Raytheon RayChart 620 Operation Manual page 27

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3. Pull out the card. It will pause half way out, due to a catch to prevent
4. If required, insert a new card as described above. Remember to
it being ejected accidentally: you need to pull a little harder to pass
this point.
close the card cover so that is clicks shut, to stop water splashing
into the RayChart.
RayChart 620