Casio QW-2609, QW-2637, QW-2639, GW-300J, MTG-900D Service Manual & Parts List
...
SERVICE MANUAL
& PARTS LIST
REF. NO. S/M-803
MAR. 2003
MODULE NO.
QW-2609/2637/2638/2639
GW-300J MTG-900D MTG-900DA MTG-900DJ
Ver.2 : Nov. 2003
Ver.1 : Jun. 2003
R
(WITHOUT PRICE)
CONTENTS
Page
1. SPECIFICATIONS: MODULE QW-2609/2637/2638/2639 ......................... 1
2. OPERATION CHART: MODULE QW-2609/2637/2638/2639 .................... 2
3. DRAWINGS: MODULE QW-2609/2637/2638/2639
3-1. LCD DIAGRAM ............................................................................................14
3-2. CIRCUIT DIAGRAM .....................................................................................16
3-3. CHECKING TERMINALS AND COMPONENTS .........................................19
4. EXPLODED VIEW: MODULE QW-2609/2637/2638/2639 ........................ 20
5. PARTS LIST: MODULE QW-2609/2637/2638/2639 ................................. 21
6. PRECAUTIONS FOR REPAIR: MODULE QW-2609/2637/2638/2639
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE .....................................25
6-2. ACCURACY CHECKING .............................................................................25
6-3. SOLAR CELL-PCB ASS'Y CONTACT CHECKING....................................26
7. TROUBLESHOOTING: MODULE QW-2609/2637/2638/2639.................. 27
1.
SPECIFICATIONS: MODULE QW-2609/2637/2638/2639
Item Detail
Battery CTL1616 (Storage battery)
Note: Use CTL1616 only. Other storage battery or CR1616 can cause
damage to the watch.
Battery life Approx. 6 month (from full charged condition)
Current consumption 1.135 µA maximum
Alarm system Piezo plate on Cover/Back
Accuracy ±15 sec./month
Accuracy setting system Trimmer capacitor
Accuracy checking See page 26
Functions
Accuracy at normal
temperature: ±15 seconds a month (with no signal calibration)
Timekeeping: Hour, minutes, seconds, a.m. (A)/p.m. (P), month, day,
day of the week Time system: Switchable between 12hour and 24-hour format
Calendar system: Full Auto-calendar pre-programmed from the year 2000
to 2099
Other: Home city cord (can be assigned one of 34 city cords);
Daylight Saving Time/Standard time
Time Calibration
Signal Receotion:
Receivable Time
QW-2609/2639: Receivable Time Calibration Signals Fort Collins,
QW-2637: Receivable Time Calibration Signals
QW-2638: Receivable Time Calibration Signals
World Time: 30 cities (29 time zones)
Other: Standard time/Daylight Saving Time, Home time (hour,
Time Recorder: Memory for 30 records, each containing hour, minutes,
Alarms:
Stopwatch
Measuring unit: 1/100 second
Measuring capacity: 23:59' 59.99"
Measuring modes: Elapsed time, split time, two finishes
Other: Backlight (electro-luminescent panel); Auto Light Switch
Battery: One rechargeable battery (type: CTL1616)
Approximate Battery life:
Auto Receive (four times per day, at 2:00 AM, 3:00 AM, 4:00
AM, and 5:00 AM); Manual Receive; Last Signal screen
Colorado (Call Sign: WWVB, Frequency: 60kHz)
Fukushima, Japan (Call Sign: JJY, Frequency: 40kHz)
Fukuoka/Saga, Japan(Call Sign: JJY, Frequency: 60kHz)
Mainflingen, Germany (Call Sign: DCF77, Frequency: 77.5kHz)
Fort Collins, Colorado (Call Sign: WWVB, Frequency: 60kHz)
minutes, a.m. (A)/p.m. (P), and Standard time/Daylight
Saving Time)
seconds, a.m. (A)/p.m. (P), and Standard time/Daylight
Saving Time
Four one-time alarms; one snooze alarm; Hourly Time Signal
(Full Auto EL light operates only in the dark);
Battery power indicator; Power Saving function
Use only the type of battery specified by CASIO. Never
use a different battery type. The wrong type of battery
can damage the watch.
6 months (from full charge to Level 3 when the watch is
not exposed to light) under the following conditions:
•
Display on 18 hours per day, sleep state 6 hours per day
• 1 backlight operation (1.5 seconds) per day
• 10 seconds of alarm operation per day
• 4 times calibration reception per day
— 1 —
Reception Range
This watch is designed to receive the standard time calibration signal of Japan (JJY) or of the United States (WWVB). The signal that is
received depends on the current Home City setting.
When this Home City is selected:
You can receive this signal
Either the Mt. Otakadoya signal (40kHz) or the Mt. Hagane signal (60kHz)
TYO
LAX, DEN, CHI, NYC
Fort Collins, Colorado signal
1000km
Mt. Hagane
(60kHz)
Mt. Otakadoya
(40kHz)
500km
1000km
500km
Transmitter Locations
• Under optimum conditions, the calibration signal should be
receivable up to 1,000 kilometers from the transmitter. Note
that the wave is relatively weak at distances greater than
500km, so reception may be poor at long distances.
Fort Collins
3000km
1000km
Transmitter Location
• Under optimum conditions, the calibration signal should be
receivable up to 3,000 kilometers from the transmitter. Note
that the wave is relatively weak at distances greater than
1,000km, so reception may be poor at long distances.
What is a radio-controlled watch?
Your radio-controlled watch is designed to receive a time
calibration signal that contains standard time data and adjust its
current time setting accordingly.
Time Calibration Signal
The time calibration signal is the same one used by TV and radio
stations to keep accurate time and sound their time signals. The
standard time data of the time calibration signal is controlled by
cesium beam atomic clock.
Time data
After the watch receives the Japan Standard Time signal, it
performs internal calculations to determine the current time.
Because of this, there may be an error of up to one second in
the displayed time.
Calibration Signal
• The Japanese calibration signal (Call Sign: JJY) is maintained by
the independent Japan Ministry of Posts and Telecommunications
Communication Research Laboratory (CRL). It is a long wave
signal transmitted 24 hours a day from the Mt. Otakadoya
transmitter (40kHz) located in Tamura-gun, Fukushima Prefecture,
and from the Mt. Hagane transmitter (60kHz) located on the
border between Saga Prefecture and Fukuoka Prefecture.
• The U.S. calibration signal (Call Sign: WWVB) is transmitted by
the National Institute of Standards and technology from Fort
Collins, Colorado.
Though the calibration signal is normally transmitted 24 hours
a day, transmission may be interrupted occasionally due to
maintenance, lightening, etc.
Signal data
Transmitter
Long-wave time
calibration signal
Inside the watch
Decoding
Watch
Time data
Signal received using
built-in antenna.
Watch decodes
received data
and converts it
to time data.
Time is
adjusted
according to
time data.
Cesium
atomic clock
How a Radio-controlled Watch Works
Time Required for Reception
Signal reception takes anywhere from about two to six minutes.
• Note that when “AUTO” is specified as the frequency selection
mode, signal reception can take up to 12 minutes.
* See “Specifying the Transmitter Selection Mode in Japan” for
more information.
Triggering Reception Manually
In the Timekeeping Mode:
Hold down the D button for
about two seconds.
• The watch beeps and reception
starts. Ongoing reception is
indicated by the
icon and the
receive indicator. See “Receive
Icon and Indicator” for more
information.
To interrupt reception
Press the
D
button.
• All other buttons besides D are disabled during signal reception.
When reception is successful
The watch terminates reception and adjusts the current time. Next
it beeps and then displays the date and time the adjustment was
performed.
• The
icon and the receive indicator remain on the display to
indicate that reception was successful. The
icon is cleared
from the display each day at 3:00 a.m.
When reception fails
The watch does not adjust its current time setting, and displays
“ERR” instead.
• The display also return to the normal timekeeping screen
automatically if you do not perform any operation for about one
or two minutes.
Receive Icon and Indicator
While reception is in progress, the
icon and the receive indicator
cycle from “Unstable” through
“Stable” as shown below. How far
they cycle depends on the signal
strength. Keep the watch in a
location where reception is stable
while reception is in progress.
Unstable Stable
Module 2609
Unstable Stable
Module 2639
• Even under optimum reception conditions, it takes at least
10 seconds before reception starts.
• Use the receive icon and receive indicator to check
reception status and to determine the best location for
signal reception.
• Note that weather, the time of day, surroundings, and other
factors can all affect reception.
Location
Reception is difficult and may even be impossible in the locations
described below. Avoid such locations when performing signal
reception.
• You should think of your watch operating like a radio or TV when it
is receiving the calibration signal.
If you are experiencing problems with reception, move away
from the types of locations described above to a location with
better reception, and try again.
Receiving the Calibration Signal
There are two methods you can use to receive the time calibration
signal.
• Auto reception (Reception is performed automatically at 2:00,
3:00, 4:00, and 5:00 each morning.)
• Manual reception (You initiate reception using a button
operation.)
• The watch is set up for auto reception at the factory, so all you
need to do is to place it in a location that allows good reception
each night.
Setting Up to Make Reception Easier
Remove the watch from your wrist and place it somewhere so its
top (12 o’clock side, where the antenna is located) is facing
approximately in the direction of the signal transmitter. Keep the
watch away from metal objects.
Resin band
Metal band
• Orienting the watch so it is sideways to the transmitter makes it
more difficult to receive the signal.
• Do not move the watch while it is receiving the calibration signal.
Near high-voltage lines
Among or near buildings
Next to a household
appliance or office equipment
(TV, speaker, fax, PC, etc.)
Inside a vehicle
(automobile, train, plane, etc.)
Near mountains
In a location where there is
radio interference
(construction site, airport, etc.)
Receive indicator
Receive icon
• Geographic contours, nearby buildings, the season, and the time of day can make reception impossible even when you are within range of
the transmitter.
• Best reception is possible late at night.
쮿
쮿
쮿
2. OPERATION CHART
2-1. MODULE QW-2609/2639
— 2 —
AUTO
With this setting, the watch automatically selects either the
Otakadoya Mountain signal (40kHz) or the Hagane Mountain
signal (60kHz), whichever is strongest.
* The frequency first used by the watch is the one that was
last successful.
40
With this setting, the watch always receives the Otakadoya
Mountain signal (40kHz).
60
With this setting, the watch always receives the Hagane
Mountain signal (60kHz).
T urning Auto Reception On and Off
1.
Display the setting screen.
Hold down the A button
for two seconds.
2.
Display the transmitter selection mode setting screen.
Press the C button three
times.
3.
Turn auto reception on or off.
Press the D button to
toggle auto reception ON
and OFF.
4.
Exit the setting screen.
Press the A button twice.
• This exits the setting screen and returns to the normal
timekeeping screen.
• The display also will return to the normal timekeeping screen
automatically if you do not perform any operation for about
two or three minutes.
Viewing the Last Reception Date and Time
In the Timekeeping Mode:
Press the D button.
• This displays the date and time
that signal reception was
complete and the current time
and date were adjusted.
• To return to the timekeeping
screen, press the D button
again.
• The display also returns to the
normal timekeeping screen
automatically if you do not
perform any operation for about
one or two minutes.
Important!
• The calibration signals received by this watch include two data
groups: an hour-minute-second group and a year-month-day group.
• Both the hour-minute-second
group and year-month-day group
were not received. It will not
remain on the display if only the
hour-minute-second group is
received.
Specifying the Transmitter
Selection Mode in Japan
When Tokyo (TYO) is selected as the Home City, you can select
either of two different transmitters for reception.
1.
Display the setting screen.
Hold down the A button
for two seconds.
2.
Select the transmitter selection mode you want.
Press the D button.
3.
Exit the setting screen.
Press the A button twice.
• This exits the setting screen and returns to the normal
timekeeping screen.
• The display also will return to the normal timekeeping screen
automatically if you do not perform any operation for about
two or three minutes.
Time setting is incorrect following signal reception.
Possible Cause: • Summer time is turned on or the wrong
Home City is selected.
Corrective Measures: • Turn off summer time so the DST
indicator is not on the display.
• Configure the watch for the correct DST
setting and Home City setting.
• If you cannot receive the calibration signal or if the current time
setting is incorrect after signal reception, check the current setup
of the watch. The following are the watch's factory default
settings, which are configured automatically whenever you have
the battery of the watch replaced.
Auto Receipt
Transmitter
Home City
Summer Time
On
Auto Japan transmitter select
(40kHz/ 60kHz)
To
kyo
Auto switching in accordance
with signal data
Troubleshooting
Cannot perform manual reception.
Possible Cause: • The watch is not in the Timekeeping Mode
or World Time Mode.
• The Home City is set to a city other than
TYO (Tokyo), NYC (New York), CHI
(Chicago), DEN (Denver), or LAX (Los
Angeles).
Corrective Measures: • Perform manual reception while a time
screen is on the display in the Timekeeping
Mode or World Time Mode only.
• Change Home City To TYO (Tokyo), NYC
(New York), CHI (Chicago), DEN
(Denver), or LAX (Los Angeles).
The
icon is not displayed even though auto reception is
turned on.
Possible Cause: • A single receive operation was not
successful.
• Both the hour-minute-second group and
year-month-day group were not received.
• The watch is not in the Timekeeping Mode
or World Time Mode when an auto
reception time is reached.
• You performed manual reception, which
clears the
icon from the display.
Corrective Measures: • Check to make sure the watch is in a
location where it can receive the signal.
• Place the watch in a location where
reception conditions are good.
• Make sure that the watch is in the
Timekeeping Mode or World Time Mode
during the auto reception times.
• The
icon disappears from the display
whenever you change the current time
setting manually.
Calibration Signal Reception
Precautions
• Auto reception can be performed while the watch is in the
Timekeeping Mode or World Time Mode only.
• Operating any button while auto reception is in progress will
cause the watch to beep and then exit the receive operation.
• Make sure you are within the range of the calibration signal
transmitter before performing the receive operation. Remember
that geographic contours, nearby buildings, the season, and the
time of day can make reception impossible even when you are
within range of the transmitter.
• Proper reception may be impossible if there is something blocking
the signal. If reception is unsuccessful, try again.
• This watch is designed to adjust its current time setting in
accordance with the calibration signals transmitted in Japan and
the United States only. Note that you will need to make your own
adjustments when using this watch outside of Japan or the United
States, or in any area that is outside the range of one of the
receivable time calibration signal transmitters.
• When the watch is unable to adjust its time signal using the
calibration signal for some reason, timekeeping accuracy is within
±15 seconds per month.
• Strong electrostatic charge can cause timekeeping error.
• Signal reception is cancelled if an alarm starts to sound while it is
being performed.
• The watch's calendar shows dates up to the year 2099.
Attempting a receive operation after that causes an error.
• If only the hour-minute-second group is received, the Timekeeping
Mode date at the time of reception is recorded as the last
reception date.
displayed
not displayed
Hour-minute-second group and year-
month-day group received
Hour-minute-second group only received
Not displayed
— 3 —
2-2. MODULE QW-2637
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to carefully read this manual and keep it on hand for later reference
when necessary.
Expose the watch to bright light to charge its battery before using it.
You can use this watch even as its battery is being charged by exposure to bright
light.
• Be sure to read “Battery” of this manual for important
information you need to know when exposing the watch to bright light.
If the display of the watch is blank...
Sleep indicator
If the sleep indicator (S ) is on the display, the display is
blank because the watch’s Power Saving function has
shut it to conserve power. Power Saving automatically
turns off the display and puts the watch into a sleep state
whenever your watch is left in an area where it is dark for
a certain period.
• The initial factory default setting is Power Saving on.
• The watch recovers from the sleep state if you move it to
a well-lit area
the watch towards your face for reading.
It can take up to two seconds for the display to turn on.
*
• See “Power Saving Function” for more information.
, if you press any button, or if you angle
*
General Guide
• Press C to change from mode to mode.
• In any mode, press L to illuminate the display.
World Time Mode
Timekeeping Mode
Press C
.
▲
▲
Timekeeping
Use the Timekeeping Mode to set and view the current time and date.
• The watch is equipped with a Time Recorder feature that lets you record the current
Home City time (month, day, hour, minutes, seconds, and DST on/off setting) with
the touch of a button. See “To record a Time Recorder time” for more information.
• Pressing displays the Last Signal screen (date and time that the time calibration
D
signal was last received) in the Timekeeping Mode.
PM
indicator
Day of week
Press .
▲
Month – Day
Hour : Minutes Seconds
Current Time Setting
This watch automatically adjusts its time setting in accordance with a time calibration
signal. You can also perform a manual procedure to set the time and date, when
necessary.
• Before using the watch in Western Europe, first use the procedure under “Setting Up
the Watch for Use in Western Europe” to set the time in accordance with a time
calibration signal.
• Note that after you set your Home City (the city where you normally use the watch)
code, you must also turn on the watch’s time calibration signal receiver if you want to
enable auto time calibration. See “About Auto Receive” for more information.
• See “Setting the Time and Date Manually” for information about manual settings.
Setting Up the Watch for Use in Western Europe
You need to make the following three settings before using this watch in Western
Europe. The following provides a general overview of the setting procedure. For full
details, see “Setting the Time and Date Manually” and “Time Calibration Signal
Reception.”
• Specify the city code for your Home City (the city where you will normally use the
watch).
• Select the auto summer time (DST) setting.
• Perform the manual time calibration signal receive operation to set the current time.
To set up the watch for use in Western Europe
1. In the Timekeeping Mode, hold down A until the city
City code
code starts to flash, which indicates the setting screen.
2. Use (+) and BD
use as your Home City .
• The following are the city codes for major cities in the
Western Europe time zones.
BER and PAR: Berlin, Paris, Milan, Rome,
LON: London
3. Press C to display the summer time (DST) setting
screen.
4. Use to select AUTO (auto DST).
D
• Auto DST specifies auto switching between Daylight
Saving Time and Standard Time.
5. Press A twice to exit the setting screen.
Receive time
D
▲
Receive date
Last Signal Screen
(–) to select the city code you want to
Amsterdam, Hamburg,
Frankfurt, Vienna
About This Manual
(Light)
Module 2607
(Light)
Module 2637
• The operational procedures for Modules 2607 and 2637
are identical. All of the illustrations in this manual show
Module 2607.
• Button operations are indicated using the letters shown
in the illustration.
• Each section of this manual provides you with the
information you need to perform operations in each
mode. Further details and technical information can be
found in the “Reference” section.
Time Recorder Mode
▲
Stopwatch Mode
▲
Alarm Mode
▲
6. Hold down for about two seconds until the watch
• Release and the message RC! appears to indicate
• Time calibration signal reception takes from two to six
Module 2607
Receiving indicator
Module 2637
• Position the watch as shown in the nearby illustration, and place it near a window in
a location where there are no nearby metal objects.
Resin
Band
• See the information under “Time Calibration Signal Reception” if you experience
problems with time calibration signal reception.
• After signal reception is complete, the display of the watch changes to the Last
Signal screen.
Time Calibration Signal Reception
This watch is designed to pick up a time calibration signal and update its time setting
in accordance with the signal. There are two different methods you can use to receive
the signal: Auto Receive and Manual Receive. With Auto Receive, the watch
automatically receives the calibration signal four times each day and makes
appropriate adjustments. With Manual Receive, you perform a specific button
operation to receive the calibration signal.
Frankfurt
• This watch is able to receive the time calibration signal
• Signal reception may be poor in the shaded area on the
D
beeps.
D
that signal reception has started.
minutes. Take care that you do not move the watch
during this time.
Metal Band
transmitted from Mainflingen, Germany (located 25
kilometers southeast of Frankfurt). Signal reception is
possible within the area represented by a circle with a
radius of about 1000 kilometers.
At distances further than about 500 kilometers, the
signal may become weak and reception may be
impossible under certain conditions.
map, even though it is within 1,000 kilometers of the
signal transmitter.
— 4 —
Note
• If you are using the time calibration signal to set the time for this watch, be sure to
correctly set your Home City. Otherwise, there is the chance that the watch will not
set the correct time. See “Setting the Time and Date Manually” for details.
• Note that signal reception is possible only when the watch is within range of a time
calibration signal transmitter, and BER, PAR, LON, or ATH is selected as the Home
City code.
• See “City Code Table” for a complete list of available city codes.
• The current time setting in accordance with the time calibration signal takes priority
over any time settings you make.
• Auto receive is turned on when the watch is shipped from the factory.
• See the information under “Time Calibration Signal Reception” if you experience
problems with time calibration signal reception.
To perform manual time calibration signal reception
Module 2607
Receiving indicator
Module 2637
Note
• To interrupt a receive operation and return to the Timekeeping Mode, press .
• If the receive operation is unsuccessful, the message ERR appears on the display
for about one or two minutes. After that, the watch returns to the Timekeeping Mode.
• You can also change from the Last Signal or ERR screen to the normal timekeeping
screen by pressing .
About the Receiving Indicator
The receiving indicator shows the strength of the calibration signal being received. For
best reception, be sure to keep the watch in a location where signal strength is strongest.
1.Place the watch on a stable surface so its top (12
o'clock side) is facing towards a window.
• Note that signal reception is poor if the watch is on its
back or side.
2.In the Timekeeping Mode, hold down for about two
seconds until the watch beeps.
• Release and the message RC! appears to indicate
D
that signal reception has started.
• Time calibration signal reception takes from two to six
minutes. Take care that you do not move the watch
during this time.
• After signal reception is complete, the display of the
watch changes to the Last Signal screen.
• The receiving indicator (Level 4) indicates that the time
calibration reception attempt was successful.
D
D
D
[Module 2607]
[Module 2637]
Weak
(Level 1) (Level 4)
• Even in an area where signal strength is strong, it takes about 10 seconds for signal
reception to stabilize enough for the receiving indicator to indicate signal strength.
• Use the receiving indicator as a guide for checking signal strength and for finding the
best location for the watch during signal receive operations.
• The receiving indicator (Level 4) remains on the display in all modes following
reception of the time calibration signal and calibration of the watch’s time setting.
The receiving indicator (Level 4) is not displayed if signal reception was
unsuccessful or after manual adjustment of the current time setting.
About Auto Receive
When auto receive is turned on, the watch automatically starts to receive the time
calibration signal when the time in the Timekeeping Mode reaches 2:00 AM, 3:00 AM,
4:00 AM, and 5:00 AM each day (calibration times).
Note
• The auto receive operation is performed only if the watch is in the Timekeeping or
World Time Mode when one of the calibration times is reached.
It is not performed if a calibration time is reached while you are making settings
(while settings are flashing on the display) or while an alarm is sounding.
• Auto receipt of the calibration signal is designed to be performed early in the
morning, while you sleep (provided that the Timekeeping Mode time is set correctly).
Before going to bed for the night, remove the watch from your wrist, and put it in a
location where it can easily receive the signal.
• The receiving indicator (Level 4) indicates that either the 2:00 AM, 3:00 AM, 4:00 AM
or 5:00 AM calibration signal reception was successful. Note, however, that the
receiving indicator (Level 4) is cleared from the display at 3:00 AM each day.
• If you do not see the receiving indicator (Level 4) except for the above reason, it
means there was some problem with the calibration reception operation. Either
perform reception manually, or make sure the watch is set up properly to receive the
time calibration signal for the next automatic reception time.
• Though this watch is designed to receive both time data (hour, minutes, seconds)
and date data (year, month, day), certain signal conditions can limit reception to time
data only.
• The receiving indicator (Level 4) is displayed only when the watch is able to
successfully receive both time and date data. It does not appear when only time data
is received.
• Normally, the signal reception date shown by the Last Signal screen is the date data
included in the received time calibration signal. When only time data is received,
however, the Last Signal screen shows date as kept in the Timekeeping Mode at the
time of signal reception.
• When auto receive is turned on, the watch receives the calibration signal for two to
six minutes each day when the Timekeeping Mode time reaches 2:00 AM, 3:00 AM,
4:00 AM, and 5:00 AM. Do not operate any of the watch’s buttons within six minutes
prior to or following the calibration times. Doing so can interfere with correct
calibration.
• Remember that reception of the calibration signal depends on the time kept in the
Timekeeping Mode. The receive operation will be performed whenever the display
shows 2:00 AM, 3:00 AM, 4:00 AM, and 5:00 AM, regardless of whether or not the
Timekeeping Mode time is actually the correct time.
• When two, three, or four receptions are successful, the watch uses the data of the
last reception for calibration. When only one reception is successful, the watch uses
the data of the successful reception.
To turn auto receive on and off
1.In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2. Press C twice to move the flashing to the auto receive
on/off setting.
3.Press D A to toggle auto receive on (
4.Press twice to exit the setting screen.
Strong
ON OFF
) and off (
).
Setting the Time and Date Manually
Make sure you select your Home City code (the city code whose time and date you
are setting) before change the current time and date settings. World Time Mode times
are all displayed in accordance with the Timekeeping Mode settings. Because of this,
World Time Mode times will not be correct if you do not select the proper Home City
code before setting the time and date in the Timekeeping Mode.
To set the current time and date manually
3. When the setting you want to change is flashing, use BD and/or to change it as
described below.
City code
DST
Auto Receive
12/24-Hour format
Hour, Minutes
Seconds
Year
Month, Day
Power Saving on/off
4. Press A to exit the setting screen.
• The auto receive setting is used for time calibration signal reception only. See “About
Auto Receive” for details.
• See “City Code Table” for a complete list of available city codes.
• Resetting the seconds to 00 while the current count is in the range of 30 to 59
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to 00 without changing the minutes.
1.In the Timekeeping Mode, hold down A until the city
code starts to flash, which indicates the setting screen.
2.Press A or C to move the flashing in the sequence
shown below to select other settings.
12/24-Hour
Format
Power Saving
on/off
ScreenSetting
Press C .
/ Press A .
DSTCity Code
Seconds
Day
Auto
Receiv
e
Hour Minutes
Month Year
Button Operations
Use (+) and BD
setting.
Press to toggle between Daylight Saving
D
ON
Time (
• Pressing performs a different
operation when BER, PAR , LON or ATH
is selected as Home City Code. See “Auto
Summer Time (DST) Switching.”
Press to toggle auto receive on and off.
Press to toggle between 12-hour (12H)
D
and 24-hour (24H) timekeeping.
Use (+) and BD
setting.
Press to reset the seconds to 00.
D
Use (+) and B (–) to change the
D
setting.
Press to toggle the Power Saving on
(ON) and off (OFF).
(–) to change the
) and Standard Time (
D
D
(–) to change the
D
OFF
).
World Time
City code
Home city time
Current time in the
selected city code
To view the time in another city code
While in the World Time Mode, press to scroll through the city codes (time zones)
to the east or BD to scroll to the west.
• If the current time shown for a city is wrong, check your Timekeeping Mode time and
Home City settings and make the necessary changes.
To toggle a city code time between Standard Time and Daylight Saving Time
DST indicator
World Time shows the current time in 30 cities (29 time
zones) around the world.
For full information on city codes, see the “City Code
Tabl e.”
The current time for all city codes in the World Time
Mode is calculated in accordance with the Greenwich
Mean Time (GMT) differential for each city, based on the
your Home City time setting.
All of the operations in this section are performed in the
World Time Mode, which you enter b y pressing C .
1.In the World Time Mode, use BD and to display the
city code (time zone) whose Standard Time/Daylight
Saving Time setting you want to change.
2.Hold down A to toggle Daylight Saving Time (DST
displayed) and Standard Time (DST not displayed).
• The DST indicator is on the display whenever you
display a city code for which Daylight Saving Time is
turned on.
• Note that the DST/Standard Time setting affects only the
currently displayed city code. Other city codes are not
affected.
• Daylight Saving Time (DST) advances the time setting
by one hour from Standard Time. Remember that the
not all countries or even local areas use Daylight Saving
Time.
• The watch will perform a signal receive operation even if
it is in the World Time Mode when a calibration time is
reached. If this happens, the World Time Mode time
settings will be adjusted in accordance with the Home
City time.
— 5 —
Time Recorder
The Time Recorder lets you store up to 30 records of the current time (month, day,
hour, minutes, seconds, and DST on/off setting) with the touch of a button. One way
you can use the Time Recorder is to record the start time and the end time of a
particular event.
To record a Time Recorder time
Time record number
Home city time
Recorded time
(Hour : Minutes Seconds)
To recall Time Recorder times
In the Time Recorder Mode, use (+) and BD (–) to scroll through times stored in
memory.
• If you recorded a new Time Recorder time since you last entered the Time Recorder
Mode, the newest record appears first. If you have not recorded a new time, the
record you were viewing when you last exited the Time Recorder Mode appears first.
To delete all Time Recorder times
In the Time Recorder Mode, hold down A to delete all Time Recorder times.
In the Timekeeping Mode, hold down BD to record the
Home City time (month, day, hour, minutes, seconds, and
DST on/off setting).
• The recorded time flashes for about two seconds, and
then it is assigned a record number. After that, the
Timekeeping Mode screen appears.
• Records are assigned numbers sequentially from
through
#30
• Storing a new time record when there are already 30
records stored in memory automatically deletes record
#01
stores the new record as
.
, shifts the remaining records upwards by 1, and
#30
.
#01
Alarms
Alarm number
Home city time
Alarm time (Hour : Minutes)
To set an alarm time
Alarm Operation
The alarm tone sounds at the preset time for 10 seconds, regardless of the mode the
watch is in. In the case of the snooze alarm, the alarm repeats up to seven times
every five minutes until you turn the alarm off.
• Pressing any button stops the alarm tone operation.
• If any alarm operation (one-time alarm, snooze) occurs while a signal receive
operation is in progress, the receive operation is canceled.
• Displaying the Timekeeping Mode setting screen during a 5-minute interval between
snooze alarms stops the current snooze alarm operation (but snooze alarm remains
as the alarm type setting).
• The snooze on indicator (SNZ) flashes during the 5-minute intervals between
alarms.
• The alarm on indicator (
indicator (
• In all modes, the alarm on indicator is shown for any alarm (
• Alarm operations and the Hourly Time Signal operation are performed in all modes.
To test the alarm
• In the Alarm Mode, hold down BD to sound the alarm.
) are displayed in all modes.
SNZ
) that is currently turned on.
To select the alarm operation type
Alarm on indicator
Snooze on indicator
The Alarm Mode gives you a choice of four one-time
alarms and one snooze alarm.
Also use the Alarm Mode to turn the Hourly Time Signal
(
SIG
) on and off.
• There are five alarms numbered
and
SNZ
. You can configure
AL1
only. Alarms
time alarms only.
• Alarm settings (and Hourly Time Signal settings) are
available in the Alarm Mode, which you enter by
pressing CD.
1.In the Alarm Mode, use to scroll through the alarm
screens until the one whose time you want to set is
displayed.
2.After you select an alarm, hold down A until the hour
setting of the alarm time starts to flash, which indicates
the setting screen.
• This operation automatically turns on the alarm.
3.Use C to move the flashing in the sequence shown
below to select other settings.
4.While a setting is flashing, use (+) and B (–) to
change it.
5.Press CD to exit the setting screen.
• When setting the alarm time using the 12-hour format,
take care to set the time correctly as a.m. (A indicator)
or p.m. (P indicator).
through
AL1 AL2 AL3
AL1
through
SNZ
as a snooze alarm
AL4
can be used as one-
MinutesHour
AL4
AL4SIG SNZ
), snooze on indicator (SNZ), and Hourly Time Signal on
AL1
through
AL4
1.In the Alarm Mode, use to select the screen for the
AL1
through
AL4
, or
SNZ
Alarm/
Snooze on
) whose alarm
alarm (
type you want to select.
2.Press A to cycle through the available settings in the
sequence shown below.
Alarm/
Snooze off
• The alarm on indicator ( ) or snooze on indicator
(SNZ) is displayed for each alarm (1 through 4, snooze)
for which alarm on is selected.
• In other modes besides the Alarm Mode, the alarm
name indicator is displayed for each alarm for which
alarm on is selected.
, or
,
— 6 —
• In all modes, the alarm on indicator is shown for any alarm (
SNZ
) that is currently turned on.
To turn the Hourly Time Signal on and off
Hourly time signal
on indicator
1.In the Alarm Mode, use to select the Hourly Time
Signal (SIG).
2.Press A to toggle it on (
displayed).
• The Hourly Time Signal on indicator (
display in all modes while this function is turned on.
AL1
through
AL4
displayed) and off ( not
) is shown on the
, or
Stopwatch
Minutes
Hours
Home city time
1/100 second
To measure times with the stopwatch
Elapsed Time
Start Stop
Split Time
D
Start Split
Two Finishes
D
Start Split
The stopwatch lets you measure elapsed time, split times,
and two finishes.
Seconds
• The display range of the stopwatch is 23 hours, 59
minutes, 59.99 seconds.
• The stopwatch continues to run, restarting from zero
after it reaches its limit, until you stop it.
• Exiting the Stopwatch Mode while a split time is frozen
on the display clears the split time and returns to
elapsed time measurement.
• The stopwatch measurement operation continues even
if you exit the Stopwatch Mode.
• All of the operations in this section are performed in the
Stopwatch Mode, which you enter by pressing C .
DD
B
(SPL displayed)
B
First runner
finishes.
Display time of
first runner.
D
Re-start ClearStop
B
Split release
D
Stop
Second runner
finishes.
D
Stop
B
Split release
Display time of
second runner.
BD
B
Clear
B
Clear
Backlight
Auto light switch
on indicator
To turn on the backlight manually
In any mode, press L to illuminate the display for about one second.
• The above operation turns on the backlight regardless of the current auto light
switch setting.
About the Auto Light Switch
Turning on the auto light switch causes the backlight to turn on for about one second,
whenever you position your wrist as described below in any mode. Note that this
watch features a “Full Auto EL Light,” so the auto light switch operates only when
available light is below a certain level. It does not turn on the backlight under bright
light.
Moving the watch to a position that is parallel to the ground and then tilting it
towards you more than 40 degrees causes the backlight to turn on.
Warning!
• Always make sure you are in a safe place whenever you are reading the
display of the watch using the auto light switch. Be especially careful when
running or engaged in any other activity that can result in accident or injury.
Also take care that sudden illumination by the auto light switch does not
surprise or distract others around you.
• When you are wearing the watch, make sure that its auto light switch is turned
off before riding on a bicycle or operating a motorcycle or any other motor
vehicle. Sudden and unintended operation of the auto light switch can create a
distraction, which can result in a traffic accident and serious personal injury.
To turn the auto light switch on and off
In any mode, hold down L for about two seconds to toggle the auto light switch on
(
displayed) or off ( not displayed).
• The auto light switch on indicator (
light switch is turned on.
The backlight uses an EL (electro-luminescent) panel that
causes the entire display to glow for easy reading in the
dark. The watch’s auto light switch automatically turns on
the backlight when you angle the watch towards your face
in the dark.
• The auto light switch must be turned on (indicated by
the auto light switch on indicator) for it to operate.
• See “Backlight Precautions” for other important
information about using the backlight.
Parallel to
ground
More than
40
°
) is on the display in all modes while the auto
Battery
This watch is equipped with a solar cell and a rechargeable battery (secondary
battery) that is charged by the electrical power produced by the solar cell. The
illustration shown below shows how you should position the watch for charging.
Example: Orient the watch so its face
is pointing at a light source.
• Note that charging efficiency drops
when any part of the solar cell is
blocked by clothing, etc.
• The illustration shows how to position
a watch with a resin band.
Important!
• Storing the watch for long periods in an area where there is no light or wearing it in
such a way that it is blocked from exposure to light can cause rechargeable battery
power to run down. Be sure that the watch is normally exposed to bright light
whenever possible.
• This watch employs a solar cell that converts light into electricity that charges a builtin rechargeable battery. Normally, the rechargeable battery should not need
replacement, but after very long use over a number of years, the rechargeable
battery may lose its ability to achieve a full charge. Should you notice problems with
getting the rechargeable battery to a full charge, contact your dealer or CASIO
distributor about having the rechargeable battery replaced.
• The rechargeable battery should be replaced with a CASIO-specified CTL1616
battery only. Other rechargeable batteries can cause damage to the watch.
• All data stored in memory is deleted, and the current time and all other settings
return to their initial factory defaults whenever battery power drops to Level 4 and
when you have the battery replaced.
• Turn on the watch’s Power Saving function and keep it in an area normally exposed
to bright light when storing it for long periods. This helps to keep the rechargeable
battery from going dead.
Battery Power Indicator
The battery power indicator on the display shows you the current status of the
rechargeable battery’s power.
Level
Battery power indicator
Battery Power
Indicator
Module 2607 Module 2637
1
2
3
Charge Soon Alert
Recover indicator
• The Level 3 charge warning indicator tells you that battery power is very low, and
that exposure to bright light for charging is required as soon as possible.
• At Level 4, all functions are disabled and settings return to their initial factory
defaults. Functions are enabled once again after the rechargeable battery is
charged, but you need to set the time and date after the battery reaches Level 3
from Level 4. You will not be able to set any of the other settings until the battery
reaches Level 2 after dropping to Level 4.
• Leaving the watch in direct sunlight or some other very strong light source can
cause the battery power indicator to temporarily show a reading that is actually
higher than the battery level. The correct battery power indicator should appear after
a few minutes.
• If you use the backlight or the alarms a number of times during a short period, the
Recover indicator (R
disabled until battery power recovers.
Backlight
Beeper tone
Calibration reception
After some time, battery power will recover and the Recover indicator (R ) will
disappear, indicating that the above functions are enabled again.
Charging Precautions
Certain charging conditions can cause the watch to become very hot. Avoid leaving
the watch in the areas described below whenever charging its rechargeable battery.
Also note that allowing the watch to become very hot can cause its liquid crystal
display to black out. The appearance of the LCD should become normal again when
the watch returns to a lower temperature.
Warning!
Leaving the watch in bright light to charge its rechargeable battery 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
• Too close to an incandescent lamp
• Under direct sunlight
Charging Guide
After a full charge, timekeeping remains enabled for up to about six months, while the
watch is used under the conditions described below.
Operating Conditions
•
Watch is not exposed to light
•
Display on 18 hours per day, sleep state 6 hours per day
•
1 backlight operation (1.5 seconds) per day
•
10 seconds of alarm operation per day
•
4 times calibration reception per day
Charge Times
Exposing the watch to light for the periods shown below each day restores the power
used by the above operating conditions.
4
) appears on the display and the following operations become
Exposure Level (Brightness) Approximate
Outdoor Sunlight (50,000 lux) 5 minutes
Sunlight Through a Window (10,000 lux) 24 minutes
Daylight Through a Window on a Cloudy Day (5,000 lux) 48 minutes
Indoor Fluorescent Lighting (500 lux) 8 hours
• Stable operation is promoted by frequent charging.
Solar cell
Function Status
All functions enabled.
All functions enabled.
Beeper tone, backlight,
calibration signal
reception, display, and
buttons are disabled.
All functions, including
timekeeping, are
disabled.
Exposure Time
Recovery Times
The table below shows the amount exposure that is required to take the battery from
one level to the next.
Exposure Level
(Brightness)
Outdoor Sunlight
(50,000 lux)
Sunlight Through a
Window (10,000 lux)
Daylight Through a
Window on a Cloudy
Day (5,000 lux)
Indoor Fluorescent
Lighting (500 lux)
• The above exposure time values are all for reference only. Actual required exposure
times depend on lighting conditions.
Approximate Exposure Time
Level 4 Level 3 Level 2 Level 1
▲
1 hour 14 hours 3 hours
3 hours 70 hours 14 hours
5 hours 143 hours 28 hours
57 hours ------------ ------------
Reference
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
Auto Return Features
• If you leave the watch in the Time Recorder Mode or Alarm Mode for two or three
minutes without performing any operation, it automatically changes to the
Timekeeping Mode.
• If you leave a screen with flashing digits or a cursor on the display for two or three
minutes without performing any operation, the watch automatically saves anything
you have input up to that point and exits the setting screen.
Data and Setting Scrolling
The B and D buttons are used in various modes and setting screens 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.
Initial Screens
When you enter the Alarm or World Time Mode, the data you were viewing when you
last exited the mode appears first.
Time Calibration Signal Reception
• Reception is best when the antenna built into the 12 o'clock edge of the watch is
facing in the general direction of the signal transmitter. Note, however, that moving
the watch while the time calibration signal receive operation is taking place will make
stable reception impossible.
• Proper signal reception can be difficult or even impossible under the conditions listed
below.
Inside a
Inside or
among
buildings
• Radio interference can make signal reception impossible.
• Strong electrostatic charge can result in the wrong time being set.
• Even when the watch is within the reception range of the transmitter, signal
reception is impossible if the signal is blocked by mountains or other geological
formations between the watch and signal source
• Signal reception is affected by weather, atmospheric conditions, and seasonal
changes.
• The time calibration signal is bounced off the ionosphere. Because of this, such
factors as changes in the reflectivity of the ionosphere, as well as movement of the
ionosphere to higher altitudes due to seasonal atmospheric changes or the time of
day may change the reception range of the signal and make reception temporarily
impossible.
• The watch is designed to automatically update the date and day of the week for the
period January 1, 2000 to December 31, 2099. Setting of the date by the time
calibration signal cannot be performed starting from January 1, 2100.
• This watch can receive signals that differentiate between leap years and non-leap
years.
• If you are in an area where proper time calibration signal reception is impossible, the
watch keeps time with the precision noted in “Specifications.”
• Check the following points whenever you experience problems with your watch.
Problem
Cannot perform
manual receive.
Auto receive is
turned on, but
the receiving
indicator (Level
4) does not
appear on the
display.
Time setting is
incorrect
following signal
reception.
vehicle
Near
household
appliances or
office
equipment
Near a
construction
site, airport, or
other sources
of electrical
noise
.
Probable Cause
•
The watch is not in the Timekeeping Mode.
• You do not select one of the following
City Codes as your Home City Code:
BER, PAR , LON, or ATH.
• You changed the time setting manually.
• The watch was not in the Timekeeping
or World Time Mode, or you were
performing some button operation
during the auto signal receive operation
was performed.
Even if receive is successful, the
•
receiving indicator (Level 4) disappears
every day at 3am.
• Time data (hour, minutes, seconds) only
was received during the last receive
operation. The receiving indicator (Level
4) appears only when time data and
date data (year, month, day) are both
received.
• If the time is one hour off, the DST
setting may be incorrect.
• The Home City Code setting is not
correct for the area where you are using
the watch.
• Enter the Timekeeping Mode
and try again.
• Select the correct Home City
Code.
• Perform manual signal receive
or wait until the next auto
signal receive operation is
performed.
• Check to make sure the watch
is in a location where it can
receive the signal.
• Change the DST setting to
Auto DST.
• Select the correct Home City
Code.
— 7 —
▲
Near hightension
power lines
What you should do
Among or
behind
mountains
▲
Loading...