Operation Guide 5173
E-9
E-75
To specify the Dual Time City
E-76 Correction of Hand Home Positions
E-77
To trigger auto correction of hand home positions
E-78
To adjust the home positions manually
E-80 Reference
E-82
To recover from the sleep state
E-82
To turn Power Saving on and off
E-90 Specifications
E-8
E-41 Countdown
Timer
E-42
To use the countdown timer
E-43
To confi gure countdown start time and auto-repeat settings
E-45 Alarms
E-46
To set an alarm time
E-49
To turn an alarm on and off
E-50
To turn the Hourly Time Signal on and off
E-51 Illumination
E-51
To illuminate the display manually
E-54
To turn the auto light switch on and off
E-55 Power
Supply
E-64 Timekeeping
E-67
To set the time and date manually
E-73
To change the Daylight Saving Time (summer time) setting
E-7
Contents
E-1 Getting
Acquainted
E-10 General
Guide
E-12 Radio Controlled Atomic Timekeeping
E-14
To specify your Home City
E-28
To perform manual receive
E-31
To check the latest signal reception results
E-34 World
Time
E-36
To view the current time in another time zone
E-37
To toggle a city code time between Standard Time and Daylight
Saving Time
E-38
To swap your Home City and World Time City
E-39 Stopwatch
E-40
To measure times with the stopwatch
E-6
About This Manual
Depending on the model of your watch, display text
x
appears either as dark fi gures on a light background or
light fi gures on a dark background. All sample displays
in this manual are shown using dark fi gures on a light
background.
Button operations are indicated using the letters shown
x
in the illustration.
Each section of this manual provides you with the
x
information you need to perform operations in each
mode. Further details and technical information can be
found in the “Reference” section.
E-5
If the display of the watch is blank...
If the display of the watch is blank, it means that the watch’s Power Saving function
has turned off the display to conserve power.
x
See “Power Saving Function” (page E-80) for more information.
E-4
Battery discharges in the dark.
LEVEL 1
LEVEL 2
LEVEL 3
LEVEL 4
Some or all
functions
disabled
Discharge
The actual level at which some functions are disabled depends on the watch model.
x
Frequent display illumination can run down the battery quickly and require
x
charging. The following guidelines give an idea of the charging time required to
recover from a single illumination operation.
Approximately 5 minutes exposure to bright sunlight coming in through a window
−
Approximately about 8 hours exposure to indoor fl uorescent lighting
−
x
Be sure to read “Power Supply” (page E-55) for important information you
need to know when exposing the watch to bright light.
E-3
The watch continues to operate, even when it is not exposed to light. Leaving
x
the watch in the dark can cause the battery to run down, which will result in
some watch functions to be disabled. If the battery goes dead, you will have to
re-confi gure watch settings after recharging. To ensure normal watch operation, be
sure to keep it exposed to light as much as possible.
Battery charges in the light.
Rechargeable battery
Solar cell
(Converts light to
electrical power.)
Electrical
energy
LEVEL 1
Bright Light
LEVEL 2
LEVEL 3
LEVEL 4
All functions
enabled
Charge
E-2
Keep the watch exposed to bright light
The electricity generated by the solar cell of the watch is
stored by a built-in battery. Leaving or using the watch
where it is not exposed to light causes the battery to run
down. Make sure the watch is exposed to light as much
as possible.
When you are not wearing the watch on your wrist,
x
position the face so it is pointed at a source of bright
light.
You should try to keep the watch outside of your sleeve
x
as much as possible. Charging is reduced signifi cantly
if the face is even only partially covered.
Bright Light
Solar cell
E-1
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to read this manual carefully.
Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any
damage or loss suffered by you or any third party arising through the use of this
product or its malfunction.
MA2112-ED
