Casio 5251(OC) Operation Manual Download Page 4

Operation Guide 5251 (OC)

E-31

Hands off by more than 

±

15 minutes 00 seconds

In this case, check the position of the 

v

 

Day Indicator

 fi rst.

 Press 

7. 

A

 and check the 

v

 

Day Indicator

.

 The 

 

x

v

 

Day Indicator

 should show 

1

 and the 

x

 

Second Hand

 should align with the bottom of the 

v

 

Day Indicator

. This can take up to 90 seconds.

 If the 

 

x

1

 is not in the center of the 

v

 

Day Indicator

, rotate the crown to center it. A high-speed 

movement feature (one month maximum) is available when adjusting the home position of the 

v

 

Day 

Indicator

.

 Press 

8. 

A

.

 The 

 

x

z

 

Hour Hand

c

 

Minute Hand

 and 

x

 

Second Hand

 should move to their correct home positions 

(12 o’clock). This can take up to about 10 minutes.

 Rotate the crown to adjust the positions of the hands.

9. 

 A high-speed forward movement feature (12 hours maximum) and a high-speed backward 

 

x

movement feature (one hour maximum) are available when adjusting the positions of the hands. See 
“Crown Operations” (page E-4).

 Push the crown back in.

10. 

 This exits home position adjustment and returns to regular timekeeping. Note that it can take up to 

 

x

about 10 minutes before the watch returns to regular timekeeping.

Note

 You can stop hand adjustment at any time by pushing the crown back in. This will return to regular 

 

x

timekeeping with the hands at positions refl ecting any changes you made up to that point.

E-30

Hands off within 

±

15 minutes 00 seconds

 Rotate the crown to move the 

4. 

x

 

Second Hand

 and 

c

 

Minute Hand

 to their correct home positions 

(12 o’clock).

 A high-speed movement feature (15 minutes maximum) is available when adjusting the home 

 

x

positions of the hands. See “Crown Operations” (page E-4).

 Press 

5. 

A

 and check the 

v

 

Day Indicator

.

 The 

 

x

v

 

Day Indicator

 should show 

1

 and the 

x

 

Second Hand

 

should align with the bottom of the 

v

 

Day Indicator

. This can 

take up to 90 seconds.
 If the 

 

x

1

 is not in the center of the 

v

 

Day Indicator

, rotate the 

crown to center it. A high-speed movement feature (one month 
maximum) is available when adjusting the home position of the 

v

 

Day Indicator

. See “Crown Operations” (page E-4).

 Push the crown back in.

6. 

 This exits home position adjustment and returns to regular timekeeping. Note that it can take up to 

 

x

about 10 minutes before the watch returns to regular timekeeping.
 This completes home position adjustment when the hands are off within 

 

x

±

15 minutes 00 seconds.

>

@

E-29

Adjusting the Home Positions

Strong magnetism or impact can cause the hands and/or day of the watch to be off, even if the watch is 
able to perform the calibration signal receive operation. The watch automatically detects and adjusts the 
position of the 

x

 

Second Hand

 as required.

Note, however, that the watch does not automatically correct the positions of the 

z

 

Hour Hand

c

 

Minute 

Hand

, or 

v

 

Day Indicator

. You need to correct the positions of these manually.

Adjusting Home Positions Manually

Important!

 You do not need to perform the procedure in this section if the watch is indicating the hour, minute, and 

 

x

day normally.

 Pull the crown out to the fi rst click.

1. 

 Hold down 

2. 

A

 for at least fi ve seconds until the 

x

 

Second Hand

 moves to 

12 o’clock.

 The 

 

x

c

 

Minute Hand

 and 

x

 

Second Hand

 should move to their correct 

home positions (12 o’clock) when you release 

A

. If they do, advance to 

step 5.

 What you should do next depends on how much the hand positions are off, 

3. 

as described below.

 Off within 

 

x

±

15 minutes 00 seconds: Perform steps 4, 5, and 6 of this 

procedure.
 Off by more than 

 

x

±

15 minutes 00 seconds: Perform steps 7, 8, 9, and 10 

of this procedure.

+

@

B

E-28

 After the tens digit setting is the way you want, press 

8. 

A

.

 The 

 

x

x

 

Second Hand

 will move to the ones digit of the 

current year setting.

 Rotate the crown to move the 

9. 

x

 

Second Hand

 to the 

year ones digit setting you want.

Note

 If you want to continue on to the time setting, press 

 

x

A

 

and then perform the procedure starting from step 2 
under “To set the time manually” (page E-24). 

 At the top of a minute (based on the time signal on the radio, TV, etc.), push the crown back in to 

10. 

restart timekeeping.

 The 

 

x

x

 

Second Hand

 will restart timekeeping from 0 seconds (12 o’clock).

Note

 The watch automatically makes adjustments in the day setting to account for different length months 

 

x

and leap year.

@

0

2

3

4

9

8

1

7

5

6

Year ones Digit

E-27

@

Dec

Nov

Feb

Mar

Apr

Oct

Sep

Aug

Jan

Jul

May

Jun

 After the day setting is the way you want, press 

4. 

A

.

 The 

 

x

x

 

Second Hand

 will move to the current month 

setting.

 Rotate the crown to move the 

5. 

x

 

Second Hand

 to the 

month you want.

@

00

20

30

40

90

80

10

70

50

60

Year tens Digit

  After the setting is the way you want, press 

6. 

A

.

 The 

 

x

x

 

Second Hand

 will move to the tens digit 

setting of the current year.

 Rotate the crown to move the 

7. 

x

 

Second Hand

 to the 

year tens digit setting you want.

E-26

To set the date manually

 Pull the crown out to the second click.

1. 

 The 

 

x

x

 

Second Hand

 will move to 

A

 (

AM

) or 

P

 (

PM

) in 

accordance with the current time.
 Use 

 

x

A

 to cycle through the available settings in the 

sequence shown below.

Hour and minutes

Year (ones digit)

Year (tens digit)

AM/PM

Day

Month

A

A

A

A

A

A

 Press 

2. 

A

 twice.

 The 

 

x

x

 

Second Hand

 will align with the bottom of the 

v

 

Day 

Indicator

.

 Rotate the crown to change the day setting.

3. 

Important!

 Note that you can change the day setting only by advancing 

 

x

to the next day. You cannot go back to a previous day. To 
change from 30 to 29, for example, you must change the 
setting in the sequence 30 

 31 

 1 ... 

 29.

@

>

>

@

E-25

 While the hour and minutes setting is selected, rotate the crown to change the current time setting.

2. 

Note

 A high-speed movement feature (one hour maximum) is available when setting the time. See “Crown 

 

x

Operations” (page E-4).

 After the time setting is the way you want, press 

3. 

A

 change to the AM/PM setting.

 The 

 

x

x

 

Second Hand

 will move to 

A

 (

AM

) or 

P

 (

PM

).

 Rotate the crown to move the 

4. 

x

 

Second Hand

 to the AM/PM setting you want.

 If you want to continue on to the date setting, press 

 

x

A

 and then perform the procedure starting from 

step 3 under “To set the date manually” (page E-26).

 At the top of a minute (based on the time signal on the radio, TV, etc.), push the crown back in to 

5. 

restart timekeeping.

 The 

 

x

x

 

Second Hand

 will restart timekeeping from 0 seconds (12 o’clock).

E-24

 Push the crown back in.

3. 

 The 

 

x

x

 

Second Hand

 will perform movement that indicates whether the watch’s battery requires 

charging. After that, regular timekeeping will resume. See “To use the charging guide” (page E-13).

Confi guring Time and Date Settings Manually

You should confi gure time and date settings manually when you are in an area where time calibration 
signal reception is not possible for some reason.

Important!

 It is recommended that you allow the watch to make time and date adjustments automatically when in 

 

x

an area where the time calibration signal is receivable.

To set the time manually

 Pull out the crown to the second click.

1. 

 The 

 

x

x

 

Second Hand

 will move to 

A

 (

AM

) or 

P

 (

PM

) in 

accordance with the current time.
 Use 

 

x

A

 to cycle through the available settings in the 

sequence shown below.

Hour and minutes

Year (ones digit)

Year (tens digit)

AM/PM

Day

Month

A

A

A

A

A

A

@

Summary of Contents for 5251(OC)

Page 1: ...ge E 24 and when performing x home position adjustment page E 29 E 4 Crown Operations The crown can be pulled out to one of two click positions Never apply undue force when pulling out the crown Important When pulling out the crown avoid using undue force which creates the risk of personal injury to your x fingers and fingernails and of watch malfunction First click For selecting the location settin...

Page 2: ... 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 Charging Guide The charging guide causes the x Second Hand to perform movement that gives you a rough idea of whether the watch needs to be exposed to light in order to charg...

Page 3: ...en try again See To get ready for a receive operation page E 18 E 19 Signal reception may be difficult or even impossible under the conditions described below x Inside or among buildings Inside a vehicle Near household appliances office equipment or a mobile phone Near a construction site airport or other sources of electrical noise Near high tension power lines Among or behind mountains What you sh...

Page 4: ...n x 15 minutes 00 seconds Perform steps 7 8 9 and 10 of this procedure B E 28 After the tens digit setting is the way you want press 8 A The x x Second Hand will move to the ones digit of the current year setting Rotate the crown to move the 9 x Second Hand to the year ones digit setting you want Note If you want to continue on to the time setting press x A and then perform the procedure starting ...

Page 5: ...Cause Remedy Page Your location setting is wrong Check your location setting and correct it if necessary E 22 There is not enough power for signal reception Expose the watch to light to charge it E 10 E 33 Hand movement is stopped The watch may have been exposed to magnetism which will cause the hands to stop at their current positions Pull the crown out to the first click or press a button to res...

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