Charging The Watch - Casio 3261 Operation Manual

Operation Guide 3261 3281
E-80 Using the Alarm
E-80 To enter the Alarm Mode
E-81 To set an alarm time
E-82 To test the alarm
E-82 To turn an alarm and the Hourly Time Signal on and off
E-83 To stop the alarm
E-84 Illumination
E-84 To turn on illumination manually
E-85 To change the illumination duration
E-88 To turn the auto light switch on and off
E-91 Graphic Area
E-92 Button Operation Tone
E-93 To turn the button operation tone on and off
E-10

Charging the Watch

The face of the watch is a solar cell that generates power from light. The generated
power charges a built-in rechargeable battery, which powers watch operations. The
watch charges whenever it is exposed to light.
Charging Guide
Whenever you are not
wearing the watch, leave it in
a location where it is exposed
to light.
• Best charging performance
is achieved by exposing the
watch to the strongest light
available.
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Power Levels
You can get an idea of the watch's power level by observing the battery power
indicator on the display.
Battery Power
Level
Indicator
1
(H)
2
(M)
Battery power Battery power
3
indicator indicator
(L)
4
(C)
5
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Power Recovery Mode
• Performing multiple sensor, illumination, or beeper operations during a short period
may cause all of the battery power indicators (H, M, and L) to start flashing on the
display. This indicates that the watch is in the power recovery mode. Illumination,
alarm, countdown timer alarm, hourly time signal, and sensor operations will be
disabled until battery power recovers.
• Battery power will recover in about 15 minutes. At this time, the battery power
indicators (H, M, L) will stop flashing. This indicates that the functions listed above
are enabled again.
• If all of the battery power indicators (H, M, L) are flashing and the CHG (charge)
indicator also is flashing, it means the battery level is very low. Expose the watch to
bright light as soon as possible.
• Even if battery power is at Level 1 (H) or Level 2 (M), the Digital Compass/
Thermometer Mode sensor may be disabled if there is not enough voltage available
to power it sufficiently. This is indicated when all of the battery power indicators (H,
M, L) are flashing.
• Frequent flashing of all of the battery power indicators (H, M, L) probably means
that remaining battery power is low. Leave the watch in bright light to allow it to
charge.
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• The above exposure times all are for reference only. Actual exposure times depend
on lighting conditions.
• For details about the operating time and daily operating conditions, see the "Power
Supply" section of the Specifications (page E-101).
Power Saving
When turned on, Power Saving enters a sleep state automatically whenever the watch
is left for a certain period in an area where it is dark. The table below shows how
watch functions are affected by Power Saving.
• There actually are two sleep state levels: "display sleep" and "function sleep".
Elapsed Time in Dark Display
60 to 70 minutes
Blank, with PS flashing
(display sleep)
6 or 7 days
Blank, with PS not flashing
(function sleep)
E-18
When wearing the watch,
make sure that its face is not
blocked from light by the
sleeve of your clothing.
• The watch may enter a
sleep state (page E-18) if its
face is blocked by your
sleeve even only partially.
Function Status
All functions enabled.
All functions enabled.
Illumination, beeper, and sensor
operation disabled.
Except for the CHG (charge)
indicator, all functions and display
indicators disabled.
All functions disabled.
Operation
Display is off, but all functions are
enabled.
All functions are disabled, but
timekeeping is maintained.
E-94 Troubleshooting
E-99 Specifications
Warning!
Leaving the watch in bright light for charging can cause it to become quite hot.
Take care when handling the watch to avoid burn injury. The watch can become
particularly hot when exposed to the following conditions for long periods.
• On the dashboard of a car parked in direct sunlight
• Too close to an incandescent lamp
• Under direct sunlight
Important!
• Allowing the watch to become very hot can cause its liquid crystal display to black
out. The appearance of the LCD should become normal again when the watch
returns to a lower temperature.
• Turn on the watch's Power Saving function (page E-18) and keep it in an area
normally exposed to bright light when storing it for long periods. This helps to
ensure that power does not run down.
• Storing the watch for long periods in an area where there is no light or wearing it in
such a way that it is blocked from exposure to light can cause power to run down.
Expose the watch to bright light whenever possible.
• The flashing LOW indicator at Level 3 (L) tells you that battery power is very low,
and that exposure to bright light for charging is required as soon as possible.
• At Level 4 or Level 5, all functions are disabled and settings return to their initial
factory defaults. Once the battery reaches Level 2 (M) after falling to Level 4 or
Level 5, reconfigure the current time, date, and other settings.
• If charging starts from Level 5, CHG will start flashing on the display when Level 4
is reached. Note, however, that watch functions are not restored at this time. Leave
the watch exposed to sufficiently strong light until the battery level reaches Level 2
or Level 1 before using it.
• Leaving the watch exposed to direct sunlight or some other very strong light source
can cause the battery power indicator to show a reading temporarily that is higher
than the actual battery level. The correct battery level should be indicated after a
few minutes.
• All data stored in memory is deleted, and the current time and all other settings
return to their initial factory defaults whenever battery power drops to Level 4 or
Level 5, and when you have the battery replaced.
Charging Times
Daily
Exposure Level
Operation Level 5
(Brightness)
*1
Outdoor sunlight
5 min.
(50,000 lux)
Sunlight through a window
24 min.
(10,000 lux)
Daylight through a window
48 min.
on a cloudy day (5,000 lux)
Indoor fluorescent lighting
8 hours
(500 lux)
*1 Approximate amount of exposure time required each day to generate enough
power for normal daily operation.
*2 Approximate amount of exposure time (in hours) required to take power from one
level to the next.
• The watch will not enter a sleep state between 6:00 AM and 9:59 PM. If the watch is
already in a sleep state when 6:00 AM arrives, however, it will remain in the sleep
state.
• The watch will not enter a sleep state while it is in the Stopwatch Mode or
Countdown Timer Mode.
To recover from the sleep state
Move the watch to a well-lit area, press any button, or angle the watch towards your
face for reading (page E-86).
E-11
E-13
E-15
Level Change *2
Level 4 Level 3 Level 2 Level 1
2 hours 16 hours 5 hours
6 hours 79 hours 21 hours
12 hours 159 hours 43 hours
168 hours – – – – – –
E-17
E-19