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ENG-66
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 48).
The backlight does not turn on in the Setup
mode.
Check whether lights up
on the wristwatch screen.
The remaining battery capacity of the wrist-
watch is low. Replace it with a new battery
(CR2430). After replacement, be sure to per-
form the restarting operation (page 13).
Pressing the SSS button
does not start/stop mea-
surement.
Check whether the auto-
mode is turned on (with
illuminating).
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 57).
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 52).
Lap data cannot be stored.
Check whether “--” appears for
the Lap No. screen.
The data volume exceeds the wristwatch
memory capacity. Delete the files (page 44).
When using the optional “USB communica-*
tion 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 26), and then perform measurement again.
Is it immediately after press-
ing the LAP button?
Recording laps needs at least 5 seconds of
interval.
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 26).
Any setting cannot be
changed in Option mode
or Setup mode.
Is it during measurement? Settings can be only viewed during the mea-
surement.
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 interfer-
ence 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 26).
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 memory capac-
ity. The data was saved automatically during measure-
ment, and any subsequent data was no longer recorded.
Delete the files for subsequent measurement (page 44).
When using the optional “USB communica-*
tion kit”, delete the files after you send the
saved files to your PC.