VM9423
TROUBLESHOOTING
| Table 8: Troubleshooting | |
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Problem | Cause | Corrective Action |
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GENERAL |
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Unit will not power on | Radio Fuse blown | Install new fuse with correct rating |
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| Car battery fuse blown | Install new fuse with correct rating |
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| Illegal operation | Press the RESET button located in the bottom right corner of the front panel |
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Remote control does not function | Battery depleted | Replace battery with new one |
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| Battery installed incorrectly | Remove battery and install correctly |
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No/low audio output | Improper audio output connection | Check wiring and correct |
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| Volume set too low | Increase volume level |
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| Improper “MUTE” connection | Review wiring diagram and check “MUTE” connection |
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| Speakers damaged | Replace speakers |
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| Heavily biased volume balance | Adjust the channel balance to the center position |
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| Speaker wiring is in contact with metal part of car | Insulate all speaker wiring connections |
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Poor sound quality or distortion | Pirated disc is in use | Use original copy |
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| Speaker power rating not compatible with unit | Connect proper speakers |
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| Speaker is shorted | Check speaker contact |
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“MUTE” wire is grounded | Check that the “MUTE” connection is not grounded and that it’s properly insulated | |
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Unit resets itself when engine is off | Incorrect connection between ACC and positive battery | Check wiring and correct |
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TFT MONITOR |
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No image | Incorrect connection to parking brake wire | Check wiring and correct |
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| PRK SW is activated and parking brake is not engaged | Stop vehicle in safe place and apply parking brake |
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Flashing image or interference appears on screen | DVD is not compatible with current video settings | Change setup to accommodate disc |
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| Improper video signal connections | Check wiring and correct |
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Prolonged image or improper height/width ratio dis- | Improper aspect ratio setup | Use correct aspect ratio setting |
play |
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Monitor stops at incorrect position | Moving path is blocked | Press OPEN key to restart monitor movement |
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TUNER |
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Weak station searching | Auto antenna is not fully extended | Connect the auto antenna control cable properly |
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| Auto antenna not properly connected | Connect the auto antenna control cable properly |
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| HD Radio broadcast is too far away | Switch to Analog tuning mode |
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CD/DVD |
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Cannot insert disc | Disc already inside unit | Eject current disc and insert new one |
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