RearviewSafety RVS-7500 - Manual (Page 57)

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Chapter Five Simple Problem shooting and maintenance
IF your GPS navigator cannot work normally, please check it as follows. If you
cannot solve the problem, please contact our service center.
Reason Reason Solution
Can not turn on the
navigator
Lack of power Charge the battery
The device turn off
suddenly
Low battery Charge the battery
The back light is not
bright enough
Adjust the backlight
Can not display clearly
The back light has
been turned off
Click the LCD; the screen will turn
bright again.
No response when
clicking the button
The touch-screen is
not calibrated
Calibrate the touch-screen