English
9. 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 |
| amplifiers or power | excessive current is | antenna lead. Check each wire for a |
| antenna attached. | required for | possible short to ground using an ohm |
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| the amplifiers or power | meter. |
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| antenna. | |
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| 3. Turn the unit back on. | |
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General |
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| 4. Reconnect each amplifier remote wire to |
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| the power antenna lead one by one. If | |
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| the amplifiers turn off before all wires are | |
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| attached, use an external relay to provide |
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| required). |
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| Nothing happens when | The microprocessor has | Perform factory restore. Please refer |
| button are pressed. | malfunctioned due to | “Restoring to factory default setting” on |
| Display is not accurate. | noise, etc. | page 30 for more details. |
| No sound heard. | The speaker protection | 1. Turn down sound volume. Function can |
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| 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). |
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| 2. If the sound is muted again, consult our |
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| service department. |
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| Problem | Cause | Measure |
| No sound heard. | MP3 files are absent in a | Write MP3 files onto the SD memory card |
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| SD memory card. | properly. |
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| Files are not recognized | Use MP3 files encoded properly. |
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| as an MP3 file. |
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| Sound is cut or skipped. | MP3 files are not | Use MP3 files encoded properly. |
card | Noise is generated or | encoded properly. |
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noise is mixed with |
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memory | sound. |
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is not readable. | correct. | Format SD memory card as FAT12 or FAT16. | |
| SD/MMC memory card | File system format is not | |
SD |
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| Incompatible SD/MMC. | Please make sure your SD/MMC is supported | |
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| or consult your nearest Clarion dealer for SD/ |
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| MMC compatibility. |
| MP3 files are unable | Those MP3 files may | Use MP3 files encoded properly. |
| to playback, display | be corrupted or do not |
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| remains pause or | encoded properly. |
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| loading. |
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34 FB275BT / FB275BTB