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Operation Guide 2891
4
❚
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.
Illumination Precautions
• The light may be difficult to see under bright sunlight.
• Illumination turns off automatically if an alarm sounds, etc.
• 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.
• Illumination is disabled during time calibration signal
reception, while configuring sensor measurement mode
settings, and during direction sensor calibration
(“Calibrating the Direction Sensor”).
Full Auto Light Switch Precautions
• Frequent use of the full auto light switch can run down the battery.
• 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.
• The full auto light switch is disabled during the 20 seconds
required to take a direction reading with the digital compass.
With the watch on your
wrist, position it parallel
with the ground.
Rotate your arm so the watch
is angled at about 40 degrees,
so you can read its face.
11
11
1
22
22
2
An EL (electro luminescent) panel is used for illumination for easy
reading in the dark. A full auto light switch turns on illumination
automatically when you angle the watch towards your face for
reading.
❚
To turn on illumination manually
In any mode, press the
LL
LL
L
button.
• You can specify 1.5 seconds or
2.5 seconds as the duration of
display illumination (“To specify
the illumination duration”).
• Pressing the L 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.
❚
To turn the full auto light switch on or off
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.
In any mode (except when a setting screen is on the display), hold
down the L button for about three seconds to toggle the full auto
light switch on ( indicator displayed) and off (no indicator
displayed).
(3 seconds)
Full Auto Light
Switch On Indicator
Illumination
To specify the illumination duration
1. In the Timekeeping Mode,
hold down the
EE
EE
E button
for about two seconds
until the city code and
GMT differential start to
flash. This is the setting
screen.
2. Press the
DD
DD
D button three
times so the seconds are
flashing.
3. Press the
AA
AA
A button to
toggle the display
illumination between 1.5
seconds and 2.5 seconds.
• : 1.5 seconds
: 2.5 seconds
4. When the setting is the
way you want, press the
EE
EE
E 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
(2 seconds)
(3 times)
1.5 Seconds
2.5 Seconds
At least 40
degrees