Casio 5105 Operation Manual

MO0905-EA

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.

Keep the watch exposed to bright light

Bright Light
Solar cell
• 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

General Guide

• Press C to change from mode to mode.
• In any mode (except a setting mode), press B to illuminate the display for about
one second.

Timekeeping

You can adjust the Home Time city data and time in the Timekeeping Mode. You also
can simultaneously display the current time in one other time zone, by specifying a
Dual Time City.
• For information about selecting a Dual Time City, see "To specify the Dual Time
City".
• Pressing D in the Timekeeping Mode will cycle the lower display between the
screens shown below.
Home City Date
Right dial hand
Day of
(World Time)
week
PM indicator
Month – Day Seconds
Read This Before You Set the Time and Date!
This watch is preset with a number of city codes, each of which represents the time
zone where that city is located. When setting the time, it is important that you first
select the correct city code for your Home City (the city where you normally use the
watch). If your location is not included in the preset city codes, select the preset city
code that is in the same time zone as your location.
• Note that all of the times for the World Time City codes and Dual Time City are
displayed in accordance with the time and date settings you configure for the
Timekeeping Mode.
To set the time and date
City code
3. Press C to change the flashing screen content in the sequence shown below to
select the other setting.
City Code
Power Saving
Operation Guide 5105
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,
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 even only partially covered.
Battery discharges in the dark.
Electrical
energy
All
LEVEL 1
functions
enabled LEVEL 2
LEVEL 3
Dis-
charge
LEVEL 4
Timekeeping Mode
Press C.
Home City Time
Dual Time
City code
D D
Hour : Minutes
D
1. In the Timekeeping Mode, hold down A for about five
seconds until the left dial hand points to T1 and the city
code flashes on the upper display. This is the setting
mode.
2. Use D and B to select the city code you want.
• Make sure you select your Home City code before
changing any other setting.
• For full information on city codes, see the "City Code
Table".
12/24-Hour
DST Seconds
Format
Day
Month Year
• 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 about 8 hours exposure to indoor fluorescent lighting
• Be sure to read "Power Supply" 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" for more information.
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.
About This Manual
Some or all
functions
disabled
4. When the timekeeping setting you want to change is flashing, use D or B to
change it as described below.
Screen:
Dual Time
Dual Time
(Hour :
Minutes)
5. Press A twice to exit the setting mode.
• For details about the Daylight Saving Time setting, see "To change the Daylight
Saving Time (summer time) setting". For information about Power Saving, see "To
turn Power Saving on and off".
• The day of the week is displayed automatically in accordance with the date (year,
month, and day) settings.
12-hour and 24-hour timekeeping
• With the 12-hour format, the P (PM) indicator appears to the left of the hour digits for
times in the range of noon to 11:59 p.m. and no indicator appears for times in the
range of midnight to 11:59 a.m.
• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
any indicator.
• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all other modes.
Daylight Saving Time (DST)
Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.
Hour
Minutes
• Depending on the model of your watch, display text
appears either as dark figures on a light background or
light figures on a dark background. All sample displays
in this manual are shown using dark figures 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.
World Time Mode Stopwatch Mode
Alarm Mode Countdown Timer Mode
To do this: Do this:
Change the city code
Toggle between Daylight Saving Time
( ) and Standard Time ( ).
Press D.
Toggle between 12-hour ( ) and
24-hour ( ) timekeeping
Press D.
Reset the seconds to
Use D (+) and B (–).
Change the hour and minutes
Change the year, month, or day
Press D.
Toggle between Power Saving on
( ) and off ( )
Use D (east) and B
(west).
Press D.
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