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| Troubleshooting Without Diagnostics |
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| Display |
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| Problem |
| Possible Solution |
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| Screen is blank. | 1. | Monitor is not turned on and the monitor light is not on. |
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| Turn on the monitor and check that the monitor light is |
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| on. |
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| 2. | Screen save has been initiated. Press any key or move |
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| the mouse to light the screen. |
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| 3. | The cable connections are not correct. Check the cable |
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| connection from the monitor to the computer and to the |
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| electrical outlet. |
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| 4. | The brightness need adjusting. Adjust the brightness |
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| control. |
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| 5. | The energy saver feature has been enabled. Press any |
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| key or click the mouse button and, if one has been set, |
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| type the password. |
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| 6. | The RGB (Red, Green, Blue) input switch on the back of |
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| the monitor is incorrectly set. Set the monitor's input |
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| switch to 75 ohms and, if there is a sync switch, set it to |
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| External. |
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| 7. | System ROM is bad and system is running in FailSafe |
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| Boot Block mode (indicated by one long beep and three |
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| short beeps). Reflash the ROM using a ROMPaq |
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| diskette. Refer to “FailSafe Boot Block ROM” in section |
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| 3.4.3 of this book. |
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| 8. | If a |
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| can accept the same sweep rate as the resolution |
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| chosen. |
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| 9. | Ensure the VGA/BNC selector is properly set. |
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| Graphics colors are wrong. | Either the cabling or the monitor impedance is incorrect. | |
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| 1. | Ensure that the Red, Green, and Blue BNC cables are |
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| connected to the corresponding monitor connectors. |
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| 2. | Be sure the monitor's RGB inputs are set to 75 ohms. |
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| Characters are dim. | 1. | Adjust the monitor's brightness and contrast controls. |
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| 2. | Check that the video cable is securely connected to the |
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| graphics card and monitor. |
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| 3. | Set the RGB switch (and sync options, if available) to 75 |
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| ohms, with the sync set to External. Refer to the |
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| documentation included with the monitor. |
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| Monitor does not function properly | Monitor without the energy saver feature is being used with | |
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| when used with the energy saver | energy saver features enabled. Disable the monitor energy | |
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| features. | saver features. | |
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| Blurry display or requested resolution | If the graphics controller was upgraded, the correct display | |
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| cannot be set. | drivers may not be loaded. Install the correct display drivers | |
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| from the diskette included in the upgrade kit. | |
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| Service Reference Guide |