Eaw UX8800 User Manual download pdf (Page 33)

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.

Page 23

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

external cause

Disconnect the ac mains from the unit. Using a small screwdriver gently pry out the small 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 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

internal failure

Disconnect the ac mains from the unit. Using a small screwdriver gently pry out the small

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

lights

Incorrect settings

Check to be sure that all signal processing functions, especially gain controls, are correctly set

for the intended application and that input and output channel source source assignments are

correct.

No input and/or output meter

lights

Internal failure Internal failure is possible. The UX8800 should be repaired by qualified service personnel.

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

lights on some or all channels

Incorrect configuration Check that the output(s) is assigned an Input Channel Signal Source.

No output and no output meter

lights on some or all channels

Incorrect settings Check to be sure that all signal processing functions, especially gain controls, are correctly set

for the intended application.

Strange malfunction(s), LCD

display corrupt, or any of the

above symptoms in this chart.

Digital lock-up Power off, wait 10 seconds, then power on the processor to reset the digital electronics.

Panel is locked and forgot Pass

Code

Alzheimers or equivalent

Reset the processor, contacting the factory for details on how to do this. WARNING: This

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

does not work

Network connection faulty Check the network LED indicators to determine the connection status. For indicator details, see

Chapter 8. This may help to determine the corrective action needed.

Ethernet connection does not

work

Incorrect cable For direct connection to a computer, you must use the supplied Ethernet crossover cable or or

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

work

IP address is incorrect For a direct connection to a computer, set the IP address in the UTIL menu to static. Manually

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

work

IP address is incorrect For a connection to an Ethernet network, set the IP address in the UTIL menu to dynamic.

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

for EAWPilot control

Cable problem Check that the cabling is a standard or crossover CAT-5 Ethernet cable and that the cable is

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

for audio

Audio signal(s) not assigned to

the U-Net channels

Sending and receiving audio over U-Net requires assigning Input Channel and Output 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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Eaw UX8800 User Manual Page 33

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