6.TROUBLESHOOTING
■If you think that something is wrong with your unit, check the following points before requesting servicing.
| Problem | Cause | Action |
No image display. | The parking brake is not set. | Check that the parking brake is set. |
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| Vehicle is moving. | No video is displayed on the unit while driving. Park |
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| the vehicle before playing this unit. (Set the parking |
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| brake.) |
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| No TV mode (function). | To watch TV, press the source button and check that |
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| the TV screen is now set. |
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| Monitor is at OFF. | Press the power button or another button to turn on |
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| the monitor. |
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Poor or blurred | Poor antenna receiving | Reception is blocked by mountains or buildings. |
image. | conditions. | Check reception again at a place where radio waves |
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| can be received properly. |
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Display is too dark. | The brightness control is too | Adjust the brightness properly. |
| low. |
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| Poor operating conditions. | The temperature inside the vehicle might be 0°C or |
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| lower. Set to an appropriate temperature (25°C or |
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| so) and check it again. |
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| Vehicle headlights are on. | The display is designed to darken at night to prevent |
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| glare from headlights. |
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| Display also darkens if the headlights are used in the |
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| daytime. |
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Display color is weak | The color is not adjusted | Check that COLOR and HUE are adjusted properly. |
or poor face color. | adequately. |
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The TV tuner has a | Bad receiving conditions. | Possible poor antenna reception due to mountains or |
double or triple |
| buildings, etc. |
image. |
| Check again in a different location and position. |
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Spots or stripes in | Other signals are interfering | Possible signal interference from other vehicles, |
image. | with reception. | power lines, streetcars, etc. Check reception later |
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| after changing your location. |
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No sound. | Volume is too low. | Volume level might be set at minimum. Adjust once |
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| more. |
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English
TB851P/TB853W 19