
| Small Size LCD/LED Monitors | Troubleshooting en 37 | 
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8Troubleshooting
| Problem | Solution | |
| No image displayed on screen | – | Check that the power cord of the monitor is | 
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 | securely connected into the wall outlet or grounded | 
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 | extension cable or strip. | 
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 | – | Power switch should be in the ON position and the | 
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 | LED lit. | 
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 | – | Check that the Brightness and/or Contrast | 
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 | adjustments of the display have not been turned | 
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 | down to minimum levels. | 
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| The message "No Signal" is | – | The signal cable should be completely connected to | 
| displayed | 
 | the video card/computer. | 
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 | – | The video card should be completely seated in its | 
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 | slot and the computer switched ON. | 
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| Display image is not | Push the down key to activate the Auto Adjust function. | |
| centered, is too small or too | - or - | 
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| large in the PC mode | Adjust the Frequency and Phase in the PC OSD submenu. | |
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| Vertical or horizontal noise is | Push the down key to activate the Auto Adjust function. | |
| present in the picture | - or - | 
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 | Adjust the Frequency and Phase in the PC OSD submenu. | |
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| Incorrect colors | Select 6500°K, 7500°K or 9300°K in the Color Tone menu. | |
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 | Use the Reset function to reset to the default settings. | |
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| The error message “Out of | PC is operating with either a resolution or timing mode | |
| Range” is displayed | that is not supported by the monitor. Change the PC | |
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 | timing mode to one of the valid combinations below: | |
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 | – | 640 x 480; 60/72/75 Hz | 
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 | – | 800 x 600; 60/72/75 Hz | 
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 | – | 1024 x 768; 60/70/75 Hz | 
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| Bosch Security Systems, Inc. | User Manual | F.01U.134.499 1.0 2009.07 |