Minelab F3 COMPACT Service Manual page 12

F3 COMPACT Service Manual
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Conduct the test piece test again and ensure no audio or LED response occurs.
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Move the sensitivity knob to position 4 and confirm a double beep occurs. This prompts
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the operator that default sensitivity (position 4) has been selected.
Rotate the sensitivity knob clockwise to position 6 and confirm that a high pitched beep is
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heard.
Conduct the test piece test and confirm that a louder audio response and an increased
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number of LEDs are illuminated when compared to the previous position 4.
Regardless of minimum sensitivity at least one LED will remain illuminated providing an earset
Volume Control Test.
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tones emitted by the detector. The Volume Control Test ensures this function is working
correctly. Conduct this test as follows:
Switch On the detector.
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Press and immediately release the Noise Cancel button several times. On each press, the
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detector will give a low pitched beep, indicating a decrease in volume. Each press will
reduce the sound level of all tones from the detector.
Press and immediately release the LED button several times. The detector will emit a
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high pitched beep, indicating an increase in volume. All detector tones will get
successively louder with each press. A double beep is emitted when the default volume
setting is reached.
Every time the CEMD is switched On, the volume setting will revert to the default setting.
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From the default, only one increase in volume is possible. From the default, up to seven
(7) decreases in volume are possible.
k. Test Piece Test. This is a critical test and shall be conducted last to confirm the correct
detection performance of the F3 COMPACT. This test shall 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 metal objects (watches, rings etc) and that no other
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metal objects are near the coil.
Set the sensitivity control to the default position 4 then switch on the F3 COMPACT.
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Maximum sensitivity is only available 30 seconds after the completion of the start-up tones. Do
not test the F3 COMPACT with the test piece until 30 seconds after the completion of the start-up
speaker off is not connected to the F3 COMPACT.
The volume control function allows loudness variations of all
NOTE
NOTE
tones.
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