Casio 2763 Operation Manual

MA0310-EA
Modes and Display Screens
C C C button sounds a confirmation tone and cycles through available modes in the sequence shown below.
Each press of the C C
• The watch will automatically revert to the Timekeeping Mode if you leave it in the Alarm Mode (excetp for the Target Alarm screen),
Recall Mode, or Hand Setting Mode without performing any operation for about two or three minutes.
Timekeeping Mode
Hour Hand Stopwatch 1/20-second
(Switches
Hand
display screen)
button button
Minute Hand
Battery Level
Indicator
button button
(Changes mode)
(Illuminates display)
Second Hand 24-hour hand
Switching Between Screens
Each press of the button cycles through available modes in
the sequence shown below.
Month Day
Day of the Week Receive Icon
PM Indicator
(no indicator for AM)
Hour Seconds Year Day
Minutes Month

Power Supply

The power supply of this watch uses a solar cell to generate
electrical power, which is stored by a rechargeable battery. Using
or storing the watch where it is not regularly exposed to light, or
allowing it to be blocked from light by your sleeve as you are
wearing it can cause the power of the rechargeable battery to run
down. To ensure stable operation, be sure to allow the watch to be
exposed to light as much as possible when you are wearing or
storing it.
Note that all data in memory and all settings are cleared
whenever you allow the level of the rechargeable battery
to drop to Level 4.

❚ Battery Indicator

Level 1 All functions enabled.
All functions enabled.
Level 2
Display, display illumination, alarms,
Level 3
hourly time signal, signal reception,
and analog timekeeping disabled.
All functions, including digital
Level 4
timekeeping, disabled.
Operation Guide 2763
• The analog hands are not shown in the face illustrations shown in this User's Guide.
Days of the Week
S U : Sunday MO : Monday TU : Tuesday
WE : Wednesday T H : Thursday FR : Friday
S A : Saturday
• For information about the battery indicator, see "Battery
Indicator". For information about the receive icon, see
"Receive Icon".
Hand Setting Mode
Mode Name
• In the Stopwatch Mode, the battery indicator operates as the
stopwatch minute hand.
• Exposing the watch to direct sunlight or other strong light may
cause the battery level indicator to momentarily indicate a level
that is higher than the actual battery level. Because of this, you
should wait for a short while after charging to check the battery
level indicator.
• Signal reception will become enabled again when the battery is
recharged up to Level 2.
• Even after the battery drops to Level 4, watch operation will
resume as soon as charging starts. However, you should wait until
the battery reaches Level 2 before setting the time and date.
❚ Start charging at Level 3!
Battery Level 3 indicates that remaining battery power is very low.
Be sure to expose the watch to light for recharging as soon as
possible after the battery level indicator shows Level 3.
❚ Flashing Recovering Indicator
If you use the light or alarms a number of times during a short
period, a Recovering indicator flashes on the display and the
following operations become disabled as battery power recovers.
Recovering Indicator
• Display illumination
• Alarm and hourly time signal
• Time calibration signal reception
• Analog timekeeping
Normal operation will return after the
battery recovers.
Stopwatch Mode
Moves to 12 o'clock
position and stops.
Measured Value
Alarm Mode
Alarm Number
Alarm Time

❚ Charging Precautions

Avoid charging the watch in the following locations, and anywhere
else the watch may become very hot.
• On the dashboard of an automobile parked in the sun
• Very close to an incandescent light source or other sources of
heat
• In a location exposed to direct sunlight for long periods
Note that the display panel may become black under very high
temperatures. This is temporary, and the display will appear
normal again at lower temperatures.
Depending on the light source you are using, the
case of the watch may become quite hot during
charging. Take care to guard against burn injury
after charging.

❚ Charging the Battery

Point the solar panel (face) of the watch at a light source.
• Remember that even a partial blockage of the solar cell reduces
charging efficiency.
Example: Positioning the watch
Solar Cell
• The illustration shows the resin band model.
Recall Mode
Current battery level
Current time seconds count
Dual Time Mode
Time Zone
TIME
DIFFERENCE
Time in selected
time zone
❚ Charging Guide
Required Daily Charging Time
• The following is the daily
Starting from a full charge, the watch
amount of charging required
should be able to continue operating
each day to support the
for about five months without further
operations under "Daily Use".
charging under the conditions
Environment
described below. Charging
(Luminosity)
Daily Use (All time values are
Outdoor sunlight
approximate.)
(50,000 lux)
• Display Illumination: 1.5
Indoor sunlight
seconds
(10,000 lux)
• Alarms: 10 seconds
• Signal reception: 5 times
Outdoor overcast
• Digital and analog
(5,000 lux)
timekeeping
Fluorescent indoor
lighting (500 lux)
Making sure the watch is regularly
exposed to light ensures stable
operation.
• Charge Times Required to Advance to a Higher Level
Charging Time
Environment
(Luminosity)
\ \ \
Level 4 Level 3 Level 2 Level 1
Outdoor sunlight
1 hr. 14hr.
(50,000 lux)
Indoor sunlight
3 hr. 71hr.
(10,000 lux)
Outdoor overcast
5 hr. – – –
(5,000 lux)
Fluorescent indoor
49hr. – – –
lighting (500 lux)
• Note that the above charging times are for reference only. Actual
charging time depends on a variety of environmental factors.
Time
5min.
24min.
48min.
8hr.
4hr.
20hr.
– – –
– – –
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