Casio DQ-643 User manual

USER’S GUIDE DQ-643
1
SETTING THE TIME
1. Open the battery compartment cover. Press the SET button (33
33
3)to cycle through the setting screens as shown
below.
•A sticker is affixed to the display of this clock when you purchase it. Be sure to remove the sticker before using
the clock.
•Depending on the clock model, the configuration of your clock may differ somewhat from that shown in the
illustration.
Alarm Off Alarm On
Day of the week
Current time
(Hour, minutes, seconds)
Snooze on indicator
Alarm time
Alarm on indicator
DATE (month - date)
PM indicator
Month and Day Setting Screen Time Setting Screen
Normal Timekeeping Screen
Year Setting Screen 12-hour/24-hour Timekeeping Screen
2. While the screen you want is on the display, use the Alarm Time Set buttons (22
22
2) to change the digits that are
flashing.
•Holding down 왕or 왓changes the flashing digits at high speed.
•You can set the year in the range of 2000 to 2039. The day of the week is set automatically in accordance with
the date setting.
•Pressing 왕or 왓while the Time Setting Screen is on the display causes the seconds count to be reset to 00.
•Each press of 왕or 왓while the 12-hour/24-hour Timekeeping Screen is on the display toggles between
12-hour and 24-hour timekeeping.
3. After making the settings you want, use the SET button (33
33
3) to display the Normal Timekeeping Screen.
•The clock automatically returns to the Normal Timekeeping Screen if you leave a setting screen on the display
for about three minutes without performing any operation.
Press 왕to increase
the flashing digits.Press 왓to decrease
the flashing digits.
GENERAL GUIDE
11
11
1Snooze/Light button
•Press to turn on the backlight for three or four seconds.
•Pressing this button while the alarm is sounding stops the alarm.
22
22
2Alarm Time Set buttons
Use these buttons to set the alarm time or current time.
33
33
3SET button
Use this button when setting the current time.
44
44
4RESET button
Press to reset the clock after replacing batteries.
55
55
5Alarm Switch
Use this switch to turn the alarm on and off, and to turn on the snooze alarm.

USER’S GUIDE DQ-643
2
USING THE ALARM
The alarm sounds and the backlight turns on when the alarm time you set is reached. You can also use the Alarm
Switch (55
55
5) to select the snooze alarm feature.
Setting the Alarm Time
Use the Alarm Time Set buttons (22
22
2) to set the alarm time.
Pressing an Alarm Time Set button (22
22
2) causes the alarm time to appear in place of the date on the display.
•Holding down 왕or 왓changes the digits at high speed.
Turning the Alarm On and Off
Use the Alarm Switch (55
55
5) on the side of the clock to turn the alarm on and off, and to select the snooze feature.
Description
The alarm sounds at the preset time for one
minute, and seven more times every five
minutes thereafter. Even if you stop the alarm
sound by pressing the Snooze/Light button
(11
11
1), the alarm operation is performed again
five minutes later.
•The indicator Zz flashes on the display to
indicate that the snooze feature is activated.
The alarm sounds at the preset time for one
minute.
The alarm does not sound.
Alarm Switch Setting
SNZ ON
Zz
ALM ON
( )
OFF
( )
USING THE LIGHT
Pressing the Snooze/Light button (11
11
1)turns on the light and illuminates the display for easy reading in the dark.
Important!
•Overuse of the light can shorten battery life.
BATTERY REPLACEMENT
Replace batteries whenever the display of the clock becomes dim and difficult to read.
1. Pressing down lightly on the battery compartment cover, slide it downwards and remove it.
2. Remove both old batteries.
3. Load new batteries. Make sure that their positive (+) and negative (–) ends face in the correct directions. If you
load batteries incorrectly, they can burst and damage the clock.
4. Replace the battery compartment cover.
5. Press the RESET button (44
44
4). Be sure to press the RESET button (44
44
4)after replacing batteries.
Battery precautions
•Be sure to load the batteries with their positive (+) and negative (–) ends facing correctly.
•Replace the batteries at least once a year, even if the current batteries are working properly.
•Never charge the batteries that come with the clock.
•Should the batteries ever leak while in the clock, wipe out the fluid with a cloth, taking care not to let any get onto
your skin.
•The batteries that come with the clock lose some of their power during transport and storage.
•Never mix old and new batteries, or batteries of different brands.
Alarm Time
Press to change the alarm
time setting (왕).
Press to change the alarm
time setting (왓).
Alarm Time Set buttons
•The alarm time appears in place of the date on the display whenever the alarm switch is set to ON or SNZ.
•The backlight also turns on for the first four seconds that the alarm sounds.
•The alarm sound changes over five levels as it sounds.
Stopping the Alarm
•When alarm is sounding, press the Snooze/Light button (11
11
1) to stop it. When the snooze feature is turned on,
the alarm will sound again in about five minutes.
•To turn off the snooze feature, slide the Alarm Switch (55
55
5) to OFF.