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Operation Guide 2931
3
❚
Positioning Your Arm Correctly
• You should be wearing the watch on the outside of your wrist
when using the full auto light switch.
• Make sure that the left (9 o’clock)
and right (3 o’clock) sides of the
watch are within ±15 degrees of
being parallel with the ground.
The full auto light switch may not
operate properly if the angle is
greater than 15 degrees.
Important!
• Illumination may be difficult to see under bright sunlight.
• Illumination turns off automatically if you press any button
causing a confirmation tone to sound or if an alert operation
is performed.
• Illumination will not turn on while manual receive is in
progress.
• You may notice a slight sound from the watch while
illumination is turned on. This is the sound of EL panel
vibration and does not indicate malfunction.
Full Auto Light Precautions
• Frequent use of the full auto light switch can run down the battery.
• The full auto light switch is disabled while you are viewing tide
data.
• The full auto light switch may turn on illumination when the face of
the watch is shaded by your sleeve.
• Illumination may not turn on immediately when you angle the
watch towards your face. This does not indicate malfunction.
• Illumination remains on for the specified duration (1.5 seconds or
2.5 seconds) only, even if you leave the watch angled towards
your face.
• The full auto light switch is disabled automatically whenever the
battery indicator reaches Level 4.
• Illumination may turn on unintentionally when you wear the watch
on the inside of your wrist, when you shake your arm, or when
you raise your arm. Be sure to turn off the full auto light switch
whenever you do not need illumination.
• Keep the full auto light switch turned off whenever you are
wearing the watch on the inside of your wrist.
• Electro-static charge and magnetism can interfere with full auto
light switch operation and even make operation impossible. If this
happens, lower your arm to the starting position and then raise it
again. If you still have trouble with illumination, try lowering your
arm down to your side and then raise it to your face for reading.
Rotate your arm so the watch
is angled at about 40 degrees,
so you can read its face.
With the watch on your
wrist, position it parallel
with the ground.
11
11
1
22
22
2
At least 40
degrees
An EL (electro luminescent) panel is used to illuminate the display
of the watch for easy reading in the dark. The full auto light switch
automatically turns on illumination whenever you angle the watch
towards your face for viewing, while it is dark.
❚
To turn on illuminination manually
In any mode, press the
BB
BB
B
button.
• This turns on illumination.
• You can specify 1.5 seconds or
2.5 seconds as the illumination
duration (“To specify the
illumination duration”).
• Pressing the B button turns on illumination regardless of whether
the full auto light switch is on or off.
You may hear a faint rattling sound when you move the watch
around. This sound is caused by the movement of a metal
bulb that controls operation of the full auto light switch, and
does not indicate malfunction.
Using the Full Auto Light Switch
The full auto light switch turns on illumination automatically
whenever you angle the watch towards your face for reading,
but only when it is dark.
• The full auto light switch does not turn on illumination when
surrounding light is bright.
The full auto light switch turns on illumination for the specified
illumination duration in all modes when the watch is angled
towards the face.
❚
To turn the full auto light switch on or off
In any mode (except when a settings screen is on the display),
hold down the B button for about three seconds to toggle the
auto light switch on (AUTO EL indicator displayed) and off (no
indicator displayed).
Full Auto Light
On Indicator
To specify the illumination duration
1. In the Timekeeping Mode,
hold down the
AA
AA
A button
for about two seconds
until the city code and
GMT differential start to
flash. This is the setting
screen.
2. Press the
AA
AA
A button twice
to display the time setting
screen.
• This displays the DST setting.
3. Press the
CC
CC
C button twice
so the seconds are
flashing.
4. Press the
BB
BB
B button to
select the illumination
duration you want.
• Each press of the B button
toggles the illumination
duration between 1.5 seconds
and 2.5 seconds. An indicator
on the display shows which
setting is currently selected.
• : 1.5 seconds
: 2.5 seconds
5. When the setting is the way you want, press the
AA
AA
A
button to exit the setting screen.
• The display also will exit the setting screen automatically if
you do not perform any operation for about two or three
minutes.
City Code
GMT Differential
Seconds
(Twice)
Illumination
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