17 troubleshooting, Solving common problems – EXFO VDSL2 User Manual
Page 255
Copper, VDSL2, ADSL2+ and IP Triple-Play Test Set
247
17 Troubleshooting
Solving Common Problems
The table below presents common problems and their solution.
Problem
Possible Cause
Solution
Impossible to turn on unit.
³
You did not press
long enough.
³
Main batteries
discharged.
³
Battery compartment
door is open.
³
One of the two
batteries is missing.
³
Weather too cold.
³
Press for 2 seconds.
³
Charge batteries by
connecting the AC
adapter/charger.
³
Close battery
compartment door.
³
Insert 2 batteries and
replace battery
compartment door.
The display is almost blank
when you turn on the unit.
Brightness may need some
adjustment.
Press
to adjust brightness
properly.
Batteries do not charge as
expected.
³
Temperature is too
high.
³
Battery is incorrectly
connected.
³
Ensure temperature is
within specifications.
³
Ensure battery is
connected properly.
A battery status LED is
yellow.
Battery is defective.
Contact EXFO or replace the
battery.
The unit is not responding.
Shut down the unit by
pressing
and holding it
down.
You will hear a first beep;
release the key after you hear
a second beep.
Turn the unit on again to
reset it.