EAW KF730 Service and Maintenance, General Service, Rigging Service, Basic Field Troubleshooting

8.SERVICE AND MAINTENANCE

8.1GENERAL SERVICE

For any faults that cannot be field-repaired as noted below, contact the EAW Service Department listed in Chapter 7 to determine the appropriate action. This applies to both warranty and non- warranty faults.

8.2RIGGING SERVICE

Because of the potential, serious consequences and liabilities due to faulty rigging, contact EAW to determine the appropriate service solution for any rigging hardware problems.

8.3BASIC FIELD TROUBLESHOOTING

Each KF730 and SB730 loudspeaker has an input panel, internal components and wiring, transducers, and an enclosure. Troubleshooting for various performance problems usually involves isolating the problem to one of these areas:

1.Transducers

2.Input panel, internal components, and wiring

3.Enclosure and integral hardware

If no problems can be traced to any of these items, look for problems with external electronics or cabling. Troubleshooting these items is beyond the scope of this manual.

8.3.1Transducers

A faulty transducer will usually cause readily audible distortions or other unwanted noises. In other cases, they may stop functioning. Use your ears and test signals or other sound source to determine which one is at fault. Normally a faulty transducer requires service or replacement by EAW.

8.3.2Input panel, Internal Components and Wiring

Faults with these items will usually cause transducers to stop working or possibly be intermittent. Check that audio signals pass from the input jacks to the transducer terminals. Many faults with this area can be field-repaired.

8.3.3Enclosures

Enclosure problems, such as loose hardware, faulty joints, or other structural problems, will usually be heard as distinct buzzes, rattles, or other unwanted noises. To test for enclosure problems, use a sine wave signal manually swept on the LF sub-system. The input level should be no more than 6 dB below rated power (equals no more than 1/2 rated voltage). It may be possible to field-repair some enclosure problems.

8.4INSPECTION

8.4.1In-Use Inspection

Visually inspect all rigging parts and enclosures each time they are used for wear, deformation, cracks, corrosion, damage, and any other condition that may affect load handling capability.

DANGER: If there is any question about the integrity or capability of any rigging part to perform its intended function, immediately remove it from service for repair or replacement.

Page 26 of 28 RD0169 (A) KF730 & SB730 OWNER’S MANUAL