Replacing the battery, Checking the lcd display, Reverting to the default settings – EXFO FVA-600 User Manual

Page 23: Arning

FVA-600

Replacing the Battery

Your unit requires one Li-Ion battery.

To replace the battery:
1. Turn off the unit (if the AC adapter is plugged in,

you may replace the batteries while unit is on).

2. Open the battery compartment door located at the

back of the unit.

3. Replace batteries respecting the polarity.
4. Close the battery compartment door.

Checking the LCD Display

If you suspect that part of the LCD display is not lighting up properly, you can
perform a test to light up all segments at once.

To check the LCD Display:
1. When the unit is on, press and hold

and

simultaneously.

2. Press any button to exit the LCD check mode.

Reverting to the Default Settings

You can revert to the default settings for the following parameters in one step:

Preselected wavelengths

Smallest step size in use

Backlight off

Use absolute operation mode

To reset the values:
When the unit is on, press and hold

and

ARNING

Do not throw batteries into fire or water and do not short-circuit
the batteries’ electrical contacts. Do not disassemble.

Abs/

Rel/

Pwr

Select