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ENG-70
Trouble on operation
Trouble Check Items Remedy
Pressing and holding the
MODE1 or MODE2 button
does not turn on a light.
Check whether the Setup
mode is displayed (page 49).
The backlight does not turn on in the Setup
mode.
Check whether
lights up
on the wristwatch screen.
The remaining battery capacity of the wristwatch
is low. Replace it with a new battery (CR2430).
After replacement, be sure to perform the restart-
ing operation (page 14).
Pressing the SSS button
does not start/stop mea-
surement.
Check whether the auto-mode
is turned on (with
illumi-
nating).
When the auto-mode is on ( icon appears),
you cannot start or stop the measurement by
pressing the button. To start/stop measurement
by pressing the SSS button, switch the auto-
mode to off (page 58).
The heart rate sensor
(speed sensor) ID check
failed.
The battery for the heart rate sensor (speed
sensor) is possibly depleted. After replacing the
battery with a new one (CR2032), check the
sensor ID again (page 53).
Lap data cannot be stored. Check whether “--” appears
for the Lap No. screen.
The data volume exceeds the wristwatch mem-
ory capacity. Delete the files (page 45).
When using the optional “USB communication *
kit”, delete the files after you send the saved
files to your PC.
Does the lap time exceed 100
hours (or the interval distance
exceed 9999.99 km/mile) ?
Laps cannot be measured, if recordable range
described on the left is exceeded. Reset the data
(page 27), and then perform measurement again.
Is it immediately after press-
ing the LAP button?
Recording laps needs at least 5 seconds of in-
terval.
Abnormal values appear.
Are there any objects emitting
electromagnetic waves (railway
tracks, transmitting stations
for television, etc.) nearby?
Keep the unit away from any object that may be
causing interference, and reset the data (page
27).
Any setting cannot be
changed in Option mode or
Setup mode.
Is it during measurement? Settings can be only viewed during the measure-
ment.
Check whether the auto-mode
is on (
lights up).
When the auto-mode is on ( lights up), the
wristwatch may enter measurement mode due
to electromagnetic waves. Keep the unit away
from any object that may be causing interference
with electromagnetic waves.
Check whether “DATA RESET”
is displayed.
To change the target heart rate zone, measure-
ment unit, and record interval, the resetting
operation is required. Stop the measurement,
and perform the resetting operation (page 27).
The record data in the File
view cannot be viewed to
the end.
Check whether
“MEMORY FULL” is
displayed on the screen
during measurement.
The data volume exceeds the wristwatch mem-
ory capacity. The data was saved automatically
during measurement, and any subsequent data
was no longer recorded. Delete the files for
subsequent measurement (page 45).
When using the optional “USB communication *
kit”, delete the files after you send the saved
files to your PC.