English
8. TROUBLESHOOTING
| Problem | Cause |
| Measure |
| Power does not turn on. | Fuse is blown. | Replace with a fuse of the same amperage. | |
| (No sound is produced) |
| If the fuse blows again, consult your store of | |
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| purchase. | |
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| Incorrect wiring. | Consult your store of purchase. | |
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| No sound output when | Power antenna lead is | 1. | Turn the unit off. |
| operating the unit with | shorted to ground or | 2. | Remove all wires attached to the power an- |
| amplifiers or power an- | excessive current is re- |
| tenna lead. Check each wire for a possible |
| tenna attached. | quired for |
| short to ground using an ohm meter. |
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| amplifiers or power an- | 3. | Turn the unit back on. |
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| tenna. | 4. | Reconnect each amplifier remote wire to the |
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| power antenna lead one by one. If the ampli- |
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| fiers turn off before all wires are attached, |
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| use an external relay to provide |
General |
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| voltage (excessive current required). |
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Nothing happens when | The microprocessor has | Turn off the power, then push the [PUSH OPEN] | ||
| button are pressed. | malfunctioned due to | cover to flip down. | |
| Display is not accurate. | noise,etc | Press the reset button with a thin rod. |
No sound heard. | The speaker protection 1. | Turn down sound volume. Function can |
| circuit is operating. | also be restored by turning the power off |
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| and on again. (Speaker volume is reduced |
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| automatically when the speaker protection |
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| circuit operates). |
| 2. | If the sound is muted again, consult our |
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| service department. |
26 UDB275MP