EXFO MaxTester Series - Manual (Page 149)

Troubleshooting
MaxTester Series 139
Solving Common Problems
Screen characters are
dim.
Brightness is not set
properly.
Modify brightness (see Adjusting
Brightness on page 39).
Even though you have
performed a screen
calibration recently, the
screen is no longer
calibrated properly.
The unit is no longer
powered by the same
power source (battery
or AC) that was in use
at the time of screen
calibration.
Changes in the power source require
a new calibration. The new
calibration values will be kept in
memory for future use in the exact
same conditions.
Before proceeding with the new
calibration, you may want to ensure
that your unit currently uses the
power source (battery or AC) that will
be used most of the time.
For more information on how to
perform a new calibration,
see Recalibrating the Touchscreen on
page 57.
One of the applications
is not responding.
Press and hold the On/Off button a
few seconds until the unit beeps
once.
Turn the unit on again to reset it.
The unit only remains
connected to the Wi-Fi
network for a few
seconds before being
disconnected. The unit
then tries to reconnect
to the network several
times, but is
disconnected after a few
seconds each time.
There could have
been an error in the
password used to
connect to the Wi-Fi
network.
Disconnect the unit from the Wi-Fi
network (see Connecting to a
Wireless Network on page 93), and
then try to establish a new
connection with the password.
Problem Cause Solution