Manual Casio 5415 - PRG-280 (page 2 of 8) (English)

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E-8

Selecting a Mode

• The illustration below shows which buttons you need to press to navigate between modes.

• To return to the Timekeeping Mode from any other mode, hold down

for about two seconds.

World Time ModeStopwatch Mode

Countdown Timer Mode

Alarm Mode

Mode dial hand

World Time ModeStopwatch Mode

Countdown Timer Mode

Alarm Mode

Mode dial hand

E-9

• The mode dial hand indicates the watch’s current mode.

Thermometer Mode

Timekeeping Mode

Digital Compass Mode

Mode dial hand

Thermometer Mode

Timekeeping Mode

Digital Compass Mode

Mode dial hand

E-10

General Functions (All Modes)

The functions and operations described in this section can be used in all of the modes.

Direct Timekeeping Mode Access

• To enter the Timekeeping Mode from any other mode, hold down

for about two seconds.

Auto Return Features

• The watch will automatically return to the Timekeeping Mode if you do not perform any button operation

for a particular amount of time in each mode.

Mode Name Approximate Elapsed Time

Alarm, Digital Compass 2 to 3 minutes

Thermometer 1 to 2 minutes

Setting screen (digital setting ﬂ ashing) 2 to 3 minutes

Initial Screens

When you enter the Alarm, World Time, or Digital Compass Mode, the data you were viewing when you

last exited the mode appears ﬁ rst.

Scrolling

The

and

buttons are used on the setting screen to scroll through data on the display. In most

cases, holding down these buttons during a scroll operation scrolls through the data at high speed.

E-11

Digital Meter

• The digital meter indicates the seconds count in the Timekeeping Mode (page E-12), World Time Mode

(page E-37), and Timer Mode (page E-42). In the Stopwatch Mode (page E-40) it indicates the

1/10-second count.

• While viewing bearing memory contents in the Digital Compass mode (page E-29), the digital meter

shows a bearing pointer.

Digital Meter

E-12

Timekeeping

Use the Timekeeping Mode to view the current time and date, and the day of the week.

• Each press of

in the Timekeeping Mode will change screen contents as shown below.

• The digital meter shows the seconds count.

Day of week

Seconds

Hour : Minutes

Month Day

Hour hand

Second hand

Digital meter

Minute hand

Mode dial

hand

PM indicator

Date Screen Time Screen

E-13

Conﬁ guring Home City Settings

There are two Home City settings: actually selecting the Home City, and selecting either standard time or

daylight saving time (DST).

To conﬁ gure Home City settings

1. In the Timekeeping Mode, hold down

until

ADJ

appears in the

lower display.

• When you release

(after ADJ appears), SET will be ﬂ ashing in

the upper display. This is the setting mode.

• The watch will exit the setting mode automatically if you do not

perform any operation for about two or three minutes.

2. Use

(East) and

(West) to scroll through the available city codes.

• Keep scrolling until the city code you want to select as your Home

City is shown in the lower display.

• For details about city codes, see the “City Code Table” at the back

of this manual.

3. Press

• This will cause the DST indicator to appear in the upper display

and the DST setting of the currently selected Home City to appear

in the lower display.

Press

to toggle the DST setting between daylight saving time (

)

and standard time (

OFF

• Note that you cannot switch between standard time and daylight

saving time (DST) while UTC is selected as your Home City.

City code and city name

DST indicator

City code and city name

DST indicator

E-14

5. After all of the settings are the way you want, press

to exit the setting screen.

• The DST indicator will be on the upper display while daylight saving time is turned on.

Note

• After you specify a city code, the watch will use UTC* offsets in the World Time Mode to calculate

the current time for other time zones based on the current time in your Home City.

* Coordinated Universal Time, the world-wide scientiﬁ c standard of timekeeping.

The reference point for UTC is Greenwich, England.

To change the daylight saving time (summer time) setting

1. In the Timekeeping Mode, hold down

until

ADJ

appears in the

lower display.

• When you release

(after ADJ appears), SET will be ﬂ ashing in

the upper display.

2. Press

• This will cause the DST indicator to appear in the upper display

and the DST setting of the currently selected Home City to appear

in the lower display.

3. Press

to toggle the DST setting between daylight saving time (

) and standard time (

OFF

4. After all of the settings are the way you want, press

to exit the setting screen.

• The DST indicator will be on the upper display while daylight saving time is turned on.

E-15

Conﬁ guring Current Time and Date Settings

You can use the procedure below to adjust the Timekeeping Mode time and date settings if they are off.

Changing the digital Home City data should cause the analog time setting to change accordingly. If the

analog time does not indicate the digital time, check the home positions of the hands and make

adjustments if necessary (page E-18).

To change the current time and date settings

1. In the Timekeeping Mode, hold down

until

ADJ

appears in the

lower display.

• When you release

(after ADJ appears), SET will be ﬂ ashing in

the upper display.

City codeCity code

Operation Guide 5415

I replaced both batteries in Pro Trek PRG-280 watch. Watch is running.. second hand moving.. in timekeeping mode when holding in the "adjust" button.. nothing changes. Where day of week should display is showing the word "OPEN". Suggestions on what i need to do/ Submitted on 1-9-2021 at 17:10
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Casio 5415 - PRG-280 Manual

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