Casio 5142 Things to check before using the watch, Contents, Charging the Watch, Power Levels, Charging Guide

Operation Guide 5142

Things to check before using the watch

1.Press and hold the crown button (without unlocking the crown) for at

least two seconds to enter the Timekeeping Mode, and then observe the movement of the x Second Hand.

Is the x Second Hand moving smoothly at one-second intervals?

	NO		YES
Is the x Second Hand moving at		The watch is charged sufficiently.
two-second intervals or is it stopped		For details about charging, see
completely?		“Charging the Watch” (page E-16).
	YES		NEXT
Power is low. Charge the watch by placing		Go to step 2.
it in a location where it is exposed to light.
For details, see “Charging the Watch”
(page E-16).

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2. Check the Home City and the daylight saving time (DST) settings.

Use the procedure under “To confi gure Home City settings” (page E-45) to confi gure your Home City and daylight saving time settings.

Important!

Proper time calibration signal reception depends on correct Home City, time, and date settings in the Timekeeping Mode. Make sure you configure these settings correctly.

3.Set the current time.

ξTo set the time using a time calibration signal

See “To get ready for a receive operation” (page E-30).

ξTo set the time manually

See “Configuring Current Time and Date Settings Manually” (page E-55).

The watch is now ready for use.

ξFor details about the watch’s radio controlled timekeeping feature, see “Radio Controlled Atomic Timekeeping” (page E-24).

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Contents	E-40	To determine the watch’s current mode
	E-40	To return to the Timekeeping Mode from any other mode

E-2 About This Manual

E-3 Using the Crown

E-8 To disable crown button mode switching

E-9 To re-enable crown button mode switching

E-10 Things to check before using the watch E-16 Charging the Watch

E-41 To select a mode

E-44 Timekeeping

E-45 Configuring Home City Settings

E-45 To configure Home City settings

E-51 To toggle the Home City time between standard time and daylight saving time

E-23 To recover from the sleep state

E-24 Radio Controlled Atomic Timekeeping

E-30 To get ready for a receive operation

E-33 To perform manual receive

E-35 To check the result of the latest receive operation

E-37 Mode Reference Guide

E-12

E-53 To manually override a time calibration standard time/daylight saving time setting

E-55 Configuring Current Time and Date Settings Manually

E-55 To change the current time setting manually

E-59 To change the current date setting manually

E-63 Using the Stopwatch (Stopwatch Split Mode)

E-65 To perform elapsed time measurement

E-13

E-65 To perform an elapsed time operation

E-65 To pause at a split time

E-69 Using the Stopwatch (Stopwatch lap mode)

E-70 To enter and exit the Stopwatch Lap Mode

E-71 To perform an elapsed time operation

E-71 To perform lap time measurement

E-72 To recall lap data

E-73 Using the Countdown Timer

E-74 To specify the countdown start time

E-76 To perform a countdown timer operation

E-77 To stop the alarm

E-78 Using the Alarm

E-82 To stop the alarm

E-83 Checking the Current Time in a Different Time Zone

E-84 To view the time in another time zone

E-86 To check whether a time zone is AM or PM

E-86 To specify standard time or daylight saving time (DST) for a city

E-88 Adjusting Home Positions

E-89 To adjust home positions

E-93 Troubleshooting

E-105 Specifications

E-79 To change the alarm time setting

E-82 To check the AM/PM setting of the alarm

E-82 To turn the alarm on or off

E-14 E-15

Charging the Watch

The face of the watch is a solar panel that generates power from light. The generated power charges a built-in rechargeable battery, which powers watch operations. The watch charges whenever it is exposed to light.

Charging Guide

Whenever you are not	When wearing the watch,
wearing the watch, be sure	makes sure that its face is
to leave it in a location	not blocked from light by the
where it is exposed to light.	sleeve of your clothing.
ξ Best charging	ξ The watch may enter a
performance is achieved	sleep state (page E-22) if
by exposing the watch to	its face is blocked by your
light that is as strong as	sleeve even only partially.
possible.

Warning!

Leaving the watch in bright light for charging 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.

ξOn the dashboard of a car parked in direct sunlight

ξToo close to an incandescent lamp

ξUnder direct sunlight

Important!

ξKeep the watch in an area normally exposed to bright light when storing it for long periods. This helps to ensure that power does not run down.

ξStoring 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 power to run down. Make sure that the watch is exposed to bright light whenever possible.

E-16 E-17

Power Levels

You can get an idea of the watch’s power level by observing the movement of the x Second Hand in the Timekeeping Mode.

ξ If the x Second Hand is moving normally at one-second intervals, power is at Level 1.

ξ If the x Second Hand is moving at two-second intervals,



power is at Level 2, which is quite low. Expose the watch to light as soon as possible so it can charge.

Moves at two-second intervals.

Level	Hand Movement	Function Status
1	Normal.	All functions enabled
	x Second Hand moves at two-second intervals.	Beeper, time calibration signal
2		reception, and countdown timer
	n Day changes to 1 (home position).
		operation disabled
3	x Second Hand stopped.	All functions disabled
	z Hour Hand and c Minute Hand stopped at
	12 o’clock.

ξWhen power drops to Level 3, all functions will be disabled but the watch will continue to keep time internally for about one week. If you recharge the battery sufficiently during this period, the analog hands will move automatically to the correct setting and regular timekeeping will resume. After one week, all settings (including timekeeping) will be cleared. Recharging the battery will reset all settings to their initial factory defaults.

E-18 E-19