EXFO TG-300B Tone Generator - Manual (Page 16)

Maintenance 11
3 Maintenance
To help ensure long, trouble-free operation:
³
Keep the unit free of dust.
³
Clean the unit casing and front panel with a cloth slightly dampened with water.
³
Store unit at room temperature in a clean and dry area. Keep the unit out of
direct sunlight. Always keep the switch in the upward position and the
protective cap on the head of the unit while in storage.
³
Avoid high humidity or significant temperature fluctuations.
³
Avoid unnecessary shocks and vibrations.
³
If any liquids are spilled on or into the unit, turn off the power immediately and
let the unit dry completely.
Replacing the Four AA Batteries
When the batteries become low, the ON/OFF and battery status LED blinks. The unit
is still operational, but you should replace the batteries as soon as possible or
connect the unit to the AC adapter.
When the batteries are too low, bAT appears on the display and the unit releases the
fiber under test.
To replace the four AA batteries:
1. Push the switch upward.
2. Remove the cover of the battery compartment located at the back of the unit.
3. Replace all the batteries, respecting the polarity.
4. Replace the cover of the battery compartment.
Note: If the batteries die while operating your unit, the fiber is automatically
released. However, the switch remains in the downward position. You
must slide the switch upward to release the switch mechanism.
W
ARNING
Use of controls, adjustments, and procedures for operation and
maintenance other than those specified herein may result in
hazardous radiation exposure.