EAW UX8800 owner manual Troubleshooting, Symptom, Probable Cause, Corrective Action, Page

11 TROUBLESHOOTING

Troubleshooting a malfunctioning UX8800 consists primarily of determining if it is incorrect settings, faulty or incorrect connections, or an electronic failure requiring service. This table lists some possible trouble symptoms, causes, and corrective actions.

Symptom	Probable Cause	Corrective Action
No power light	Power cord disconnected	Ensure the power cord is properly connected at both ends and that the ac mains is working.
No power light	Rear panel power switch is off	Turn the power switch on.
No power light	Improper ac mains voltage	The UX8800 is deigned for an ac mains voltage between 100 V and 240 V, 50 Hz to 60 Hz. If outside
		these ranges, the UX8800 may fail to operate or become damaged.
No power light	ac mains fuse is blown due to an	Disconnect the ac mains from the unit. Using a small screwdriver gently pry out the small drawer
	external cause	that is part of the rear panel ac mains connector.Check the fuse located on the right hand side. If the
		fuse is blown but glass remains essentially clear, this can indicate a faulty fuse or temporary external
		event, such as an excessive ac mains voltage spike. Replace the fuse with the supplied spare
		replacement fuse located on the left side of the drawer. If the fuse blows again, it indicates an
		internal failure and the UX8800 should be repaired by qualified service personnel.
		Replacement Fuse: 4 A, slow-blow, 5 mm x 20 mm, 250V IEC
No power light	ac mains fuse is blown due to an	Disconnect the ac mains from the unit. Using a small screwdriver gently pry out the small
	internal failure	drawer that is part of the rear panel ac mains connector.Check the fuse located on the right hand
		side. If the fuse is blown and the glass is heavily blackened, this usually indicates an internal
		failure. Do not replace the fuse. The UX8800 should be repaired by qualified service personnel.
No input meter lights	Incorrect settings	Check to be sure that:
		1. The correct input signal type has been selected in the UTIL menu for Inputs A&B and Inputs
		C&D.
		2. Signal sources have been assigned in the CH menu for Channels A to D.
No input meter lights	No signal	Check to be sure there is signal from the source feeding the UX8800.
No input meter lights	Cables disconnected or faulty	Check the input cables to the UX8800 for faults or mis-wiring.
No input meter lights	Internal failure	Internal failure is possible. The UX8800 should be repaired by qualified service personnel.
No input and/or output meter	Incorrect settings	Check to be sure that all signal processing functions, especially gain controls, are correctly set
lights		for the intended application and that input and output channel source source assignments are
		correct.
No input and/or output meter	Internal failure	Internal failure is possible. The UX8800 should be repaired by qualified service personnel.
lights
No output but meter lights work	Mutes are engaged	If the the output meters are functioning and there is no output, check to be sure that the output
		mutes are not activated. The meters function independently of the mute switch.
No output and no output meter	Incorrect configuration	Check that the output(s) is assigned an Input Channel Signal Source.
lights on some or all channels
No output and no output meter	Incorrect settings	Check to be sure that all signal processing functions, especially gain controls, are correctly set
lights on some or all channels		for the intended application.
Strange malfunction(s), LCD	Digital lock-up	Power off, wait 10 seconds, then power on the processor to reset the digital electronics.
display corrupt, or any of the
above symptoms in this chart.
Panel is locked and forgot Pass	Alzheimers or equivalent	Reset the processor, contacting the factory for details on how to do this. WARNING: This
Code		process will reset ALL parameters to the factory default settings, erase all programs stored in
		Loudspeaker Processor memories, and erase the existing Pass Code.
Ethernet and/or U-Net connection	Network connection faulty	Check the network LED indicators to determine the connection status. For indicator details, see
does not work		Chapter 8. This may help to determine the corrective action needed.
Ethernet connection does not	Incorrect cable	For direct connection to a computer, you must use the supplied Ethernet crossover cable or or
work		an equivalent user-supplied cable. For a connection to an Ethernet hub, switch, or router, you
		must use a user-suppled, standard Ethernet cable.
Ethernet connection does not	IP address is incorrect	For a direct connection to a computer, set the IP address in the UTIL menu to static. Manually
work		assign the IP address by determining the computer’s IP address, making the first three number
		groups the same as the computer’s, and making the fourth number group unique to the UX8800.
Ethernet connection does not	IP address is incorrect	For a connection to an Ethernet network, set the IP address in the UTIL menu to dynamic.
work		Power off and then power on the UX8800. If a DHCP server is present, it should assign an IP
		address to the UX8800. If it fails to find an address, set the IP address to static and manually
		assign it an IP address, making the first three number groups the same as the other devices on
		the network and making the fourth number group unique to the UX8800.
U-Net connection does not work	Cable problem	Check that the cabling is a standard or crossover CAT-5 Ethernet cable and that the cable is
for EAWPilot control		functioning correctly. The U-Net ports auto-sense the cable configuration. The supplied Ethernet
		crossover cable can be used for interconnecting U-Net ports. Note: Control signals are
		automatically sent and received over U-Net connections.
U-Net connection does not work	Audio signal(s) not assigned to	Sending and receiving audio over U-Net requires assigning Input Channel and Output Channels
for audio	the U-Net channels	to the desired U-Net channels. In other words, there must be signals assigned to be sent over a
		U-Net channel in order to receive signals on that U-Net channel. Use the CH U-Net Output
		function for the Input Channels and Output Channels to send signals to U-Net channels. Use the
		CH Src function for the Input Channels to receive U-Net signals from U-Net Channels.

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