AMI NiteHAWK Owner's Manual Page 70

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Troubleshooting NiteHAWK Internet Jukebox
7-2 22022613 Rev A
Power Supply Board
+9 V LED
Should be on. Indicates +9 VDC is available at the Power Supply.
+12 V LED
Should be on. Indicates +12 VDC is available at the Power Supply.
+24 V LED
Should be on. Indicates +24 VDC is available at the Power Supply.
4-Channel Pre-amplifier
Power LED
Should be on. Indicates when all 4 voltages are present (+5 V, +8.5 V, +15 V, –15 V).
Status LED
On Power Up (Power applied to the 4-Channel Pre-Amplifier) this LED flashes 3 times.
Rowelink LED
Should be flashing **. Flashes when the 4-Channel Pre-Amplifier sends an RL signal back to the
Computer Core. Rate is approximately twice per second.
Volume Control Unit
Period LED (on the 10s digit)
Should be dimly flashing ** at a relatively fast rate. Indicates when Rowelink Master Commands are
sent from the Computer Core via the Computer Core.
Period LED (on the 1s digit)
Should be dimly flashing ** at a relatively fast rate. Indicates when the Volume Control sends an RL
signal back to the Computer Core.
Power Amplifier
Yellow Clip LED
Should be off. If on, the input signal to the Power Amplifier is too high, which will cause the output
signal distortion to increase.
Red Overload LED
Should be off. If on, the speaker outputs are overloaded.
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