Lowrance M52 S/GPS, Installation And Operation Instructions Manual

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NOTE:
When the unit is not in use, we recommend you unplug the power
connector to reduce the possibility of corrosion or battery drain.
When you store the unit, always remove the batteries because dead
batteries can leak and corrode the contacts.
After installing the batteries, plug the cable's power connector into the
socket on the battery compartment cover. Route the cable's unit connec-
tor and about 6 inches of cable through the opening under the sonar
mount. Close the cover, plug the connector into the sonar unit and
mount the unit on the built-in bracket.
PPP-12 Portable Power Pack with a sonar unit stowed for transport.
Turn the unit on. If it doesn't work, make sure the battery terminals
are making good contact against the battery contacts. Also check the
wiring connections on the battery adapter. The red wire on the power
cable should be attached to the red wire on the battery adapter and the
power cable's black wire should be connected to the black wire on the
battery adapter.
If it still doesn't work, check the battery voltage. Most of the complaints
we receive about portable units result from stale batteries. Make sure
the ones you buy are fresh.
In cold weather the efficiency of dry cell batteries drops with the tem-
perature. We find it a good idea to have the sonar unit good and warm
along with the batteries before we leave home.