Casio 3150, MO0805-EA Illumination, Power Supply, About the Auto Light Switch, Battery Power Indicator and Recover Indicator, Charging Precautions, (Charge Soon Alert)

Operation Guide 3150

Illumination

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.

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

•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
lll			setting screen.
			2. Press the C button three times to move the
l	l
l	l		flashing to the seconds.
l
l	l	l
ll			3. While the seconds are flashing, press Bto

toggle the setting between 1.5 seconds ( ) and 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.

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

groundMore 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 (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 on.

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	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.

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

• 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.

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

7