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Operation Guide 5200
Countdown Timer
You can set the countdown timer within a range of one to
100 minutes. An alarm sounds when the cowntdown
reaches zero.
• All of the operations in this section are performed in the
Countdown Timer Mode, which you enter by pressing
B (page E-9).
Countdown End Beeper
The countdown end beeper lets you know when the
Minutes
countdown reaches zero. The beeper stops after about 10
Seconds
seconds or when you press any button.
E-30
To use the countdown timer
Press C while in the Countdown Timer Mode to start the
countdown timer.
• The countdown timer operation continues even if you
exit the Countdown Timer Mode.
• Press C while a countdown operation is in progress to
pause it. Press C again to resume the countdown.
• To stop a countdown operation completely, hold down
Current timer time
C for about one second until the countdown time
returns to its starting value.
E-32
Important!
• 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 rechargeable battery
power to run down. Be sure that the watch is exposed to bright light whenever
possible.
• This watch uses a rechargeable battery to store power produced by the solar cell, so
regular battery replacement is not required. However, after very long use, the
rechargeable battery may lose its ability to achieve a full charge. If you experience
problems getting the rechargeable battery to charge fully, contact your dealer or
CASIO distributor about having it replaced.
• Never try to remove or replace the watch's rechargeable battery yourself. Use of the
wrong type of battery can damage the watch.
• The current time and all other settings return to their initial factory defaults whenever
battery power drops to Level 5 (pages E-35 and E-36) and when you have the
battery replaced.
• Leaving the watch in a desk drawer or other dark location for a long time can cause
it to enter the sleep state (page E-47) to conserve power.
E-34
• The flashing
indicator at Level 3 tells you that battery power is very low, and
that exposure to bright light for charging is required as soon as possible.
• At Level 5, all functions are disabled and settings return to their initial factory
defaults. Once the battery reaches Level 2 after falling to Level 5, reconfigure the
current time, date, and other settings.
• The watch's Home City code setting will change automatically to TYO (Tokyo)
whenever the battery drops to Level 5. If you are using the watch outside of the
Tokyo, Japan time zone, you will need to change the Home City code setting to
match your location whenever this happens.
• Display indicators reappear as soon as the battery is charged from Level 5 to Level 2.
• 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.
E-36
Charging Precautions
Certain charging conditions can cause the watch to become very hot. Avoid leaving
the watch in the areas described below whenever charging its rechargeable battery.
Also note that 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.
Warning!
Leaving the watch in bright light to charge its rechargeable battery 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
E-38
To configure the countdown timer
1. While the countdown start time is on the display in the
Countdown Timer Mode, hold down A until the current
countdown start time starts to flash, which indicates the
setting screen.
• If the countdown start time is not displayed, use the
procedure under "To use the countdown timer" (page
E-32) to display it.
2. Press C to scroll the minute setting value.
• To specify a countdown time of 100 minutes, set
00:00.
3. Press A to exit the setting screen.
Power Supply
This watch is equipped with a solar cell and a rechargeable battery that is charged by
the electrical power produced by the solar cell. The illustration shown below shows
how you should position the watch for charging.
Example: Orient the watch so its face is
pointing at a light source.
• The illustration shows how to position a
watch with a resin band.
• Note that charging efficiency drops when
any part of the solar cell is blocked by
clothing, etc.
• 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.
Battery Power Indicator and Recover Indicator
The battery power indicator on the display shows you the current status of the
rechargeable battery's power.
Level
Battery Power Indicator
1
All functions enabled.
2
All functions enabled.
3
Watch enters Timekeeping Mode and second
hand jumps every two seconds. Illumination and
(Charge Soon Alert)
beeper disabled.
4
All hands stop at 12 o'clock, all functions and
display indicators disabled.
5
All functions disabled.
• Performing illumination or beeper operations during a
short period may cause
display.
After some time, battery power will recover and
(recover) will disappear, indicating that the above
functions are enabled again.
• If
(recover) appears frequently, it probably means
Recover indicator
that remaining battery power is low. Leave the watch in
bright light to allow it to charge.
Charging Guide
The following table shows the amount of time the watch needs to be exposed to light
each day in order to generate enough power for normal daily operations.
Exposure Level (Brightness)
Outdoor Sunlight (50,000 lux)
Sunlight Through a Window (10,000 lux)
Daylight Through a Window on a Cloudy Day (5,000 lux)
Indoor Fluorescent Lighting (500 lux)
• For details about the battery operating time and daily operating conditions, see the
"Power Supply" section of the Specifications (page E-52).
• Stable operation is promoted by frequent exposure to light.
E-31
Solar cell
E-33
Function Status
E-35
(recover) to appear on the
E-37
Approximate
Exposure Time
8 minutes
30 minutes
48 minutes
8 hours
E-39
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