WayFinder z250 Operation Manual page 19

CHANGING THE BATTERY HEADER
and the battery. Do not disturb the
rubber seal that is resting on the case
front.
4. Remove the battery. Do not remove the
PCB; it is held in place with friction pins
and must be left in the case front to
maintain proper alignment with other
components. This is necessary to ensure
a water-tight seal.
5. Insert a new battery over the large (1/2"
round) gold pad on the PCB.
polarity as shown on PC: positive (+)
side of battery must be facing up/away
from the PCB.
Note
Three pins protrude
through the PCB and hold the battery in
place. Make sure these are intact and the
battery is situated inside these pins.
6. Replace case rear onto the case front.
Make sure the screw holes are aligned
properly since they are not symmetrical.
7. Press case halves firmly to inspect around
the rubber seal.
smooth, gap-free interface between the
plastic and rubber parts.
8. Insert case screws and tighten until the
rubber seal produces a slight bulge; this
ensures that you have applied enough
17
There should be a