Lawrance Elite7 question

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Recently aguired a used outfit, it came with a Lawrance Elite 7 sonar unit. After getting familiar with the unit, I decided to return everything back to default to rid the unit of the previous owners settings and create my own. This unit has the down scan feature, which worked quite nicely. After going thru the default routine, I cant get the down scan system to show up. Reading the brief manual talks about using the down scan system but no mention of how to turn it on, at least not that I can find. Anyone familiar with this unit, that can give me instructions to turn on the down scan ??
Thanks in advance for anyones help....

 

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Well the downscan is on again, not sure how or why. Did two additional " return to default" settings and the downscan came back!! Not complaining, just now curious what happened.