Casio GW6900-1V, GW69001V Illumination, Power Supply, ll l l, TYO, l ll, l ll, Screen, ll lll, Setting, Warning, Warning, Example:, Important, Approximate, (Brightness), Exposure Time

Operation Guide 3179

3.When the setting you want to change is flashing, use Dand Bto change it as described below.

Setting	Screen	Button Operation
Hours, Minutes		Use D(+) and B (–) to change the setting.

• To specify a countdown start time of 24 hours, set.

4.Press A to exit the setting screen.

To use the countdown timer

		Press D while in the Countdown Timer Mode to start the
		countdown timer.
		• The countdown timer operation continues even if you
		•	exit the Countdown Timer Mode.
l	l		Press Dwhile a countdown operation is in progress to
lll
l	l		pause it. Press Dagain to resume the countdown.
l ll
l	l
l
	ll	• To stop a countdown operation completely, first pause it
Current timer
			(by pressing D), and then press B. This returns the
time	Timer start time		countdown time to its starting value.

Illumination

•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.

•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.

Battery power	Level	Battery Power Indicator	Function Status
indicator	1		All functions enabled.
	2		All functions enabled.

Auto light switch on indicator

This watch has an EL (electro-luminescent) panel that causes the entire display to glow for easy reading in the dark. The watch’s auto light switch turns on illumination automatically when you angle the watch towards your face.

•The auto light switch must be turned on (indicated by the auto light switch on indicator) for it to operate.

•See “Illumination Precautions” for other important information about using illumination.

To illuminate the display manually

In any mode, press L to turn on illumination.

•The above operation turns on illumination regardless of the current auto light switch setting.

3	ll l		l l l	l	l l		l			Auto and manual receive,
	l				ll	l ll
	l					l			l	illumination, and beeper
	l				lll
	l l	l	l l l l			l				disabled.
						l		l	l
	(Charge Soon Alert)					l
4			l							Except for timekeeping and
	l		l							the CHG (charge) indicator,
			l
	l			l
	l									all functions and display
	l			l
		ll								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.

•

•You can use the procedure below to select either 1.5 seconds or 3 seconds as the illumination duration. When you press L, the illumination will remain on for about 1.5 seconds or 3 seconds, depending on the current illumination duration setting.

To specify the illumination duration

1. In the Timekeeping Mode, hold down Auntil the display contents start to flash. This is the setting screen.

2. Press C10 times until the current illumination duration

setting ( or ) appears.

3. Press Dto toggle the setting between

(approximately 1.5 seconds) and (approximately

3 seconds).

4.Press A to exit the setting screen.

About the Auto Light Switch

Turning on the auto light switch causes illumination to turn on, whenever you position your wrist as described below in any mode. Note that this watch features a “Full Auto EL Light,” so the auto light switch operates only when available light is below a certain level. It does not turn on the backlight under bright light.

Moving the watch to a position that is parallel to the ground and then tilting it towards you more than 40 degrees causes illumination to turn on.

•Wear the watch on the outside of your wrist.

Parallel to
ground	More than 40°

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 Lfor about three seconds to toggle the auto light switch on (auto light switch on indicator displayed) and off (auto light switch on indicator not displayed).

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

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	Solar cell
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.

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.

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. With this Home City code setting, the watch is

configured to receive the time calibration signals of Japan. If you are using the watch

in North America or Europe, or China you will need to change the Home City code

setting to match your location whenever the battery drops to Level 5.

• 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.

Recover indicator		• Performing illumination, or beeper operations during a
		short period may cause		(recover) to appear on the
ll lll		display.
l	l	After some time, battery power will recover and
l	l	(recover) will disappear, indicating that the above
l	ll
l	ll l l
		functions are enabled again.
		• If	(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

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		3 hours			18 hours		5 hours
(50,000 lux)
Sunlight Through a		9 hours			90 hours		24 hours
Window (10,000 lux)
Daylight Through a		14 hours			182 hours		49 hours
Window on a Cloudy
Day (5,000 lux)
Indoor Fluorescent		155 hours			- - - - - - - -		- - - - - - - -
Lighting (500 lux)

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

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