Casio 3147 Timekeeping, Battery Power Indicator and Recover Indicator, Charging Precautions, Read This Before You Set the Time and Date, LMH, Warning, Important

Operation Guide 3147

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 special 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 special rechargeable battery to charge fully, contact your dealer or CASIO distributor about having it replaced.

•Never try to remove or replace the watch’s special battery yourself. Use of the wrong type of battery can damage the watch.

•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 5 and when you have the battery replaced.

•Turn on the watch’s Power Saving function and keep it in an area normally exposed to bright light when storing it for long periods. This helps to keep the rechargeable battery from going dead.

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

Function Status

1

All functions enabled.

2

All functions enabled.

Battery power

3

ll

l l

l

l l

l

l

l

l

Auto and manual receive,

l

l

l

lll

illumination, beeper, and

l

l

l

indicator

l

l

l

ll

l

l

l l

l

l l

l

sensor operation disabled.

(Charge Soon Alert)

4

l l

Except for timekeeping and

l

the C (charge) indicator, all

l

ll

l

lcll

functions and display

ll l

indicators disabled.

5

All functions disabled.

• The flashing LOW 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 (indicated by M indicator) after falling to Level 5, reconfigure the current time, date, and other settings.

• 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.

	• Performing multiple sensor, illumination, or
	beeper operations during a short period may
	cause LMH (recover) to appear on the display.
	Illumination, alarm, countdown timer alarm,
	hourly time signal, and sensor operations will
	be disabled until battery power recovers.
	After some time, battery power will recover and
	LMH (recover) will disappear, indicating that
Recover indicator	the above functions are enabled again.

•Even if battery power is at Level 1 or Level 2, the Barometer/Thermometer Mode or Altimeter Mode sensor may be disabled if there is not enough voltage available to power it sufficiently. This is indicated by LMH (recover) on the display.

•If LMH (recover) appears frequently, it probably means that remaining battery power is low. Leave the watch in bright light to allow it to charge.

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

Charging Guide

After a full charge, timekeeping remains enabled for up to about five months.

•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)	Approximate
	Exposure Time
Outdoor Sunlight (50,000 lux)	5 minutes
Sunlight Through a Window (10,000 lux)	24 minutes
Daylight Through a Window on a Cloudy Day (5,000 lux)	48 minutes
Indoor Fluorescent Lighting (500 lux)	8 hours

•Since these are the specs, we can include all the technical details.

•Watch not exposed to light

•Internal timekeeping

•Display on 18 hours per day, sleep state 6 hours per day

•1 illumination operation (1.5 seconds) per day

•10 seconds of alarm operation per day

•1 hour of altimeter measurement at 5-second interval, once per month

•2 hours of barometric pressure measurement per day

•6 minutes of signal reception per day

•Stable operation is promoted by frequent exposure to light.

Recovery Times

The table below shows the amount exposure that is required to take the battery from one level to the next.

Exposure Level	Approximate Exposure Time
(Brightness)	Level 5	Level 4	Level 3		Level 2		Level 1
				▲		▲		▲
Outdoor Sunlight		1 hour			14 hours		4 hours
(50,000 lux)
Sunlight Through a		4 hours			69 hours		19 hours
Window (10,000 lux)
Daylight Through a		6 hours			139 hours		38 hours
Window on a Cloudy
Day (5,000 lux)
Indoor Fluorescent		62 hours			- - - - - - - -		- - - - - - - -
Lighting (500 lux)

•The above exposure time values are all for reference only. Actual required exposure times depend on lighting conditions.

Timekeeping

Use the Timekeeping Mode to set and view the current time and date.

•In the Timekeeping Mode, you can use the buttons shown in the illustration to display the timekeeping display you want.

•Pressing the B button once will display the current time in the city you last viewed in the World Time Mode.

•Holding down the B button for about five seconds will swap the World Time City and your current Home Time City.

•To swap the cities back again, hold down the B button for about five seconds again.

TYO Time		City you last viewed in the
	Day of week	World Time Mode	Time in city
			you last viewed
	B		in the World
			Time Mode
		▲
	▲		TYO Time
	Release B.
Hour :	Seconds
Minutes	▲	Hold down B for
	Hold down B for	▲five seconds.
TYO Time	five seconds.
		UTC Time
	Release B.		Time in city
		▲	you last
	▲		viewed in the
			World Time
	B		Mode

Time in city you last viewed in the World Time Mode

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 Mode city codes are displayed in accordance with the time and date settings you configure in the Timekeeping Mode.

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