Operation Guide 5475
E-40
To change the illumination duration
1. In the Timekeeping Mode, hold down
A
until
ADJ
appears in the lower display.
•
When you release
A
(after
ADJ
appears),
SET
will be fl ashing in the upper
display.
2. Use
C
to cycle through the settings on the lower display until the current
illumination duration (
LT1
or
LT3
) is shown.
•
See the sequence in step 2 of the procedure under “To change the current
time and date settings” (page E-17) for information about how to scroll through
setting screens.
3. Press
D
to toggle the illumination duration between three seconds (
LT3
displayed)
and 1.5 seconds (
LT1
displayed).
4. After all of the settings are the way you want, press
A
to exit the setting screen.
E-41
About auto light
While auto light is enabled, illumination will turn on
whenever you position your wrist as described
below in any mode.
Moving the watch to a position that is parallel
to the ground and then tilting it towards you
more than 40 degrees causes illumination to
turn on.
Warning!
•
Always make sure you are in a safe place whenever you are reading the
display of the watch using auto light. Be especially careful when running or
engaged in any other activity that can result in accident or injury. Also take
care that sudden illumination by auto light does not startle or distract others
around you.
•
When you are wearing the watch, make sure that auto light is disabled before
riding on a bicycle or operating a motorcycle or any other motor vehicle.
Sudden and unintended operation of auto light can create a distraction, which
can result in a traffi c accident and serious personal injury.
More than
40°
Wear the watch on the
outside of your wrist
More than
40°
Wear the watch on the
outside of your wrist
E-42
To enable or disable auto light
In the Timekeeping Mode, hold down
B
for about three
seconds to toggle auto light between enabled (
LT
shown
on the lower display) and disabled (
LT
not displayed).
•
The auto light enabled indicator (
LT
) is on the lower
display in all modes while auto light is enabled.
•
Auto light remains enabled for about six hours. After
that it becomes disabled automatically.
Illumination Precautions
•
Illumination may be hard to see when viewed under
direct sunlight.
•
Illumination turns off automatically whenever an alarm
sounds.
•
Frequent use of illumination runs down the battery.
Auto light enabled
indicator
Auto light enabled
indicator
E-43
Auto light precautions
•
Illumination may not turn on if the face of the watch is more than
15 degrees above or below parallel. Make sure that the back of
your hand is parallel to the ground.
•
Illumination turns off after the preset illumination duration (page
E-40), even if you keep the watch pointed towards your face.
•
Static electricity or magnetic force can interfere with proper
operation of auto light. If illumination does not turn on, try
moving the watch back to the starting position (parallel with the
ground) and then tilt it back towards your face again. If this
does not work, drop your arm all the way down so it hangs at
your side, and then bring it back up again.
•
You may notice a very faint clicking sound coming from the
watch when it is shaken back and forth. This sound is caused
by mechanical operation of auto light, and does not indicate a
problem with the watch.
E-44
Button Operation Tone
When enabled, the button operation tone sounds any time you press one of the
watch’s buttons. You can enable or disable the button operation tone as desired.
•
Even if you disable the button operation tone, the alarm, Hourly Time Signal, and
Countdown Timer Mode alarm all operate normally.
To enable or disable the button operation tone
1. In the Timekeeping Mode, hold down
A
until
ADJ
appears in the lower display.
•
When you release
A
(after
ADJ
appears),
SET
will
be fl ashing in the upper display.
2. Use
C
to cycle through settings on the lower display
until the current button operation tone setting (
MUTE
or
KEY
) is shown.
Mute indicator
Mute indicator
E-45
•
See the sequence in step 2 of the procedure under “To change the current
time and date settings” (page E-17) for information about how to scroll through
setting screens.
3. Press
D
to toggle the button operation tone setting between enabled (
KEY
) and
disabled (
MUTE
).
4. After the setting is the way you want, press
A
to exit the setting screen.
Note
•
The mute indicator is displayed in all modes when the button operation tone is
disabled.
E-46
Low Battery Indication
A low battery indicator appears on the display when the power of the batteries is low.
Have the batteries replaced as soon as possible.
Note
•
For guidelines covering the life of the batteries and supported battery types,
see “Specifi cations” (page E-50).
The conditions below are in effect while the low battery indicator is fl ashing.
•
All hands are stopped.
•
Except for the low battery indicator, all other display
functions are disabled.
•
Watch tones are disabled.
•
Display illumination is disabled.
•
Watch operations are disabled.
Low battery indicator
Low battery indicator
E-47
Note
•
Sequentially or repeatedly performing light, alarm, and other power intensive
operations over a short period can cause a sudden drop in battery power,
which will make the low battery indicator fl ash. Even though the low battery
indicator may disappear and watch functions may become re-enabled, battery
replacement is recommended.
E-48
Troubleshooting
Time Setting
■
The current time setting is off by a couple of hours.
Your Home City setting may be wrong (page E-14). Check your Home City setting and
correct it, if necessary.
■
The current time setting is off by one hour.
You may need to change your Home City’s standard time/daylight saving time (DST)
setting. Use the procedure under “To change the current time and date settings” (page
E-17).
World Time Mode
■
The time for my World Time City is off in the World Time Mode.
This could be due to incorrect switching between standard time and daylight saving
time.
See “To confi gure World Time City and summer time settings” (page E-26) for more
information.
E-49
Batteries
■
The low battery indicator is fl ashing on the digital display.
The watch’s battery power is low. Have the batteries
replaced as soon as possible.
See “Low Battery Indication” (page E-46).
Low battery indicator
Low battery indicator