Casio 5274 User Manual
MA1203-EA
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Operation Guide 5274
ENGLISH
Your watch may differ somewhat from the one shown in the illustration. x
E-1
Before Using the Watch for the First Time
Depending on your watch model, there may be a spacer x
installed at the factory around the crown. If your watch has
a spacer, you should remove the spacer before using the
watch.
After removing the spacer, use the procedures in “Crown
x
Operations” (page E-3) and “To adjust the time setting” (page
E-12) to set up the watch for use.
E-2
Contents
E-2 Before Using the Watch for the First Time
E-5 Solar Charging
E-11 Indicators and Crown Operation
E-12 Setting the Current Time and Day
E-12 To adjust the time setting
E-13 To change the day indicator setting
E-14 Using the Stopwatch
E-18 Abnormal Hand Movement or Function
E-20 Specifi cations
E-4
Caution!
The case of the watch may become quite hot when charging. Guard against burn x
injury after charging.
Avoid charging in the following locations, and anywhere else where the watch may x
become very hot.
On the dashboard of an automobile parked in the sun
−
Close to an incandescent light source or other sources of heat −
Locations exposed to direct sunlight for long periods −
Low Charge and Dead Battery Conditions
An alert operation is performed when the battery charge goes low.
Crown
Spacer
Crown Operations
Some water-resistant models (100 meters, 200 meters)
have a screw-in crown. When you need to perform a crown
operation, rotate it towards you to unscrew it. Then pull
the crown out. Avoid applying undue force when pulling.
The watch loses its water resistance while the crown is
unscrewed. After performing a crown operation, fully screw
the crown back in.
If your watch has a rotary bezel...
You can rotate the bezel to align its ▼ mark with
the minute hand. Then you will be able to tell how
much time has elapsed since aligning the ▼ mark.
Current
Crown
Loosen
Start
Elapsed time
Solar Charging
A solar panel generates electrical power that charges a built-in (secondary) battery.
The entire face is a solar panel, so power is generated when the face is exposed to
light. Keep the watch exposed to light as much as possible.
Charging the Battery
Low Battery Alert
The second hand will jump at two-second intervals to alert you when the charge is
low.
When you are not wearing the watch, leave it where it is exposed
to light. For stable operation, expose the watch to at least a half
day of light per month.
When wearing the watch, try to keep your clothing from blocking
its face (solar panel). Charging effi ciency is reduced signifi cantly
even if the face is blocked only partially.
Regular Timekeeping Low Battery Alert
Low charge
Charged
2-second jump
E-3
E-5
E-6
Charging Time
The times below are general guidelines for reference only.
Charging Time to Support Daily Use
Exposure Level (Brightness) Approximate Charging Time
Outdoor sunlight (50,000 lux) 8 minutes
Sunlight through a window (10,000 lux) 30 minutes
Daylight through a window on an overcast day
(5,000 lux)
Indoor fl uorescent lighting (500 lux) 8 hours
E-8
48 minutes
Charging Time to Recover from Dead Battery
Exposure Level
(Brightness)
Outdoor sunlight (50,000 lux) 3 hours 24 hours
Sunlight through a window
(10,000 lux)
Daylight through a window on
an overcast day (5,000 lux)
Indoor fl uorescent lighting
(500 lux)
Important!
The watch will continue to run for about six months after a full charge, even if it is
not exposed to light. For stable operation, however, expose it to light as much as
possible.
Approximate Charging
Time to 1-second Hand
Movement
11 hours 94 hours
18 hours 144 hours
175 hours – – –
Approximate Time to
Full Charge
E-7
E-9
Operation Guide 5274
Note
Actual charging time depends on environmental conditions.
Over-charge Protection
Charging stops automatically when a full charge is attained. This protects against
over-charging.
E-10
Setting the Current Time and Day
To adjust the time setting
When the second hand is at 12 o’clock, pull the 1. Crown out to Click 2.
Rotate the 2. Crown to change the time setting.
Push the 3. Crown back in.
Note
Take care that you set the correct AM or PM time. x
When changing the time, move the minute hand four or fi ve minutes past your fi nal x
setting, and then back it up to the setting you want.
E-12
Using the Stopwatch
The stopwatch measures elapsed time in 1/5-second increments up to 59 minutes,
59.8 seconds.
Elapsed time
A
Start Stop Re-start Stop Reset
Split time
A
Start Split Split release Stop Reset
A A A B
B B A B
Indicators and Crown Operation
24-hour Hand
Minute Hand
Hour Hand
Second Hand
Stopwatch 1/5-second Hand
Stopwatch Minute Hand
Stopwatch functions
24-hour Hand
The 24-hour hand indicates the current hour of the day, making one complete
rotation every 24 hours.
To change the day indicator setting
Pull the 1. Crown out to Click 1.
Rotate the 2. Crown away from you to set the day.
Crown back in.
Push the 3.
Note
The day indicator setting uses a 31-day month. Make adjustments for months of x
shorter lengths.
Avoid changing the day indicator setting between the hours of 9 p.m. and 1 a.m. x
Otherwise, the day indicator may not change correctly at midnight.
Two fi nishes
A
Start Split
Important!
Do not operate the stopwatch with the crown pulled out.
B A B B
First runner
fi nishes.
Display time of
fi rst runner.
Stop
Second runner
fi nishes.
Click 1
Crown
Day Indicator
Split release
Display time of
second runner.
Click 2
Reset
E-11
E-13
E-14
Note
The x Stopwatch 1/5-second Hand and Stopwatch Minute Hand move for only the fi rst
60 minutes of an elapsed time operation. After that, they stop at the 12 o’clock
position.
The stopwatch will not operate while the second hand is jumping at two-second
x
intervals, which indicates that the watch’s charge is low.
If a low charge state (indicated by the second hand jumping at two-second x
intervals) is entered while a stopwatch operation is in progress, the stopwatch will
reset automatically to zero.
Correcting the 0 Positions of the Stopwatch Hands
Perform the following procedure if the stopwatch hands do not return to their 0 (zero)
positions when you reset the stopwatch.
Crown out to Click 2.
Pull the 1.
Hold down 2. A for about three seconds, the
to indicate the minute hand setting mode.
E-16
Stopwatch Minute Hand will rotate
Abnormal Hand Movement or Function
Should the watch ever exhibit abnormal hand movement or function, or if the second
hand does not move normally (one-second increments) even after the watch is fully
charged, perform the procedure below to perform a system reset.
Pull the 1.
Crown out to Click 2.
Hold down both 2. A and B for about three seconds.
Push the 3. Crown back in.
The second hand will start to move.
x
If the second hand is jumping at two-second intervals, expose the watch to light x
to charge it (page E-5).
Stopwatch 1/5-second Hand and Stopwatch Minute Hand do not return
If the 4.
to their 0 (zero) positions when you reset the stopwatch, correct their
0 positions (page E-16).
E-18
If the hand does not align with 12 o’clock, use the x B button to adjust it.
Holding down x B moves the current hand at high speed.
Hold down 3. A for about three seconds, the
rotate to indicate the second hand setting mode.
If the hand does not align with 12 o’clock, use the
x B button to adjust it.
Holding down x B moves the current hand at high speed.
After all of the hands are the way you want, push the 4.
Important!
Pulling out the crown to click 2 to perform the above procedure causes current
timekeeping to stop. Because of this, the current time setting will be different when
you push the crown back in. After performing the above procedure, be sure to
correct the current time setting.
Reference
To adjust the time setting (page E-12) x
To change the day indicator setting (page E-13) x
Stopwatch 1/5-second Hand will
Crown back in.
E-15
E-17
E-19
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