User manual
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RangerX User’s Handbook
28
Troubleshooting
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Table 7 Troubleshooting (continued)
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Problem Possible causes and solution
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Display screen is blank or dicult to read Conrm that the computer is on (the Power icon is displayed
continuously in the Status area).
The brightness may be set too low, causing the screen to appear
too dark. To change system brightness, press Settings Icon, Display,
Brightness.
The video time-out may have expired. Tap the display screen to
reactivate the display.
Note: This is a normal, power-saving feature.
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Headphone or speaker volume is too low The volume may be in Mute mode or set too low. Follow the
Instruction to adjust headphone or speaker volume.
Make sure the volume control in your audio software is set to an
audible level.
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An external device is not working with the The device may need to be enabled in the computer’s congurator
computer program. Contact your local help desk or reseller.
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