TeleType Company WORLDNAV 7300 - Manual (Page 14)

Part
IV
Hardware User Guide
28
© 2010 TeleType GPS
4 Troubleshooting
Problem Reason Solution
GPS will not
power on
Lack of power
Plug in the device to AC
or DC power
Power is off Press the Power button
Screen is too
dark
The backlight is
not bright enough
Adjust the backlight to a
brighter setting
The backlight has
been turned off
Touch the screen and
screen will turn on
Touch screen
function is
abnormal
Touch screen
calibration is off
Use System Tools to
recalibrate the screen
No Sound
The volume level
is at its lowest
setting
Increase the volume
using the WorldNav
software or the
hardware system
settings
Poor connection
between
earphones and
device
Check the connection to
the earphones