Casio DQ-542 Operation Manual Download Page 1

Operation Guide DQ-542/542B

1

MA0508-EB

ILLUSTRATION

A sticker is affixed to the glass of the clock when you purchase it. Be sure to remove the sticker before using the
clock.

Depending on the clock model, its configuration may differ somewhat from that shown in the illustration.

Current time 
(Hour, minutes) 

Date 
(month – day) 

PM indicator 

Alarm time 

Alarm on indicator 

Alarm Off

Snooze Alarm On

Alarm On

Snooze on indicator 

Alarm on indicator 

GENERAL GUIDE

1

1

1

1

1

SNOOZE/LIGHT button

Press this button to illuminate the display for about three seconds.

Pressing this button while the alarm is sounding stops the alarm.

2

2

2

2

2

12 • 24/YEAR  button

Press this button to toggle between 12-hour and 24-hour timekeeping.

Pressing this button while “CALENDAR” is selected by the 

Mode switch

 

5

 advances the year setting.

3

3

3

3

3

MIN/DATE button

Pressing this button while “TM” is selected by the 

Mode switch

 

5

 advances the minute setting.

Pressing this button while “CALENDAR” is selected by the 

Mode switch

 

5

 advances the day setting.

4

4

4

4

4

HR/MONTH button

Pressing this button while “TM” is selected by the 

Mode switch

 

5

 advances the hour setting.

Pressing this button while “CALENDAR” is selected by the 

Mode switch

 

5

 advances the month setting.

5

5

5

5

5

Mode switch

NORMAL: For normal use
AL: For adjusting the alarm setting
TM: For adjusting the time setting
CALENDAR: For adjusting the date setting

6

6

6

6

6

Alarm Mode selector

SNZ: Snooze alarm on
ON: Alarm on
OFF: Alarm off

7

7

7

7

7

Battery

SETTING THE CLOCK

1. Slide the 

Mode switch

 

5

 to “TM”. This

causes the current time to flash on the
display.

2. Use the 

12 • 24/YEAR  button

 

2

MIN/

DATE button

 

3

, and 

HR/MONTH

button

 

4

 to set the time. Holding down

the 

MIN/DATE button

 

3

 or 

HR/

MONTH button

 

4

 changes the

corresponding setting at high speed.

Make sure you set the correct am/pm
time if you are using 12-hour
timekeeping. The PM indicator indicates
PM times, while nothing is indicated for
AM times.

The seconds count reverts to 00
automatically whenever you finish
adjusting the minute setting.

3. Slide the 

Mode switch

 

5

 to

“CALENDAR”. This causes the current
date to flash on the display.

4. Use the 

12 • 24/YEAR  button

 

2

,

 MIN/

DATE button

 

3

, and

 HR/MONTH

button

 

4

 to set the date. Holding down

any button advances the corresponding
setting at high speed.

You can set the year in the range of 2004
to 2039.

5. Slide the

 Mode switch

 

5

 to “NORMAL”. This will cause the figures on the display to

stop flashing.

PM indicator 

Hour Minutes 

Press to toggle between 
12-hour and 24-hour 
timekeeping.

Press to advance the 
minute setting.

Press to advance the 
hour setting.

Year 

Month Day 

Press to advance the 
year setting.

Press to advance the 
day setting.

Press to advance the 
month setting.

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