MO2103-EC
© 2010 CASIO COMPUTER CO., LTD.
• The watch continues to operate, even when it is not exposed to light. Leaving 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-configure 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.
Bright Light
Solar cell
(Converts light to
electrical power.)
LEVEL 1
LEVEL 2
LEVEL 3
Charge
LEVEL 4
Rechargeable battery
E-2
About This Manual
Depending on the model of your watch, display text 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 in the illustration.
Each section of this manual provides you with the information you need to perform
operations in each mode. Further details and technical information can be found in
the "Reference" section.
To ensure that this watch provides you with the years of service for which it is
designed, be sure to carefully read and follow the instructions under "Operating
Precautions" and "User Maintenance."
E-4
Procedure Lookup
The following is a handy reference list of all the operational procedures contained in
this manual.
To set an alarm time ............................................................................................. E-36
To test the alarm ................................................................................................... E-37
E-6
General Guide
Press
to change from mode to mode.
In any mode (except when a setting screen is on the display), press
the display.
E-8
Operation Guide 3220
Battery discharges in the dark.
Electrical
energy
All
LEVEL 1
functions
enabled
LEVEL 2
LEVEL 3
Dis-
charge
LEVEL 4
Timekeeping Mode
Press
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.
• Be sure to keep all user documentation handy for future reference.
Keep the watch exposed to bright light
Bright Light
Solar cell
The actual level at which some functions are disabled depends on the watch model.
Frequent display illumination can run down the battery quickly and require 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 8 hours exposure to indoor fl uorescent lighting
Be sure to read "Power Supply" (page E-49) for important information you
need to know when exposing the watch to bright light.
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.
See "Power Saving Function" (page E-66) for more information.
Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage
Some or all
or loss suffered by you or any third party arising through the use of your watch or
functions
disabled
its malfunction.
Contents
General Guide .......................................................................................................... E-8
Radio-controlled Atomic Timekeeping ................................................................ E-10
World Time ............................................................................................................. E-32
Alarms .................................................................................................................... E-35
Stopwatch .............................................................................................................. E-40
Countdown Timer .................................................................................................. E-42
Illumination ............................................................................................................ E-45
Power Supply ......................................................................................................... E-49
Timekeeping ........................................................................................................... E-57
Reference ............................................................................................................... E-64
Specifi cations ........................................................................................................ E-74
Operating Precautions .......................................................................................... E-77
User Maintenance .................................................................................................. E-87
To turn the Hourly Time Signal on and off .......................................................... E-39
World Time Mode
to illuminate
.
Countdown Timer Mode
The electricity generated by the solar cell of the watch is
stored by a rechargeable 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,
position the face so it is pointed at a source of bright
light.
• You should try to keep the watch outside of your sleeve
as much as possible. Charging is reduced significantly if
the face is covered only partially.
Alarm Mode
Stopwatch Mode
E-1
E-3
E-5
E-7
E-9