Casio 5551 Operation Manual page 5

Operation Guide 5551
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 traffic accident and serious personal injury.
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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-38), 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.
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3. Press C.
Hour hand and
• This enters the hour and minute hand adjustment
minute hand
mode.
4. If the hour and minute hands are not at 12 o'clock, use
D and B to adjust them until they are.
5. Press A to return to the Timekeeping Mode.
Check to make sure that the time indicated by the hour
and minute hands matches the time on the digital
display. If the times don't match, perform the correction
procedure above again.
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Troubleshooting
Time Setting
■ The current time setting is off by hours.
Your Home City setting may be wrong (page E-18). 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 Daylight Saving Time (summer time)
setting" (page E-20) to change the standard time/daylight saving time (DST) setting.
World Time
■ The time for my World Time City is off.
This could be due to incorrect switching between standard time and daylight saving
time. See "To specify standard time or daylight saving time (DST) for a city" (page E-27)
for more information.
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Specifications
Accuracy at normal temperature: ±15 seconds a month
Digital Timekeeping: Hour, minutes, seconds, p.m. (P), month, day, day of the week
Time format: 12-hour and 24-hour
Calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Other: Home City code (can be assigned one of 48 city codes);
Standard Time/Daylight Saving Time (summer time)
Analog Timekeeping: Hour, minutes (hand moves every 20 seconds)
World Time: 48 cities (31 time zones)
Other: Daylight Saving Time/Standard Time
Home City/World Time City swapping
Stopwatch:
Measuring unit: 1/100 second
Measuring capacity: 59'59.99"
Measuring modes: Elapsed time, split time, two finishes
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To enable or disable auto light
In the Timekeeping Mode, hold down B for about three
Auto light enabled indicator
seconds to toggle auto light between enabled (indicator
displayed) and disabled (indicator not displayed).
• The auto light enabled indicator appears 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 batteries.
Adjusting Hand Positions
Strong magnetism or impact can cause the hands setting to be off. If this happens,
you should adjust the hand positions.
To adjust hand positions
1. In the Timekeeping Mode, hold down A for about five
World Time hands
seconds until H.SET appears.
• This indicates the World Time hands adjustment
mode.
Though ADJ will appear as you hold down A, do
•
not release the button yet.
2. If the World Time hands are not at 12 o'clock, use D
and B to adjust them until they are.
Button Operation Tone
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.
To turn the button operation tone on and off
1. In the Timekeeping Mode, hold down A until ADJ
Mute indicator
appears.
• This indicates the city code setting mode.
2. Press C nine times to display the button operation
tone On/Off setting screen (page E-22).
The screen will show either KEY or MUTE.
3. Press D to toggle the setting between KEY (ON) and
MUTE (OFF).
4. After all the settings are the way you want, press A to
exit the setting mode.
Main Indicators
z x
Number
z z
x x
c c
c
v v
v
b b
n n
m m
m n b
Countdown Timer:
Measuring unit: 1 second
Countdown range: 60 minutes
Countdown start time setting range: 1 to 60 minutes (1-minute increments)
Alarms: 5 daily alarms; Hourly time signal
Illumination: LED (light-emitting diode); Selectable illumination duration
(approximately 1.5 seconds or 3 seconds); Auto light
Other: Button operation tone on/off; Moving the Hands to View the Digital Display
Battery: Two silver oxide batteries (Type: SR726W)
Approximate battery operating time: 2 years under the following conditions:
• 1 illumination operation (1.5 seconds) per day
• Alarm: 10 seconds/day
Frequent use of illumination runs down the batteries.
Specifications are subject to change without notice.
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Name See
Mute indicator E-45
Auto light enabled indicator E-41
Hands shifted indicator E-14
Alarm on indicator E-37
Hourly time signal on indicator E-37
DST indicator E-20, E-27
PM indicator E-16
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