Daktronics SPORTSOUND 1500HD, Руководство по установке

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Troubleshooting
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It’s possible that the coil is perfectly fine on cone drivers (mids and lows), but the spider,
diaphragm, or surround is damaged, eliminating or restricting the cone from moving
in and out. Visually check the surround and make sure it is in good condition. It may
be necessary to remove the driver from the speaker assembly. Carefully push on the
diaphragm and see if it can move in and out to verify the driver is not seized. Apply a 9V
battery to the driver terminals and listen for any rubbing or stuck coils.
If the driver checks out fine, further troubleshooting of the system is required.
Note: Daktronics speaker assemblies have drivers wired in parallel. Use the following
chart when measuring the DC resistance of a harness. Refer to Figure 22 for
harness connector pinout.
Harness Channel 1 Channel 2 Channel 3
Amp 1 Pins 2-3 = 2.1 Ω - Pins 5-6 = 2.1 Ω
Amp 2 Pins 2-3 = 3.2 Ω Pins 1-4 = 3.2 Ω -
Amp 3 Pins 2-3 = 3.2 Ω Pins 1-4 = 3.2 Ω -
Amp 4 Pins 2-3 = 3.2 Ω Pins 1-4 = 3.2 Ω -
Amp 5 Pins 2-3 = 3.2 Ω Pins 1-4 = 3.2 Ω -
Amp 6 Pins 2-3 = 3.2 Ω Pins 1-4 = 3.2 Ω -
Amp 7 Pins 2-3 = 3.0 Ω Pins 1-4 = 3.0 Ω -
Amp 8 Pins 2-3 = 3.0 Ω - -
Amp 9 Pins 2-3 = 3.0 Ω Pins 1-4 = 3.0 Ω -
Amp 10 Pins 2-3 = 3.0 Ω - -
6
Amp 1
Channel 3
5 4
1 2 3
Channel 2
6
Amps 2–7, Amp 9
Channel 1
5 4
1 2 3
6
Amp 8, Amp 10
Channel 1
5 4
1 2 3
Channel 1
Figure 22: Harness Connector Pinout