Figure 14 Position Of Crystals In An Ultrasound Transducer; Figure 15 Testing The Crystals In An Ultrasound Transducer - Philips FM-2 Service Manual

Chapter 8 - Test and Inspection Matrix
7. The transducer contains seven piezo-electric crystals.
Figure 14 Position Of Crystals in an Ultrasound Transducer
8. Holding the transducer in one hand, move a flat-bottomed pencil or
similar object repeatedly towards and then away from each crystal. The
distance between the pen and the transducer surface should be about 2 to
3 cm.
Figure 15 Testing the Crystals in an Ultrasound Transducer
9. Check that a noise is heard from the loudspeaker for each crystal.
Testing Transducers
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