NorthStar 958 Operator's Manual page 19

958 Operator's Manual, Rev. A
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If a cartridge isn't installed or is installed incorrectly, the
words NONE INSERTED are shown (screen at right, below).
The cartridge name comes from its Navionics catalog number.
Not all cartridges will have a date, especially older ones; in this
case, only the word PRESENT is shown rather than the name
and date.
Before you insert the cartridge, make sure the cartridge label is
facing up and the cartridge is oriented as shown in Figure 1:
"Properly inserting a chart cartridge," below. Insert the
cartridge gently but firmly into position with one straight,
smooth motion. If you only partially insert the cartridge, stop,
then move the cartridge again, it may get stuck in an awkward
position.
NONE
INSERTED
Chapter 1 - Getting Started
Page 11