Casio 3160 l ll, Power Supply, Reference, Battery Power Indicator and Recover Indicator, lll l lll, Charging Precautions, Button Operation Tone, Power Saving Function

Operation Guide 3160

Warning!

•Always make sure you are in a safe place whenever you are reading the display of the watch using the auto light switch. Be especially careful when running or engaged in any other activity that can result in accident or injury. Also take care that sudden illumination by the auto light switch does not startle or distract others around you.

•When you are wearing the watch, make sure that its auto light switch is turned off before riding a bicycle or operating a motorcycle or any other motor vehicle. Sudden and unintended operation of the auto light switch can create a distraction, which can result in a traffic accident and serious personal injury.

To turn the auto light switch on and off

In the Timekeeping Mode, hold down Bfor about three seconds to toggle the auto light switch on (A.EL displayed) and off (A.EL not displayed).

•The auto light switch on indicator (A.EL) is on the display in all modes while the auto light switch is turned.

Power Supply

This watch is equipped with a solar cell and a special rechargeable battery (secondary 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.	Solar cell
• 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.

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.
	3	ll l l l		l l l l			ll		Illumination and beeper
		l		l		l		l	disabled.
		l			l			l
		l		l l ll	l	l		l
		l l l l l				l
						l l
Battery power		(Charge Soon Alert)						l
	4	ll							Except for timekeeping and
indicator		l	l						the CHG (charge) indicator,
		l		l
		l ll							all functions and display
		l	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 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 illumination, or beeper operations during a

				short period may cause		(recover) to appear on
	lll l lll			the display.
l				After some time, battery power will recover and
			l	(recover) will disappear, indicating that the above
l
			l	functions are enabled again.
	l		l
			l
l		l l l l
				• If	(recover) appears frequently, it probably
Recover indicator				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

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

•For details about the battery operating time and daily operating conditions, see the “Power Supply” section of the Specifications.

•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		2 hours			20 hours		6 hours
(50,000 lux)
Sunlight Through a		8 hours			99 hours		27 hours
Window (10,000 lux)
Daylight Through a		15 hours			201 hours		54 hours
Window on a Cloudy
Day (5,000 lux)
Indoor Fluorescent		171 hours			- - - - - - - -		- - - - - - - -
Lighting (500 lux)

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

Reference

This section contains more detailed and technical information about watch operation. It also contains important precautions and notes about the various features and functions of this watch.

Button Operation Tone

The button operation tone sounds any time you press one of the watch’s buttons. You can turn the button operation tone on or off as desired.

• Even if you turn off the button operation tone, alarms, the Hourly Time Signal, and other beepers all operate normally.

To turn the button operation tone on and off

In any mode (except when a setting screen is on the display), hold down C to toggle the button operation tone on ( not displayed) and off ( displayed).

•Holding down C to turn the button operation tone on or off also causes the watch’s current mode to change.

•Theindicator is displayed in all modes when the button operation tone is turned off.

Power Saving Function

Power saving indicator			When turned on, the Power Saving function enters a sleep
			state automatically whenever the watch is left in an area
			for a certain period where it is dark. The table below
			shows how watch functions are affected by the Power
			Saving function.
Elapsed Time			Display	Operation
	in Dark
60 to 70 minutes		Blank, with Power Saving		All functions enabled, except for the
		indicator (PS) flashing		display
6 or 7 days		Blank, with Power Saving		Beeper tone, illumination, and display
		indicator (PS) not flashing		are disabled.

•Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.

•The watch will not enter the sleep state between 6:00 AM and 9:59 PM. If the watch is already in the sleep state when 6:00 AM arrives, however, it will remain in the sleep state.

To recover from the sleep state

Perform any one of the following operations.

•Move the watch to a well-lit area.

•Press any button.

•Angle the watch towards your face for reading.

To turn Power Saving on and off

	l ll	ll					1. In the Timekeeping Mode, hold down Auntil the city
							code starts to flash, which indicates the setting screen.
ll	l			l ll
		l
l							2. Press C nine times until the Power Saving on/off
l
	ll l					l	screen appears.
	l					l
	l					l	3. Press D to toggle Power Saving on ( ) and off (	).
		l				l
			l		l	l	4. Press A to exit the setting screen.
							• The Power Saving indicator (PS) is on the display in all
	On/Off status						modes while Power Saving is turned on.

Auto Return Features

•If you leave a screen with flashing digits on the display for two or three minutes without performing any operation, the watch exits the setting screen automatically.

Scrolling

The Band D are used in various modes and setting screens to scroll through data on the display. In most cases, holding down these buttons during a scroll operation scrolls at high speed.

Initial Screens

When you enter the World Time Mode or Alarm Mode, the data you were viewing when you last exited the mode appears first.

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