
1583/1584-4
A
CD
L
B
Solar cell panel
Battery power indicator
Level Indicator Functional Status
1
2
3
4
5
All functions enabled.
All functions enabled.
Alarms, Hourly Time Signal, backlight disabled.
Alarms, Hourly Time Signal, backlight, display disabled;
timekeeping enabled.
Alarms, Hourly Time Signal, backlight, display, timekeeping
disabled.
/
/
/
/
/
This watch is equipped with a solar cell and a
storage battery (secondary battery) that is
chargedby the electrical powerproduced by the
solar cell.
•The area outside of the LCD digital areas is a
solar cell panel that picks up available light to
charge the storage battery.
•ASleep Mode is providedto conserve battery
power.
•With the Module 1584, battery power is
indicated by .
Important!
•Storingthe watch forlong periodsin an areawhere there isno lightor wearing
it in such a way that it is blocked from exposure to light can cause storage
battery power to run down. Be sure that the watch is normally exposed to
light whenever possible.
•Thiswatch employs a solarcell that converts lightinto electricity that charges
a built-in storage battery. Normally, the storage battery should not need
replacement, but after very long use over a number of years, the storage
batterymay loseits abilityto achievea fullcharge. Shouldyou noticeproblems
withgettingthe storage battery toa full charge, contactyour dealer or CASIO
distributor about having the storage battery replaced.
•The storage battery should be replaced with a CASIO-specified ML-2020
battery only. Other storage batteries can cause damage to the watch.
•Be sure to put the watch into its Sleep Mode and keep in an area normally
exposedto lightwhen storing itfor longperiods.This helps tokeep thestorage
battery from going dead.
Battery Power Indicator
The battery power indicator on the display shows you the current status of the
storage battery’s power.
BATTERY
A
CD
L
B
[Sleep Mode]
To use the countdown timer
Press Lwhile in the Countdown Alarm Mode to start the countdown timer.
•When the countdown reaches zero and auto repeat is turned off, the alarm
sounds for 10 seconds or until you stop it by pressing any button. The
countdown time is automatically reset to its starting value after the alarm
stops.
•Press Lwhile a countdown operation is in progress to pause it. Press L
again to resume the countdown.
•To completely stop a countdown operation, first pause it (by pressing L),
and then press B. This returns the countdown time to its starting value.
To turn auto repeat on and off
1. Hold downAwhile in the CountdownAlarm
Mode until the hours digit starts to flash on
the display.
2. Press Lto turn auto repeat on (AUTO
displayed) and off (AUTO not displayed).
3. Press Ato return to the Countdown Alarm
Mode.
•The auto repeat on indicator (AUTO)
appears in the upper part of the display only
in the start time setting screen (starting time
digits flashing).
•When the end of the countdown is reached while auto repeat is on, the alarm
sounds,but thecountdownstartsagainautomatically wheneverthe countdown
reaches zero.You can stop timing by pressing L, and manually reset to the
starting countdown time by pressing B.
•Normally, an alarm tone sounds for about 10 seconds when the end of the
countdown is reached. If you use auto repeat with start time of 10 seconds or
less, the alarm tone sounds for only one second.
•Frequent use of auto repeat with a short countdown time can reduce the
chargeof the storagebattery and causethe countdowntimealarm tobecome
disabled, so it does not sound.
To turn progress beeper on and off
PressBwhile inthe CountdownAlarmMode (whilethe countdownis completely
stopped or ongoing) to turn the progress beeper on ( displayed) and off (
not displayed).
•When the progress beeper is turned on, the watch beeps as the countdown
time passes the 10, 5, 4, 3, 2, and 1-minute marks, and the 50, 40, 30, 20,
10, 5, 4, 3, 2, and 1-second marks.
A
CD
L
B
Auto repeat on indicator
•AtLevel 4,the displayis disabledbut timekeepingand otherfunctionscontinue
to operate internally. Pressing any button causes the Timekeeping Mode
screen to appear for two or three minutes.
•At Level 5, all functions are disabled. Functions are enabled once again after
the storage battery is charged, but anything previously stored in memory is
lost. Because of this, you must set the current time and alarms, and re-input
Telememo data items after the storage battery is charged.
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 storage
battery.
Warning!
Leaving the watch in sunlight to charge its storage battery can cause it to
become quite hot. Take care when handling the watch to avoid burn injury.
•On the dashboard of a car parked in direct sunlight
•Too close to an incandescent lamp
•Under direct sunlight or in any other area exposed to intense heat for long
periods
Charging Guide
Required charge time when the backlight is used for two seconds and the alarm
sounds for 20 seconds per day:
•Approximately 8 hours of 500 lux (indoor fluorescent lighting) per day
•Approximately 1 hour 15 minutes of 3,000 lux (direct fluorescent lighting) per
day
•Approximately50 minutesof 36,000 lux(afternoon outdoorsunlight) per week
(7 minutes per day)
Required charge time when the backlight is used for 30 seconds and the alarm
sounds for 20 seconds per day:
•Approximately 4 hours 30 minutes of 3,000 lux (direct fluorescent lighting)
per day
•Approximately 2 hours 20 minutes of 36,000 lux (afternoon outdoor sunlight)
per week (20 minutes per day)
Using the Sleep ModeIn any mode (except while figures are flashing
on the display for input), hold down Cfor about
two seconds.
•This enters the Sleep Mode, which clears the
display. Timekeeping and other functions
continue to be performed internally.
•Alarms, the Hourly Time Signal, and the
backlight are disabled while the watch is in
the Sleep Mode.
•Pressinganybutton (exceptA)exitsthe Sleep
Mode and enters the Timekeeping Mode.
About Auto Display
Auto Display is a demonstration feature that continually changes the contents
ofthe digital display. Note thatyoucannot use anyof the watch’s otherfunctions
while Auto Display is operating.
To turn off Auto Display
Hold down Afor about two seconds until the watch beeps.
To turn on Auto Display
1. In any mode (except while figures are flashing on the display for input), hold
down Cfor about two seconds to enter the Sleep Mode.
2. Hold down Afor about two seconds until the watch beeps. This indicates
that Auto Display is on.
•You cannot turn onAuto Display while a setting screen (indicated by flashing
digits) is on the display.
•Leaving the watch in a dark area can cause Auto Display operation to stop.
Normal operation should resume when the watch is again exposed to light.
•Auto Display cannot be turned on while the storage battery is at Level 4 or
Level5. AutoDisplay alsoturns offautomatically wheneverthe storagebattery
drops to Level 4 or Level 5.