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Operation Guide 5266
E-48
Illumination Precautions
• Illumination may be hard to see when viewed under direct sunlight.
• Illumination turns off automatically whenever an alarm sounds.
• Illumination will not turn on while an alarm is sounding, while high-speed hand movement is in
progress, while a sensor is taking a reading, or while the watch is performing calculation (
CALC
displayed). Illumination will turn on if
L
is pressed between sensor reading operations.
• Frequent use of illumination runs down the battery.
E-49
Button Operation Tone
The button operation tone sounds any time you press one of the watch’s buttons. You can turn the
button operation tone on or off as desired.
• Even if you turn off the button operation tone, the alarm, Hourly Time Signal, and Countdown
Timer Mode alarm all operate normally.
• Prayer alarm will sound even if the button operation tone is turned off (
MUTE
).
To turn the button operation tone on and off
1. In the Timekeeping Mode, hold down
A
for at least two seconds
until
ADJUST
appears on the digital display. This is the setting
mode. Release
A
after
ADJUST
appears.
• The name of the city currently selected as your Home City will
appear on the digital display with an arrow (
▲
) fl ashing to the
left.
2. Use
C
to cycle through settings on the digital display until the
current button operation tone setting (
MUTE
or
KEY
) is displayed.
• See step 3 under “To change the current time and date settings”
(page E-15) for information about how to scroll through setting
screens.
3. Press
D
to toggle the button operation tone between on (
KEY
)
and off (
MUTE
).
4. When the setting is the way you want, press
A
twice to return to the
Timekeeping Mode.
E-50
Troubleshooting
Time Setting
■
Why is the current time setting off by a couple of hours?
Your Home City setting may be wrong (page E-12). Check your Home City setting and correct it, if
necessary.
■
Why is the current time setting off by one hour?
You may need to change your Home City’s standard time/daylight saving time (DST) setting. Use
the procedure under “To change the current time and date settings” (page E-15) to change the
standard time/daylight saving time (DST) setting.
Sensor modes
■
Why can’t I change the temperature unit setting?
The temperature unit setting is always Celsius (
°C
) whenever
TOKYO
is selected as the Home
City. In this case, the setting cannot be changed.
■
Why does “ERR” appear while a sensor operation is in progress?
Subjecting the watch to strong impact can cause sensor malfunction or improper contact of internal
circuitry. When this happens,
ERR
(error) will appear on the digital display and sensor operations
will be disabled.
Qibla Readings and
Temperature Measurement
E-51
• If
ERR
appears while a measurement operation is being performed in a sensor mode, restart the
measurement. If
ERR
appears on the digital display again, it can mean there is something
wrong with the sensor.
• If
ERR
keeps appearing during measurement, it could mean there is a problem with the
applicable sensor.
■
Why does “ERR” appear on the digital display following bidirectional calibration?
If
- - -
appears and then changes to
ERR
(error) on the calibration screen, it means that there is
something wrong with the sensor.
• If
ERR
disappears after about one second, try performing the calibration again.
• If
ERR
keeps appearing, contact your original dealer or nearest authorized CASIO distributor to
have the watch checked.
Whenever you have a sensor malfunction, take the watch to your original dealer or nearest
authorized CASIO distributor as soon as possible.
■
What causes incorrect direction readings?
• Incorrect bidirectional calibration. Perform bidirectional calibration (page E-24).
• Nearby source of strong magnetism, such as a household appliance, a large steel bridge, a
steel beam, overhead wires, etc., or an attempt to perform direction measurement on a train,
boat, etc. Move away from large metal objects and try again.
■
What causes different direction readings to produce different results at the same
location?
Magnetism generated by nearby high-tension wires is interfering with detection of terrestrial
magnetism. Move away from the high-tension wires and try again.
E-52
■
Why am I having problems taking direction readings indoors?
A TV, personal computer, speakers, or some other object is interfering with terrestrial magnetism
readings. Move away from the object causing the interference or take the direction reading
outdoors. Indoor direction readings are particularly diffi cult inside ferro-concrete structures.
Remember that you will not be able to take direction readings inside of trains, airplanes, etc.
Battery
■
Why is the low battery alert fl ashing?
Battery power is low. Watch operations are disabled while the low
battery alert is fl ashing on the digital display.
If the low battery alert disappears after battery power recovers but then
starts to fl ash again after a short while, it means that you need to have
the watch’s battery replaced.
Low battery alert
E-53
Specifi cations
Accuracy at normal temperature:
±30 seconds a month
Digital Timekeeping:
Hour, minutes, seconds, a.m. (A)/p.m. (P), month, day, day of the week, Hijri
month, Hijri day
Time format: 12-hour and 24-hour
Gregorian calendar system: Full Auto-calendar pre-programmed from the year 2000 to 2099
Hijri calendar: Based on the range of the Gregorian calendar; auto correction at end of each
month
Other: City data (70 cities + user setting based on time differential); screen switching
(Gregorian or Hijri date, regular timekeeping); year/month/day display format
Analog Timekeeping:
Hour, minutes (hand moves every 10 seconds), seconds
Qibla:
Second hand indication of Qibla; 20 seconds continuous readings; Calibration (bidirectional);
Magnetic declination correction; Magnetic north indication; display of one of 16 direction
indicators; Angle value 0° to 359°
Prayer Times:
Gregorian 2000 through 2099; FAJR, SUNRISE, ZUHR, ASR, MAGHRIB, ISHA (six
time displays per day); prayer alarm; prayer elapsed time measurement (up to 30
minutes); prayer calculation method setting; display of next prayer time
Moon Age:
Display of Moon age values at sunset for dates from Gregorian 2000 to 2099
Thermometer:
Measurement and display range: –10.0 to 60.0°C (or 14.0 to 140.0°F)
Display unit: 0.1°C (or 0.2°F)
Reading timing: 5-second intervals for 1 to 2 minutes
Bearing Sensor Precision:
Direction: Within ±15°
Values are guaranteed for a temperature range of –10°C to 40°C (14°F to 104°F).
Temperature Sensor Precision:
±2°C (±3.6°F) in range of –10°C to 60°C (14.0°F to 140.0°F)