F3 COMPACT Service Manual
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10
h.
LED Test
. This test confirms the visual indicator (lights) can be enabled and operate
correctly. To conduct the test:
•
Turn on the detector.
•
Pass the coil over a metal object and check no LEDs are turned on.
•
Press and release the LED button and check that a single LED is turned on when no metal
objects are near the coil.
•
Pass the coil over a metal object and check that an increasing number of LEDs illuminate
as the target volume increases.
•
Check that pressing and releasing the LED button toggles the LEDs on and off.
i.
Battery Level Test
. This test ensures that battery level indicator is operational, and is
conducted as follows:
•
Turn the detector on.
•
Press and hold the noise cancel button then press and release the LED button and then
release the noise cancel button.
•
Confirm a series of LEDs illuminate indicating the level of battery power remaining.
•
After three seconds the battery level indicator will extinguish and normal operation will
resume.
j.
Test Piece Test.
This test should be conducted in an environment that is free from
electrical interference and an earset must be connected. The test is conducted as follows:
•
Ensure hands and arms are free of metallic objects (watches, rings etc) and that no other
metallic objects are near the coil.
•
Set the sensitivity control to the default position 4 then switch on the F3 COMPACT and
confirm a steady threshold tone is present.
Figure 7: Connecting the Earset
