Minelab MF5 Service Manual page 13

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k. Test Piece Test. The test piece test is a critical test and shall be conducted last to confirm
the correct detection performance of the MF5. 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
metal objects are near the coil.
•
Set the sensitivity control to the default position 3 indicated by the yellow triangle then
switch on the MF5.
•
Hold the test piece above the middle of the coil with the metal end of the test piece away
from the coil.
•
Hold the test piece perpendicular to the bottom of the coil and smoothly move the test
piece across the coil from one side to the other.
•
Confirm a faint but clear response (detection tone) is heard. With the LED display enabled
the test piece procedure should result in the illumination of at least one LED.
•
If the test piece is not heard, Factory Reset the detector and repeat the test.
•
If the test piece is still not heard, refer to section
l. Provided the MF5 passes all function tests it is serviceable and ready for operations If the
detector does not pass all functional tests refer to section
Figure 6: Test Piece Procedure
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MF5 Service Manual
Fault Finding Procedures.
Fault Finding Procedures