RoyalTek NS-4102 - Manual (Page 41)

6.1.7 No sound coming from the device.
9 Make sure mute is not selected for Volume in system settings. The built-in
speaker turns off when the headphone jack is being used.
6.1.8 Cannot see photos.
9 Make sure you are using supported image formats JPG.
6.1.9 Take longer than normal time to get a GPS fix.
9 If the previous GPS fix position was more than 500 km or 12 hours apart
from your current position and time, it will also take significantly longer than
the standard TTFF time to get a GPS fix. This is due to the nature of the
GPS algorithm and rotational velocity between the satellites and planet
Earth, and deemed normal.
9 Perform a GPS reset in the main/system/system info menu to get a faster
GPS fix.
6.1.10 Factory reset does mean a GPS reset.
9 Yes. The Factory Reset function resets the OS settings to their default
factory values and it will reset the GPS settings.
6.2. Maintenance
9 Avoid exposing your device to direct sunlight or strong ultraviolet light for
extended periods of time.
9 Do not drop your device or subject it to severe shock.
9 Do not subject your device to sudden and severe temperature changes.
This could cause moisture condensation inside the unit, which could
damage your device. In the event of moisture condensation, allow the
device to dry out completely before use.
9 The screen surface can be easily scratched. Sharp objects may scratch
the screen. You may use non-adhesive generic screen protectors
designed specifically for use on portable devices with LCD panels to help
protect the screen from minor scratches.
9 Never clean your device with it powered on.
9 Never use organic solvents such as benzene or paint thinner to clean your
device. Use of these solvents can cause deformation or discoloration.
9
Use a soft, clean, lint-free cloth to clean the display screen. Moistened
9
LCD screen wipes could also be used as required.
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