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Chapter IV Trouble shooting
Trouble
Insufficient battery
Unable to start up
capacity
Sudden cutoff of
Insufficient battery
power
capacity
Unable to display/
Too low backlight
recognize
displayed content
Auto close of
backlight
No proper response
Touch screen has
for clicking a icon
no calibration or
accidental failure
Too low volume
No sound for
playing
Poor connection
of earphone
Fails to connect with
Improper connection
computer
by USB cable
Fails to receive
GPS signal
Loss of map data
Cause
Use external power for the device
and charging the battery
Use external power for the device
and charging the battery
Refer to Section 3.2, adjust backlight
Tap LCD screen by touch pen, and
the screen becomes bright.
1, make a new calibration
2, press reset button to restart.
Increase volume
Insert earphone properly
Refer to section 1.5, properly
connect USB cable
Subject to local GPS satellite signal
strengthen, signal receiving requires
more than 3 minutes.
Contact the agent or dealer.
14
GP 135 User's Manual
Solutions
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