Exfo FTB-1 Instrukcja Użytkownika Strona 205

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FTB-1 195
12 Troubleshooting
Solving Common Problems
Problem Cause Solution
Unit does not turn on. Battery is discharged. Charge the battery.
Replace the battery with a fully
charged one.
Connect the unit to an external
power supply using the AC
adapter/charger.
Unit is not connected
to an external power
supply.
Connect the unit to an external power
supply using the AC adapter/charger.
External power supply
is disconnected.
Make sure the external power supply
is connected at both ends.
Unit screen
is dark.
Unit’s backlight is off. Press the backlight button.
Battery is discharged
and unit has shut
down.
Charge the battery.
Replace the battery with a fully
charged one.
Connect the unit to an external
power supply using the AC
adapter/charger.
At logon, no scroll bar is
displayed to browse
through all user
accounts.
--- Select any of the user accounts that
you can see on screen, and then
press the down arrow (from the unit’s
keypad) to go to the next account.
Use the up/down arrows to browse
through the accounts.
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