EAW SB730 - Manual (Page 14)

Page 14 of 16 EAW KF730 & SB730 PRELIMINARY OWNER’S MANUAL
8. TROUBLESHOOTING AND SERVICE
8.1 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.
8.2 RIGGING
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.
8.3 BASIC TROUBLESHOOTING
Each KF730 Series loudspeaker has an input panel, internal components and wiring, two or four
transducers, and an enclosure. Troubleshooting a KF730 or SB730 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.
8.3.1 Transducers
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.
8.3.2 Input 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.
8.3.3 Enclosures
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.
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