Mechanical Testing; Function Testing - Minelab MF5 Service Manual

MF5 Service Manual
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2.1

Mechanical Testing

a. Confirm the MF5 and accessories are present and in good working order. Unpack the
detector and prepare for use. Mechanical testing and inspection include checking the following:
•
Visual inspection of the detector for any obvious signs of damage.
•
Coil movement is smooth in both axes and holds its position without drooping.
•
Shafts extend and retract smoothly and the camlocks hold the shafts firmly in location.
•
The shaft hinge moves freely when the handle is down and locks into extended position
when the handle is up.
•
The battery lid opens and locks, the battery lid tether is in good condition, and the battery
lid O-ring is clean and in good condition.
•
The handle slides up and down freely locking into position.
•
The armrest extends and retracts smoothly.
•
The armrest strap is in good condition.
•
The earset dust caps are in good condition.
•
Sensitivity knob does not turn unless lifted and rotated and then springs back into the
locked position when released.
b. The detector must pass all mechanical tests and checks to be considered acceptable for
operational use.
2.2

Function Testing

Function testing is used to confirm the serviceability of an MF5 before and after repair. The MF5
must pass all functional tests to be considered serviceable and ready for operations.
Functional testing requires a ground balance test piece. The ground balance test piece simulates
mineralised ground which results in an alarm from the detector. A mineralised "hot" rock or
adequate amount of local mineralised soil is suitable. Alternatively, a ceramic floor tile or clay
roof tile may be suitable for use as a ground balance test piece.
After preparing the MF5 for operations, complete the following tests:
a. Factory Reset. Factory reset will check that power is correctly supplied to the MF5 and
internal diagnostics discover no system fault. The detector settings are returned to the Factory
default values. The test is conducted as follows:
•
Hold the coil at least 60cm (24in) away from the ground, and away from any metal objects.
•
Ensure Sensitivity is set to Level 3 (default).
•
Press and Hold the Power Button for longer than 5 seconds (Factory Reset).
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