Casio WVA-300D, QW-2367 Service Manual & Parts List
SERVICE MANUAL
& PARTS LIST
REF. NO. S/M-763
JAN. 2002
MODULE NO.
QW-2367
WVA-300D
R
(WITHOUT PRICE)
CONTENTS
1. SPECIFICATIONS: QW-2367..................................................................... 1
2. OPERATION CHART: QW-2367................................................................ 2
3. DRAWINGS: QW-2367
3-1. LCD DIAGRAM ............................................................................................. 7
3-2. CIRCUIT DIAGRAM ......................................................................................8
3-3. CHECKING TERMINALS AND COMPONENTS ..........................................9
3-4. P1 ~ P5 PADS ............................................................................................... 9
4. EXPLODED VIEW: QW-2367.................................................................... 10
5. PARTS LIST: QW-2367............................................................................. 11
6. PRECAUTIONS FOR REPAIR: QW-2367
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE ..................................... 12
6-2. ACCURACY CHECKING ............................................................................. 12
7. TROUBLESHOOTING: QW-2367 ............................................................. 13
1. SPECIFICATIONS: QW-2367
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 0.548 µA maximum
Alarm system Piezo plate on Cover/Back
Accuracy ±15 sec./month
Accuracy setting system Trimmer capacitor
Accuracy checking See page 12
Functions • Electro-luminescent backlight
Afterglow
• Solar powered
• Time calibration signal reception
Auto receive (Twice a day, at 2:00 AM, 4:00 AM)
Manual receive
Last date/time received display
• Time Calibration Signal
Station name: DCF77 (Mainflingen, Germany)
Frequency: 77.5 kHz
Range: Approx. 1,000 km
• 20 Telememo pages
8 letters and 12 numbers per page
Others: Auto-sort, remaining memory
• World Time
29 time zones (28 cities), daylight saving time on/off
• Day Counter
Automatically counts down the days from the current date to a target date.
Memory capacity: 5records (8 characters of text)
• 1/100-sec. stopwatch
Measuring capacity: 23:59’59.99"
Measuring modes: Elapsed time, split time, 1st-2nd place times
• Daily alarms
3 independent daily alarms
• Hourly time signal
• Low battery warning display
• Auto-calendar (to year 2039)
• 12/24-hour format
• Regular timekeeping:
Analog: 2 hands (Hr, min.)
Digital: Hr, min, sec, pm, month, date, day
— 1 —
2. OPERATION CHART: QW-2367
General Guide
·
Press C to change from mode to mode.
·
In any mode, press B to illuminate the display.
Telememo Mode
Alarm Mode
Timekeeping Mode
Day Counter Mode
Press C.
Timekeeping
Use the Timekeeping Mode to set and view the current time and date. You can
also display the Last Signal screen in the Timekeeping Mode.
Last Signal Date Time
Receive date
Receive time
·
The Last Signal screen alternates between the time and date that the time
calibration signal was successfully received.
Current Time Setting
Normally, you do not need to do anything to set the current time as long as you
are within an area in West Europe where the watch can pick up the time
calibration signal. You can also set the current time manually when you are
outside the range of the signal.
·
Before using the watch after purchasing it, use the procedure under
“Selecting Your Home City Code” to specify your Home City, and then use the
procedure under “To perform manual time calibration signal reception”.
·
Note that after you set your Home City 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 Digital Time and Date Manually” for information about
manual settings.
·
The analog time of this watch is synchronized with the digital time. Because
of this, the analog time setting is automatically adjusted whenever you
change the digital setting. See “Analog Timekeeping” for more information.
Setting the Digital Time and Date Manually
Once you select a Home City code and set its time, you can view the current
time in other cities by simply changing the city code setting. Even if you plan to
use the watch without enabling auto time calibration, be sure to select a Home
City code (the city code whose time and date you are setting), before you set
the time and date.
To set the current digital time and date manually
Sleep
Mode
3.When the setting you want to change is flashing, use B and/or D to
change it as described below.
Setting
Auto Receive
City Code
DST
12/24-Hour
format
Auto
Receive
Receive indicator
Press D. Press A.
1.In the Timekeeping Mode, hold down A until the
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2.Press C to move the flashing in the sequence
City Code
Day
Screen
Month – Day
Day of week
current Auto Receive On/Off setting (the receive
indicator) starts to flash, which indicates the setting
screen.
shown below to select other settings.
12/24-Hour
Format
Month Year Minutes
Button Operations
Press D to toggle auto receive on and off.
Use D (+) and B (–) to change the
setting.
Press D to toggle between Daylight
Saving Time (ON) and standard time
(OFF).
·
Pressing D performs a different
operation when BER, LON, PAR , CAI, or
JRS is selected as Home City Code. See
“Auto Summer Time (DST) Switching”.
Press D to toggle between 12-hour (12H)
and 24-hour (24H) timekeeping.
PM indicator
Hour : Minutes
Seconds
SecondsDST
Hour
Hand Setting Mode
Setting
Screen
Hour, Minutes
Seconds
Month, Day
Year
Sleep Mode
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” at the back of this manual for a complete list of
available codes.
·
See details about the sleep mode.
·
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.
Selecting Your Home City Code
You can select a city code for your Home City (the city where you normally use
the watch). This data can be changed any time you move to another
geographic area.
·
See “City Code Table” at the back of this manual for a complete list of
available codes.
·
Once you select a Home City code and set its time, you can use World Time
to view the current time in any one of 28 cities (29 time zones) around the
world by simply specifying a city code.
To select your Home City code
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City code
Time Calibration Signal Reception
This watch is designed to pick up a time calibration signal transmitted from
Mainflingen, Germany 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 twice each day and makes appropriate
adjustments. With Manual Receive, you perform a specific button operation to
receive the calibration signal.
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 the “To select your Home City code”
for details.
·
Time calibration reception is limited to specific geographic areas in West
Europe.
·
The current time setting in accordance with the time calibration signal takes
priority over any time settings you make.
·
The watch is designed to automatically update the date and day of the week
for the period January 1, 2000 to December 31, 2039. Setting of the date by
the time calibration signal cannot be performed starting from January 1,
2040.
·
This watch can receive signals that differentiate between leap years and nonleap years.
·
Auto Receive is turned on when the watch is shipped from the factory.
·
See the information under “Time Calibration Signal Reception Precautions” if
you experience problems with time calibration signal reception.
1.In the Timekeeping Mode, hold down A until the
current Auto Receive On/Off setting (the receive
indicator) starts to flash, which indicates the setting
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screen.
2.Press C to move the flashing to the City Code
setting.
3.Use D (+) and B (–) to change it.
4.Press A to exit the setting screen.
Button Operations
Use D (+) and B (–) to change the
setting.
Press D to reset the seconds to 00.
Use D (+) and B (–) to change the
setting.
Press D to toggle the sleep mode on
(On) and off (OF).
Stopwatch Mode
— 2 —
Auto Summer Time (DST) Switching
The time calibration signal transmitted from Mainflingen, Germany includes
both standard time and summer time (Daylight Saving Time or DST) data.
Because of this, the watch automatically switches between standard time and
summer time (DST) automatically whenever BER, LON, PAR, CAI, or JRS is
selected as the Home City code.
·
Daylight Saving Time (DST) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use
Daylight Saving Time.
Auto Summer Time (DST) Default Settings
The following shows the default settings for each of the Home City codes that
support auto summer time (DST) switching.
Home City Code
BER, LON, PAR
CAI, JRS
The following flows show how to switch the auto summer time setting between
AUTO, ON, and OFF.
·
The following are the meanings of the AUTO, ON, and OFF indicators.
AUTO - Watch will switch between standard time and summer time (DST)
automatically.
ON - Summer time (DST)
OFF - Standard time (summer time turned off)
·
See information about configuring summer time (DST) settings.
Auto Summer Time Default Setting
AUTO
OFF
When BER is the Home City Code
Press D.
AUTO (Default)
After receipt of the time calibration
signal turns summer time OFF.
After receipt of the time calibration
signal turns summer time ON.
When LON, PAR, CAI, or JRS is the Home City Code
Press D.
AUTO (Default for
LON and PAR )
To perform manual time calibration signal reception
Receive indicator
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Current time
·
After signal reception is complete, the display of the watch changes to the
Last Signal screen, which shows the new signal receive date and time.
·
The receive indicator (
attempt was successful.
Note
·
To interrupt a receive operation and return to the Timekeeping Mode (Date or
Time screen), press D.
·
If the receive operation is unsuccessful, the message ERR appears on the
Last Signal screen for about one or two minutes. After that, the watch returns
to the Timekeeping Mode (Date or Time screen).
·
You can also change from the Last Signal screen to the Timekeeping Mode
(Date or Time screen) by pressing D.
About the Receive Indicator
The receive indicator shows the strength of the calibration signal being received.
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OFF (Default for
CAI and JRS)
1.Place the watch on a stable surface to its top (12
o’clock side) is facing in the general direction of
Frankfurt, Germany.
·
Position the watch so the case is pointing
upwards as shown in the nearby illustration. This
puts the watch in the optimum position for time
calibration signal reception.
·
Note that signal reception is poor if the watch is
on its back or side.
2.In the Timekeeping Mode, hold down D for about
two seconds, until the watch beeps and the current
time is flashing on the display.
·
This indicates that signal reception has started.
·
Time calibration signal reception takes from four
to 11 minutes. Take care that you do not move the
watch during this time.
) indicates that the calibration time reception
Press B.
Press Bor D.
ON
Weak Strong
For best reception, be sure to keep the watch in a location where signal strength is
strongest.
·
Even in an area where signal strength is strong, it takes about 10 seconds for
signal reception to stabilize enough for the receive indicator to indicate signal
strength.
·
Use the receive indicator as a guide for checking signal strength and for
finding the best location for the watch during signal receive operations.
·
The receive indicator remains on the display in all modes following reception
of the time calibration signal and calibration of the watch’s time setting. The
receive indicator does not appear 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 digital time in the Timekeeping Mode reaches
2:00 AM, and 4:00 AM each day (calibration times).
Note
·
The Auto Receive operation is performed only if the watch is in the
Timekeeping Mode when one of the calibration times is reached. It is not
performed if the calibration time is reached while you are making settings
(while settings are flashing on the display).
·
Auto receipt of the calibration signal is designed to be performed early in the
morning, while you sleep (provided that the digital 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 receive indicator (
time reception attempts were successful. If you do not see the receive
indicator, it means there was some problem with the last 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.
·
Even if the calibration reception is successful, the receive indicator
disappears every day at 3am.
·
When auto receive is turned on, the watch receives the calibration signal for
four to 11 minutes each day when the digital time reaches 2:00 AM, and 4:00
AM. Do not operate any of the watch’s buttons within 15 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 shown
on the digital display. The receive operation will be performed whenever the
digital display shows 2:00 AM, and 4:00 AM, regardless of whether or not the
displayed time is actually the correct time.
·
When two 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
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Analog Timekeeping
The analog time of this watch is synchronized with the digital time. The analog
time setting is adjusted automatically whenever you change the digital time.
Note
·
Whenever you manually change the digital time setting or Home City code, or
if the time is adjusted by receipt of a time calibration signal, the hands of the
analog timepiece move clockwise or counter clockwise to adjust to the new
setting. If the analog time does not match the digital time for any reason, use
the procedure described under “To adjust the analog time” to match the
analog setting to the digital setting.
·
Whenever you need to adjust both the digital and the analog time settings
manually, make sure you adjust the digital setting first.
·
Depending on how much the hands have to move in order to adjust to the
digital time, it may take some time before the analog hands stop moving.
·
The analog time does not change while a signal receipt operation is in
progress. After the receive operation is complete, the analog time is
automatically adjusted to match the digital time.
·
If a signal receive operation is performed while the analog time and digital
time do not match, the digital time will be adjusted correctly but the analog
time may not be adjusted. If this happens, perform the steps below to adjust
the analog time.
To adjust the analog time
Current time
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When you want to do this:
Move the hand setting
forward 20 seconds
) indicates that one or both of the last calibration
1.In the Timekeeping Mode, hold down A until the
current Auto Receive On/Off setting (the receive
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indicator) starts to flash, which indicates the setting
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screen.
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2.Press D to toggle Auto Receive on (ON) and off
(OFF).
3.Press A to exit the setting screen.
1.In the Timekeeping Mode, press C five times to
enter the Hand Setting Mode.
2.Hold down A until the current digital time starts to
flash, which indicates the setting screen.
·
Note that you will not be able to change to the
setting screen if the analog hands are moving
because the watch is automatically adjusting the
analog time to match the digital time. If this
happens, wait until the hands stop moving.
3. Use D (+) and B (–) to adjust the analog setting
as described below.
Perform this button operation:
·
Press D.
— 3 —
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