Casio 5086 User manual

5SERS'UIDE
MA1108-EB

1
Thank you for purchasing this CASIO watch. To ensure that it can
provide you with the years of service for which it is designed, be sure
to read this manual carefully and follow the instructions contained
herein.
Pay particular attention to the Safety Precautions on the following
pages. Be sure the read the Safety Precautions before trying to use
this watch.
Be sure to keep all user documentation handy for future reference.
Note that the watch illustrations in this manual are intended for••
reference only, and so the actual watch may appear somewhat
different than depicted by an illustration.
Features
lSolar charging
lRadio-controlled atomic timekeeping
lStopwatch
lCountdown Timer
lWorld Time
lAlarm
lAuto hand home position correction
Be sure to charge the watch sufficiently before using it!
Your watch runs on electrical power generated from light, which
is stored by a rechargeable battery.
To ensure stable operation, make sure that the watch is exposed
to light as much as possible as described in this manual.
See “Solar Charging” for more information about required
charging times.

2
Safety Precautions
Symbols
This manual and the watch itself use various symbols that are
intended to ensure safe operation of the watch, to prevent injury to
you and others, and to protect against material damage and loss.
The following explains the meanings of the symbols.
Example Symbols
The symbol indicates something you need to
exercise caution about. The symbol to the left indicates
an electric shock precaution.
The symbol indicates something you must not do.
The symbol to the left indicates that you should not try
to disassemble something.
The symbol indicates something you must do. The
symbol to the left indicates that you must unplug the
power cord from the power outlet.

3
Danger!
Disregarding information with this label
creates the risk of death or serious personal
injury.
Warning!
Disregarding information with this label
could possibly create the risk of death or
serious personal injury.
Caution!
Disregarding information with this label
could possibly create the risk of personal
injury or material loss.

4
Warning!
Do not use this watch while scuba
diving (aqualung).
This watch is not a diving watch.••
Improper use of this watch can lead to
serious accident.
Battery
Whenever removing the button type battery, take care to ensure
that the battery is not swallowed accidentally.
Special care is required where young children are present.
Keep batteries out of the reach of small children. Should a battery
ever be swallowed accidentally, contact a physician immediately.

5
Caution!
User Maintenance
A dirty or rusty case or band can soil the sleeve of your clothing.
Be sure to keep the case and band clean at all times. Rust tends
to form easily after the watch is exposed to seawater and then left
without cleaning.

6
Caution!
Skin Irritation
Since the watch and the band come into direct contact with the
skin, the following conditions may cause irritation of the skin.
1. When a wearer is allergic to metal or leather
2. When the watch or band is rusty dirty, sweaty, etc.
3. When the wearer is in poor physical condition
Tightening the band too tightly can cause you to sweat and••
make it difficult for air to pass under the band, which can lead to
skin irritation. Do not over-tighten the band.
The bacterial and odor resistant band suppresses the formation••
of organisms and bacteria due to sweat, and related odors. It
does not protect against skin rash.
Should you ever notice any abnormality, immediately stop using••
the watch and consult a physician.

7
Caution!
Never try to take the watch apart!
Never try to take the watch apart. Doing so creates
the risk of personal injury and malfunction of the watch.

8
Caution!
Use of the Watch
To avoid unexpected accidents, always check around you to
ensure you are in a safe place before looking at the display of the
watch. Looking at the watch while running or jogging on the open
road, while riding a bicycle, or operating a motor vehicle can lead
to accidents. Take care to avoid running into others.
Take care to avoid breaking your fingernails when fastening and
unfastening the band. Particular care is required by people with
long fingernails.
To avoid unexpected injury or skin irritation due to allergic reaction,
do not wear the watch while sleeping.

9
Caution!
Use of the Watch
When picking up or otherwise coming into contact with a child,
remove the watch from your wrist to avoid injury to the child or
causing irritation of the child’s skin.

10
Before using the watch...
Expose the watch to light.
Your watch runs on electrical power generated from light, which is
stored by a rechargeable battery. Long-term storage of the watch
can cause power to run low, so be sure to expose the watch to light
before using it for the first time. See page 18 for more information.
Low Battery Alert
When battery power is low, the second hand of the watch will jump
at 2-second intervals in the Timekeeping Mode to let you know that
charging is required. See page 20 for more information.


*UMPSEVERYTWOSECONDS
Power Saving
Power Saving causes the watch to enter a sleep state automatically,
which stops movement of the analog hands in order to save power
whenever the watch is left in the dark.
The watch will exit the sleep state if you expose it to light or perform
any button operation.

11
Though the hands are stopped, the watch continues to keep time
internally.
Note that the watch also may enter the sleep state if its face is
blocked from light by your sleeve.
The watch does not enter the sleep state if it is in the Stopwatch
Mode or Countdown Timer Mode.
How the sleep state works
Sleep Level 1
Sleep Level 1 is triggered whenever the watch is left in the dark for
about one hour any time between the hours of 10 p.m. and 6 a.m. At
this time, watch functions will operate as described below.
The second hand will stop at its current position.
The hour hand, 24-hour time hands, minute hand, and date
indicator will continue to operate normally.
Auto Receive is performed normally.
Alarms and the hourly time signal will continue to operate normally.
At this time, watch functions will operate as described below.
Sleep Level 2
Sleep Level 2 is triggered whenever the watch is left in the dark while
in Sleep Level 1 for six or seven days.
The hour hand, 24-hour time hand, minute hand, and World Time
will stop at their current positions.
World Time timekeeping will stop at the point the current time in
the Timekeeping Mode reached 0:00.
Auto Receive will be disabled.
Alarms and the hourly time signal will be disabled.
Date display will continue to operate normally.

12
Contents
Safety Precautions ...............................................2
Symbols ........................................................................2
Example Symbols ........................................................2
Before using the watch......................................10
Expose the watch to light..........................................10
Power Saving .............................................................10
Modes and Indicators ........................................16
Solar Charging....................................................18
How a Radio-controlled Watch Works...............24
What is a radio-controlled watch?............................24
Calibration Signal.......................................................25
Reception Ranges......................................................27
Reception Time...........................................................30
Positioning the Watch for Best Reception ...............30
Receiving a Calibration Signal..................................31
Auto receive................................................................32
Using Manual Receive ...............................................34
To cancel a manual receive operation............................... 36
To check the result of the last receive operation ............. 37

13
Calibration Signal Reception Precautions ..............38
Troubleshooting ........................................................39
Stopwatch ...........................................................42
To start or stop an elapsed time operation....................... 42
To measure elapsed time.................................................... 44
To measure split times........................................................ 44
Countdown Timer ...............................................46
To set the countdown timer start time .............................. 47
To use the countdown timer............................................... 48
To stop the time up alert..................................................... 49
World Time...........................................................50
To search for a city.............................................................. 51
Summer Time..............................................................52
To switch between standard time and
summer time manually ....................................................... 53
Home Time/World Time Swapping ............................54
City Code List .............................................................56
Alarm ...................................................................58
To set the alarm time........................................................... 59
To turn the alarm on or off.................................................. 60
To stop the time up alert..................................................... 60
Configuring Home City Settings .......................62
Configuring Time and Date Settings Manually ....66

14
Auto Hand Home Position Correction ..............73
To trigger the auto hand home position correction
operation manually ............................................................. 74
Manual Home Position Correction ....................75
Specifications .....................................................82
Operating Precautions.......................................84
Battery .................................................................89
User Maintenance ..............................................90

15

16
4IMEKEEPING-ODE
7ORLD4IME-ODE !LARM-ODE
3TOPWATCH-ODE
#OUNTDOWN4IMER-ODE
BUTTON
BUTTON


BUTTON
BUTTON

 
 
3ECONDHAND
"OTTOMDIALHAND#URRENTHOURINHOURFORMAT
$AY
,EFTDIALHAND
$AYOFTHE
WEEKMODE
#URRENTTIME
)NDICATESHOURAND
MINUTEINALLMODES 2IGHTDIALHANDS
7ORLD4IME
3TOPWATCHTIMEHOURS
ANDMINUTES
!FTERINDICATING34
INDICATESSECONDS
FORSTOPWATCHTIMING )NDICATES42
#OUNTDOWN4IMERHOURS
ANDMINUTES
0
0
00
#ITYCODE
)NDICATES34$OR$34
7ORLD4IME
)NDICATES!,
!LARMTIME
Modes and Indicators
Each press of Ccycles through modes in the sequence shown
below.
Stopping at a mode for about one second will cause the display to••
change to the data for that mode.
Operating a button while the hands are moving at high speed may••
cause the hands to stop temporarily.
A••button
Press once to view the last receive result (page 37).••
Any time except while the watch is performing auto hand home••
position correction, holding down Cfor about two seconds will
return directly to the Timekeeping Mode.
See page 24 for more information.••

17
4IMEKEEPING-ODE
7ORLD4IME-ODE !LARM-ODE
3TOPWATCH-ODE #OUNTDOWN4IMER-ODE
BUTTON
BUTTON


BUTTON
BUTTON

 
 
3ECONDHAND
"OTTOMDIALHAND#URRENTHOURINHOURFORMAT
$AY
,EFTDIALHAND
$AYOFTHE
WEEKMODE
#URRENTTIME
)NDICATESHOURAND
MINUTEINALLMODES 2IGHTDIALHANDS
7ORLD4IME
3TOPWATCHTIMEHOURS
ANDMINUTES
!FTERINDICATING34
INDICATESSECONDS
FORSTOPWATCHTIMING )NDICATES42
#OUNTDOWN4IMERHOURS
ANDMINUTES
0
0
00
#ITYCODE
)NDICATES34$OR$34
7ORLD4IME
)NDICATES!,
!LARMTIME
Modes and Indicators The shape and markings of the face depend on the watch••
model.

18
Solar Charging
Your watch runs on electrical power generated from light, which is
stored by a rechargeable battery.
To ensure stable operation, make sure that the watch is exposed to
light as much as possible.
Whenever you are not wearing the watch on your wrist, position••
it so the face (solar cell) is pointed in the direction of a source of
bright light. Leave the watch under fluorescent lighting, near a
window, etc.
,IGHT
3OLARCELL
The solar cell is located in the watch’s face. When wearing the••
watch, try to keep your clothing from blocking its face. Charging
efficiency is reduced significantly even if the face of the watch is
covered only partially by your sleeve.

19
How the solar cell and battery work
While the watch is exposed to light...

,IGHT
0OWERSUPPLIEDTOWATCH
3OLARCELL
#ONVERTSLIGHTTOPOWER
%LECTRICALENERGY
#HARGE
2ECHARGEABLE
BATTERY
While the watch is not exposed to light...

0OWERSUPPLIEDTOWATCH
$ISCHARGE
2ECHARGEABLE
BATTERY
Your watch continues to operate even when it is not exposed to light.
Leaving the watch in the dark can run down its battery and cause
functions to become disabled.