| Symptom | Remedy/Cause |
| Sound is distorted. | Deactivate the equalizer either on this unit or the |
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| iPod/iPhone. |
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| A lot of noise is generated. | Turn off (uncheck) the “VoiceOver” feature of the |
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| iPod. For details, visit <http://www.apple.com>. |
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| No operations are available | Operate the unit after the Artwork is loaded. (☞ |
| when playing back a track | page 20) |
| containing Artwork. |
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| “Reading...” keeps flashing on the | Turn off the power and on again. |
| screen. |
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| While playing a track, sound is | The tracks are not properly copied into the USB |
| sometimes interrupted. | device. Copy tracks again, and try again. |
| Phone sound quality is poor. | • Reduce the distance between the unit and the |
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| Bluetooth mobile phone. |
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| • Move the car to place where you can get a better |
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| signal reception. |
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| The sound is interrupted or | • Reduce the distance between the unit and the |
| skipped while using a Bluetooth | Bluetooth audio player. |
| audio player. | • Disconnect the device connected for Bluetooth |
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| phone. |
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| • Turn off, then turn on the unit. |
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| • (When the sound is not yet restored) connect the |
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| player again. |
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| The connected audio player | Check whether the connected audio player |
| cannot be controlled. | supports AVRCP (Audio Video Remote Control |
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| Profile). |
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| Bluetooth device does not | • Check whether the Bluetooth adapter |
| detect the unit. | is inserted correctly. |
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| • Search from the Bluetooth device again. |
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| The unit does not make pairing | Enter the same PIN code for both the unit and |
| with the Bluetooth device. | target device. If the PIN code of the device is not |
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| indicated on its instructions, try “0000” or “1234.” |
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| Echo or noise occurs. | Adjust the microphone unit position. |
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| The unit does not respond when | You may have tried to copy the same entries (as |
| you try to copy the phone book | stored) to the unit. |
| to the unit. |
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58DDX418/DDX4048BT/DDX318/DDX3048