Minelab MF5 Service Manual page 11

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e. LED Test. The LED test confirms the visual display (LEDs) can be enabled and disabled. To
conduct the test:
•
Turn on the detector.
•
The MF5 will disable the LEDs by default. Short press the LED Display button to enable the
LEDs. Short press again to disable the LEDs.
•
If LEDs are not visible, long press the LED Display button to toggle LEDs between IR
(infrared, for use with night vision imaging systems) and visible light.
•
Whilst in Detection mode, with the LEDs enabled, pass the coil over a metal object and
check that an increasing number of LEDs illuminate as the detection tone increases in
volume.
f. Battery Level Test. The battery level test confirms the MF5 provides an indication of
battery status and is conducted as follows:
•
Turn on the detector and enable the LEDs.
•
Long press the Noise Cancel button confirming battery status is indicated on the LED
display for three seconds.
•
After three (3) seconds the battery level indicator will extinguish and normal operation will
resume.
•
If the LED display is not visible, ensure LEDs are enabled and operating with visible light.
g. Sensitivity Control Test. The sensitivity control test confirms the sensitivity of the MF5 can
be adjusted and is conducted as follows:
•
Set the sensitivity to the default position 3 in either IED or Conventional operations.
•
Turn on the detector.
•
Conduct the test piece test. Check that a faint but clear audio tone is heard and that more
than one LED illuminates.
•
Decrease the sensitivity of the MF5 by rotating the sensitivity knob to position 2. A single
low pitched beep will be heard to prompt the operator that the sensitivity is being
decreased.
•
Conduct the test piece test again and ensure no audio or LED response occurs.
•
Move the sensitivity knob to position 3 and confirm a double beep occurs. This prompts
the operator that default sensitivity (position 3) has been selected.
•
Rotate the sensitivity knob to position 4 and confirm that a high pitched beep is heard.
•
Conduct the test piece test and confirm that a louder audio response and an increased
number of LEDs are illuminated compared to the previous position 3.
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MF5 Service Manual