Casio 5235 (OC) Operation Manual Download Page 1

Operation Guide 5235 (OC)

E-7

Charging the Watch

The face of the watch is a solar panel that generates power from light. The generated power charges a 
built-in rechargeable battery, which powers watch operations. The watch charges whenever it is exposed 
to light.

Charging Guide

Whenever you are not 
wearing the watch, be sure 
to leave it in a location where 
it is exposed to light.

 Best charging 

 

x

performance is achieved 
by exposing the watch to 
light that is as strong as 
possible.

When wearing the watch, makes 
sure that its face is not blocked 
from light by the sleeve of your 
clothing.

 The watch may enter a sleep 

 

x

state (page E-10) if its face is 
blocked by your sleeve even 
only partially.

Warning!
Leaving the watch in bright light for charging can cause it to become quite hot. Take care when 
handling the watch to avoid burn injury. The watch can become particularly hot when exposed to 
the following conditions for long periods.

 On the dashboard of a car parked in direct sunlight

 

x

 Too close to an incandescent lamp

 

x

 Under direct sunlight

 

x

E-6

E-30 Troubleshooting

E-34 Specifi cations

E-5

Contents

E-2 

About This Manual

E-3 

Things to check before using the watch

E-7 

Charging the Watch

E-10 

To recover from the sleep state

E-11  Radio Controlled Atomic Timekeeping

E-13 

To get ready for a receive operation

E-15 

To perform manual receive

E-16 

To check the result of the latest receive operation

E-16 

To turn auto receive on and off

E-18  Function and Button Operation Guide

E-19 Confi guring Home City Settings

E-19 

To confi gure Home City settings

E-21 

To switch between standard time and summer time manually

E-23 Confi guring Current Time and Date Settings Manually

E-23 

To change the current time setting manually

E-25 

To change the current date setting manually

E-27  Adjusting Home Positions

E-28 

To adjust home positions manually

E-4

3.  Set the current time.

 

 

x

To set the time using a time calibration signal

See “To get ready for a receive operation” (page E-13).
 

 

x

To set the time manually

See “Confi guring Current Time and Date Settings Manually” (page E-23).

The watch is now ready for use.

 For details about the watch’s radio controlled timekeeping feature, see “Radio Controlled Atomic 

 

x

Timekeeping” (page E-11).

E-3

Things to check before using the watch

1.  Observe the movement of the 

x

 

Second Hand

.

Is the 

x

 

Second Hand

 moving smoothly at one-second intervals?

Is the 

x

 

Second Hand

 moving at two-second intervals 

or is it stopped completely? 

Go to step 2.

The watch is charged. For details about 
charging, see “Charging the Watch” 
(page E-7).

Power is low. Charge the watch by placing it in a 
location where it is exposed to light. For details, see 
“Charging the Watch” (page E-7).

NO

YES

YES

NEXT

2.  Check the Home City.

Use the procedure under “To confi gure Home City settings” (page E-19) to confi gure your Home City.

Important!

Proper time calibration signal reception depends on correct Home City, time, and date settings. Make 
sure you confi gure these settings correctly.

E-2

About This Manual

Operations are performed using the watch’s crown, and the two buttons 
indicated by the letters 

A

 and 

B

 in this manual.

Hand Functions

 Hour Hand

 Second Hand

 Minute Hand

 Day Indicator

This User’s Guide uses numbers shown above to identify watch hands and 
indicators.

About the crown

Some of the operations of this watch are performed by pulling out the crown, while other operations are 
performed by pushing the crown in.

 Button operations may become disabled after you perform a crown operation. If this happens, rotate 

 

x

the crown slightly. This should restore button operations.

Important!

 The 

 

x

A

 button is designed to protect against accidental pressing. Use a thin pointed 

object to press the depression of the button to operate it.
 In the illustrations in this manual, the 

 

x

A

 button is emphasized for ease of 

understanding.

+

>

@

B

E-1

ENGLISH

Congratulations upon your selection of this CASIO watch.

 Note that the product illustrations in this manual are intended for reference only, and so the actual 

 

x

product may appear somewhat different than depicted by an illustration.

This watch does not have a city code that corresponds to the UTC offset of –3.5 hours. Because of 
this, the radio-controlled atomic timekeeping function will not display the correct time for Newfoundland, 
Canada.

Note that CASIO COMPUTER CO., LTD. assumes no responsibility for any damage or loss suffered by 
you or any third party arising through the use of this product or its malfunction.

MA1201-EB

Summary of Contents for 5235 (OC)

Page 1: ...adio controlled timekeeping feature see Radio Controlled Atomic x Timekeeping page E 11 E 3 Things to check before using the watch 1 Observe the movement of the x Second Hand Is the x Second Hand moving smoothly at one second intervals Is the x Second Hand moving at two second intervals or is it stopped completely Go to step 2 The watch is charged For details about charging see Charging the Watch ...

Page 2: ...ll have to adjust the settings manually as required See Configuring Current Time and Date Settings Manually page E 23 for more information This section explains how the watch updates its time settings when the city code selected as the Home City is in Japan North America Europe or China and is one that supports time calibration signal reception If your Home City Code setting is this The watch can ...

Page 3: ... of timekeeping The reference point for UTC is Greenwich England E 19 Configuring Home City Settings The Home City is location where you will normally use the watch You can choose from a selection of city codes that represent 29 cities around the globe To configure Home City settings Note This watch does not have a city code that corresponds to Newfoundland x Pull out the crown 1 This will cause th...

Page 4: ...tment is complete when all hands are at 12 o clock To exit the home position adjustment operation and return to regular timekeeping push the crown back in E 27 Adjusting Home Positions Strong magnetism or impact can cause the hands and or day setting to be off even if the watch is able to perform the signal receive operation Auto Home Position Adjustment Auto correction of hand home positions corr...

Page 5: ... JJY Frequency 60 0 kHz Fort Collins Colorado the United States Call Sign WWVB Frequency 60 0 kHz Shangqiu City Henan Province China Call Sign BPC Frequency 68 5 kHz Other Power Saving Low battery alert Auto Correction of Hand Home Positions Power Supply Solar panel and one rechargeable battery Approximate battery operating time 7 months from full charge to Level 3 under the following conditions H...

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