Timex Fitness Sensor User Manual page 7

Resolving S+D Sensor Errors and Error Messages
PROBLEM
• The S+D Sensor cannot lock onto GPS satellites (Indicator light
never changes to flashing green).
• The GPS S+D Sensor loses signals from the satellites during use.
The watch may display a message that the GPS signal is weak.
SOLUTION
• Move to a more open outdoor area.
• Move away from metal objects.
• Replace the batteries in the S+D Sensor.
NOTE: The system can maintain accuracy for short periods when
GPS signals are lost.
PROBLEM
• Watch displays FATAL GPS ERROR message.
SOLUTION
• The S+D Sensor is damaged; contact Timex Customer Service.
S+D Sensor Battery Life and Replacement
The batteries in the S+D Sensor will last approximately 28 hours.
The S+D Sensor itself does not indicate the condition of its
batteries, except if the batteries are completely exhausted
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(as noted in the section "Operating the S+D Sensor"). Instead,
this information is broadcast to your watch along with your
performance data. Refer to the user manual for your watch for
the procedure to check the S+D Sensor's battery level.
Replace batteries
• Use a small slotted screwdriver or coin to loosen the screw on
back of the S+D Sensor case by turning counterclockwise. It is
not necessary to completely remove the screw. (To use a small
coin, you must first make sure that the belt clip is removed —
see p. 8.)
• Remove the case back.
• Remove old batteries and insert two (2) new AA batteries.
Observe the +/- markings inside the battery compartment to
ensure the new batteries are properly aligned.
• Replace the case back and tighten the screw by turning clockwise.
Do not over tighten. Replace the belt clip if necessary.
Maintenance
Rinse the S+D Sensor and its strap in fresh water periodically to
avoid buildup of materials that can interfere with the measurement
of your speed and distance.
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