F3 Field Service Manual – Level 1 Maintenance
Page 11
2.2.7. Earset Test
•
Plug the earset into the detector as follows:
o
Undo the dustcaps from the Earset plug and Earset socket on the
detector. As shown in the following figure, gently hold the Earset plug
by the collar, and align the plug (raised dot on plug should be
uppermost) to the Earset socket before firmly sliding the collar onto
the socket.
Figure 6 Fitting the Earset
•
Ensure that the threshold tone is audible at the earphone.
•
If an earset ‘speaker on’ (4523-0027) is being tested, ensure that the
threshold tones can still be heard from the detector loudspeaker.
•
If an earset ‘speaker off’ (4523-0025), green tubing on earset cable near
plug) is being tested, ensure that the threshold tones cannot be heard from
the detector loudspeaker.
•
If a volume control is fitted to the earset cable, ensure that it operates
correctly.
•
If any faults are found, go to Section 4.6 for faultfinding procedures, or
replace the earset.
•
Turn the detector off.
2.2.8. Battery Cable Test (if supplied)
•
Remove the battery pack from the detector.
•
Connect the battery pack to the detector using the battery pack extension
cable.
•
Turn the detector on and repeat the Test Piece test.
•
If the detector fails to function properly with the battery cable connected,
replace the battery cable as it is not repairable.
•
Turn the detector off, disconnect the battery pack extension cable and refit
the battery pack.
Functional testing has now been completed.
Remove the batteries from the battery pack.
Pack the detector and all accessories into the hard case.
