/wiring	connector to make sure that it has been
distortion		pushed all the way into the ‘Low Level In’
		amplifier panel jack. If crackling persists,
		remove the signal cable from the amplifier
		and its low-level signal source and check for
		a faulty connection between the connector
		and the cable. Make sure that all of the
		terminals on cable connectors have been
		properly soldered.
If these suggestions do not solve your problem, contact your nearest Electro-Voice
	dealer or Electro-Voice distributor.
Electro-Voice®￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿		11