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Casio 5259 - GA-300 Manual

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Operation Guide 5259
E-30
To specify the illumination duration
1. In the Timekeeping Mode, hold down A for about two
seconds until “SET” appears on the display.
• Note that keeping A depressed too long (for about
five seconds) will cause a different type of setting
mode to be entered (page E-33).
2. Press C ten times to display the current illumination
duration
or .
3. Press D to toggle the setting between
(1.5 seconds)
and
(three seconds).
4. Press A to exit the setting screen.
LIGHT
E-31
About the Auto Light Switch
Turning on the auto light switch causes illumination to 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.
• Wear the watch on the outside of your wrist.
Parallel to
ground
More than
40°
E-32
Warning!
••
••
• Always make sure you are in a safe place whenever you are reading the
display of the watch using the auto light switch. 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 the auto light switch does not
startle or distract others around you.
••
••
• When you are wearing the watch, make sure that its auto light switch is turned
off before riding a bicycle or operating a motorcycle or any other motor
vehicle. Sudden and unintended operation of the auto light switch can create a
distraction, which can result in a traffic accident and serious personal injury.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down B for about three seconds to toggle the auto
light switch on (auto light switch indicator displayed) and off (auto light switch indicator
not displayed).
• The auto light switch indicator remains in all modes while the auto light switch is
turned on.
• In order to protect against running down the battery, the auto light switch will turn off
automatically approximately six hours after you turn it on. Repeat the above
procedure to turn the auto light switch back on if you want.
E-33
Hand Home Position Correction
The indicator disk and hour and minute hands of the watch can be thrown off by
exposure to strong magnetism or impact. If this happens, you can correct analog
readings as required.
To adjust home positions
1. In the Timekeeping Mode, hold down A for about five
seconds until H-SET (
) appears in the upper display
and Sub (
) appears in the lower display.
2. Check the position of the indicator disk.
• The indicator disk is in the correct home position if it is
indicating 60 (12 o’clock position). If it is not correct,
use the D (+) and B (–) buttons to adjust it.
• After confirming that the indicator disk is in its correct
home position, press C.
Correct indicator disk
position
E-34
3. Check the positions of the hour and minute hands.
• The hands are in the correct home positions if they
are pointed at 12 o’clock. If they aren’t, use D
(clockwise) and B (counterclockwise) to adjust their
positions.
4. When everything is the way you want, press A to
return to regular timekeeping.
• This will cause the hour and minute hands to move to
the current Timekeeping Mode time and the indicator
disk to move to the 0 position.
• Pressing C here will return to the setting at the
beginning of step 2.
Correct hour and minute
hand positions
E-35
Reference
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
Button Operation Tone
The button operation tone sounds any time you press one
of the watch’s buttons. You can turn the button operation
tone on or off as desired.
• Even if you turn off the button operation tone, alarms,
the Hourly Time Signal, and other beepers all operate
normally.
Mute indicator
E-36
To turn the button operation tone on and off
1. In the Timekeeping Mode, hold down A for about two seconds until “SET” appears
on the display.
• Note that keeping A depressed too long (for about five seconds) will cause a
different type of setting mode to be entered (page E-33).
2. Press C nine times until the current button operation tone setting (
or MUTE)
appears.
3. Press D to toggle the setting between (tone on) and MUTE (tone off).
4. Press A to exit the setting screen.
• The mute indicator is displayed in all modes when the button operation tone is
turned off.
Auto Return Features
• If you leave the watch with a flashing setting on the display for two or three minutes
without performing any operation, the watch will exit the setting mode automatically.
• The watch will return to the Timekeeping Mode automatically if you do not perform
any operation for two or three minutes in the Alarm Mode.
E-37
High-Speed Movement
• The D and B buttons are used to change setting in various setting modes. In most
cases, holding down these buttons will start high-speed movement.
Initial Screens
When you enter the Stopwatch Mode, World Time Mode or Alarm Mode, the data you
were viewing when you last exited the mode will appear first.
Timekeeping
• Resetting the seconds to while the current count is in the range of 30 to 59
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to
without changing the minutes.
• The year can be set in the range of 2000 to 2099.
• The watch’s built-in full automatic calendar makes allowances for different month
lengths and leap years. Once you set the date, there should be no reason to change
it except when battery has replaced.
• The current time for all city codes in the Timekeeping Mode and World Time Mode is
calculated in accordance with the Coordinated Universal Time (UTC) for each city,
based on your Home City time setting.
E-38
Illumination Precautions
• Illumination may be difficult to see when viewed under direct sunlight.
• Illumination turns off automatically whenever an alarm sounds.
• Illumination turns off automatically depends on the current illumination duration
setting.
• Frequent use of illumination runs down the battery.
Auto light switch precautions
• Avoid wearing the watch on the inside of your wrist. Doing so causes the auto light
switch to operate when it is not needed, which shortens battery life. If you want to
wear the watch on the inside of your wrist, turn off the auto light switch feature.
• 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 in about 1.5 seconds or 3 seconds,
even if you keep the watch pointed towards your face.
More than 15 degrees
too high
E-39
• Static electricity or magnetic force can interfere with proper operation of the auto
light switch. If illumination does not turn on, try moving the watch back to the starting
position (parallel with the ground) and then tilt it back toward you 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.
• Under certain conditions, illumination may not turn on until about one second after
you turn the face of the watch towards you. This does not necessarily indicate
malfunction of the auto light switch.
• 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 the auto light
switch, and does not indicate a problem with the watch.
4


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