Casio WVA-400D, WVA-400DJ, QW-2727, QW-2730 Service Manual And Parts List

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SERVICE MANUAL

& PARTS LIST

REF. NO. S/M-817

JUN. 2003

MODULE NO.

QW-2727/2730

WVA-400D WVA-400DJ

Ver.1 : Nov. 2003

(WITHOUT PRICE)

CONTENTS

Page

1. SPECIFICATIONS: MODULE QW-2727/2730 ........................................... 1

2. OPERATION CHART: MODULE QW-2727 ............................................... 2

3. DRAWINGS: MODULE QW-2727/2730

3-1. LCD DIAGRAM ............................................................................................. 9

3-2. CIRCUIT DIAGRAM .....................................................................................10

3-3. CHECKING TERMINALS AND COMPONENTS ......................................... 12

3-4. N1, N2, R1~ R3 PADS ................................................................................. 13

4. EXPLODED VIEW: MODULE QW-2727/2730 .......................................... 14

5. PARTS LIST: MODULE QW-2727/2730 ................................................... 16

6. PRECAUTIONS FOR REPAIR: MODULE QW-2727/2730

6-1. AC (ALL CLEAR) AND REMOVING OF MODULE .....................................17

6-2. ACCURACY CHECKING ............................................................................. 17

6-3. SOLAR CELL-PCB ASS'Y CONTACT CHECKING....................................18

6-4. HOW TO CHECK TILT SENSOR................................................................. 18

7. TROUBLESHOOTING: MODULE QW-2727/2730.................................... 19

1. SPECIFICATIONS: MODULE QW-2727/2730

Item Detail

Battery CTL1616 (Storage battery)

Note: Use CTL1616 only. Other storage battery or CR1616 can cause

damage to the watch.

Battery life Approx. 5 months (from full charged condition) Current consumption 0.568 µA maximum Alarm system Piezo plate on Cover/Back Accuracy ±15 sec./month Accuracy setting system Trimmer capacitor Accuracy checking See page 17 Functions • LED light

Afterglow

• Solar powered

• Time calibration signal reception Auto receive Manual receive Last date/time received display

• Time Calibration Signal

QW-2727: Receivable Time Calibration Signals

Mainflingen, Germany (Call Sign: DCF77, Frequency: 77.5kHz)

QW-2730: Receivable Time Calibration Signals Fort Collins,

Colorado (Call Sign: WWVB, Frequency: 60kHz) Fukushima, Japan (Call Sign: JJY, Frequency: 40kHz) Fukuoka/Saga, Japan(Call Sign: JJY, Frequency: 60kHz)

• e-DATE MEMORY Meomory capacity: Up to 40 records for Internet access codes and other

data (when there are 7characters per record), actual number of records depends on the number of characters per record

• World Time 29 time zones (30 cities), daylight saving time on/off

• Time Memo Memory for up to 10 time memos, each with date (month and day) and time

• 1/100-sec. stopwatch Measuring capacity: 23:59’59.99" Measuring modes: Elapsed time, split time, 1st-2nd place times

• Daily alarms 5 independent daily alarms snooze feature for one alarm only

• Hourly time signal

• Low battery warning display

• Auto-calendar (to year 2039)

• 12/24-hour format

• Regular timekeeping: Analog: 3 hands (Hr, min, sec) Digital: Hr, min, sec, pm, month, date, day

— 1 —

2. OPERATION CHART: MODULE QW-2727

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 f or important information you need to

know when exposing the watc

If the digital display of the watch is blank...

h to bright light.

If the Power Saving indicator (PS) is flashing on the display, it means that the display is blank because the watch’s Power Saving function has turned off the display to conserve power. Power Saving automatically turns off the display and enters a sleep state whenever your watch is left for a certain period where it is dark. If the watch is kept in the dark for a longer period, the analog hands will also stop moving after a few days.

• 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, if you press any button, or if you angle the watch towards your face for reading.

• See “Power Saving Function” for more inf

ormation.

About This Manual

• 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.

General Guide

• Press C to change from mode to mode.

• In any mode, press B to illuminate the display.

Timekeeping Mode

Press C

▲

World Time Mode

Hand Setting Mode

▲

Radio-controlled Timekeeping

Hour hand

Minute hand

Day of week

Seconds hand

Month – Day

To set your Home City

City code

Time Calibration Signal Reception

There are two different methods you can use to receive the time calibration signal: auto receive and manual receive.

• Auto Receive

With auto receive, the watch automatically picks up the time calibration signal five times a day at 0:00 a.m., 1:00 a.m., 2:00 a.m., 3:00 a.m., and 4:00 a.m. For more information, see “About Auto Receive”.

• Manual Receive

Manual receive lets you start a time calibration receive operation with the press of a button. For more information, see “To perform manual receive”.

This watch is designed to pick up a time calibration signal transmitted from Mainflingen, Germany (located 25 kilometers southeast of Frankfurt), and update its time setting accordingly. The time calibration signal includes both Standard Time and Daylight Saving Time (summer time) data.

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.

• The first thing you should do after purchasing this watch is to set your Home City, which is the city where you will normally use the watch. For more information, see “To set your Home City” below.

• 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 Timek eeping” f or more information.

1. In the Timekeeping Mode, hold down A until the city

code starts to flash, which indicates the setting screen.

• The second hand will move at high speed to the 12

o’clock position, where it will stop.

2. Use D (+) and B (–) to select the city code you want to

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,

Amsterdam, Hamburg,

LON

: London

3. Press A twice to e

• The second hand will advance at high speed to the correct position in accordance with seconds count of the digital time, and resume normal movement from there.

• Normally, your watch should show the correct time as soon as you select your Home City Code. If it does not, it should adjust automatically after the next auto receive operation (in the middle of the night). You can also perform manual receive or you can set the time manually.

• If you are in an area that does not use Daylight Saving Time (summer time), turn off the DST setting.

Frankfurt, Vienna

xit the setting screen.

Alarm Mode

▲

Stopwatch

Mode

▲

Important!

• Position the watch as shown in the nearby illustration, with its 12 o’clock side facing towards a window. Make sure there are no metal objects nearby

• Proper signal reception can be difficult or even impossible under the conditions listed

below

Inside or

among

buildings

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 0:00 a.m., 1:00 a.m., 2:00 a.m., 3:00 a.m., and 4:00 a.m. each day (calibration times). The watch will also perform an additional auto receive operation at 5:00 a.m. if none of regularly scheduled auto receive operations are successful.

Frankfurt

Inside a

vehicle

▲

Resin Band

Metal Band

Near household appliances or office equipment

• Signal reception is normally better at night than during

the day.

• Time calibration signal reception takes from two to six

minutes. Take care that you do not perform any button operations or move the watch during this time.

• This watch is able to receive the time calibration signal

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 1,000 kilometers.

• At distances further than about 500 kilometers, the

signal may become weak and reception may be impossible under certain conditions.

• Signal reception may be poor in the shaded area on the

map, even though it is within 1,000 kilometers of the signal transmitter.

• See the information under “Signal Receive

Troubleshooting” if you experience problems with time calibr

ation signal reception.

Data Memory Mode

▲

Time Recorder Mode

Near a construction site, airport, or other sources of electrical noise

Near hightension power lines

▲

Among or behind mountains

— 2 —

Note

•

The auto receive operation is performed only if the watch is in the Timekeeping Mode or World Time Mode when one of the calibration times is reached. It is not performed if a calibration time is reached while an alarm is sounding, or while you are configuring settings (while settings are flashing on the display).

•

When a receive operation starts, the second hand will move at high speed to the 12 o’clock position where it will stop until the receive operation is complete.

•

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.

•

When auto receive is turned on, the watch receives the calibration signal for two to six minutes everyday when the time in the Timekeeping Mode reaches each of the five calibration times. Do not perform any button operation within six minutes before or after any of the five calibration times. Doing so can interfere with correct calibration.

•

Remember that reception of the calibration signal depends on the time kept in the digital display. The receive operation will be performed whenever the display shows one of the five calibration times, regardless of whether or not the displayed time is actually the correct time.

•

When two, three, four, or five 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.

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.

Receiving indicator

•

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 Level 4 receiving indicator remains on the display in all modes following reception of the time calibration signal and calibration of the watch’s time setting. The Level 4 receiving indicator is not displayed if signal reception was unsuccessful or after manual adjustment of the current time setting.

•

The Level 4 receiving indicator indicates that at least one of the five calibration signal receive operations was successful. Note, however , that the Level 4 receiving indicator is cleared from the display at 3:00 a.m. each day.

To perform manual receive

Receiving indicator

Note

•

To interrupt a receive operation and return to the Timekeeping Mode, press D.

•

If the receive operation is unsuccessful, the message for about one or two minutes. After that, the watch returns to the Timekeeping Mode.

•

You can also change from the Last Signal or timekeeping screen by pressing

To turn auto receive on and off

On/off status

To display the Last Signal screen

In the Timekeeping Mode, press D to display the Last Signal screen. The Last Signal screen shows the date and time that the time calibration signal was last receiv

Weak

(Level 1)

Strong

(Le

vel 4)

1.Place the watch on a stable surface so its top (12 o’clock side) is facing towards a window.

•

Note that signal reception will be poor if the watch is on its back or side.

2.In the Timekeeping Mode, hold down

seconds until the watch beeps.

3.Release

and the current time or date flashes to

indicate that signal reception has started.

•

When a receive operation starts, the second hand will move at high speed to the 12 o’clock position where it will stop until the receive operation is complete

•

Time calibration signal reception takes from two to six minutes. Take care that you do not perform any button operations or move the watch during this time.

•

After signal reception is complete, the display of the watch changes to the Last Signal screen.

ERR

1.In the Timekeeping Mode, hold down A until the city code starts to flash, which indicates the setting screen.

•

The second hand will move at high speed to the 12 o’clock position, where it will stop.

twice to move the flashing to the auto receive

2.Press on/off setting.

3.Press

to toggle auto receive on (ON) and off (OF).

•

If the current Home City setting is a city code that does not support auto receive, “ of the on/off indicator. This means you cannot turn auto receive on or off.

twice to exit the setting screen.

4.Press

•

The second hand will advance at high speed to the correct position in accordance with the digital time seconds count, and resume normal movement from there

screen to the normal

for about two

appears on the display

” appears in place

ed.

Receive time

Alternate at twosecond interva

Press .

▲

Receive date

Last Signal Screen

Signal Receive Troubleshooting

Check the following points whenever you experience problems with calibration signal reception.

Problem

Cannot perform manual receive

Auto receive is turned on, but the Level 4 receiving indicator does not appear on the display

Time setting is incorrect following signal reception.

•

For further information, see “Time Calibration Signal Reception” and “Time Calibration Signal Reception Precautions”

Probable Cause

•

The watch is not in the Timekeeping Mode.

• Your current Home City is not one of the follo

wing city codes:

BER, PAR , LON, or AT H.

You changed the time setting manually.

••The watch was not in the Timekeeping

or World Time Mode, or you w ere performing some button operation during the auto receive operation.

•

Even if receive is successful, the Level 4 receiving indicator disappears every day at 3 a.m.

• 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

tch.

the wa

What you should do

• Enter the Timekeeping Mode and try again.

• Select BER, PAR, LON, or ATH as your Home City

• 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

Timekeeping

Use the Timekeeping Mode to set and view the current time and date.

Day

Month —

Press .

▲

Day of week

Setting the Digital Time and Date Manually

Make sure you select your Home City code before you 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 digital time and date manually

City code

3. When the setting you want to change is flashing, use and/or to change it as described below

Screen: To do this:

BER

DST

R/C

12H

Screen (flashing):

'02

4. After configuring the Power Saving on/off setting, press to exit the setting screen.

•

The second hand will advance at high speed to the correct position in accordance with the digital time seconds count, and resume normal movement from there.

•

See “City Code Tab le” for a complete list of av ailable city codes .

•

See “Power Saving Function” for details about the Power Saving.

•

The auto receive setting is used for time calibration signal reception only. See “About Auto Receive” for details

Change the city code Toggle between Daylight Saving

Time (ON) and Standard Time (

Toggle between auto receiv (

Toggle between 12-hour ( 24-hour (

1.In the Timekeeping Mode, hold down code starts to flash, which indicates the setting screen.

•

The second hand will move at high speed to the 12 o’clock position, where it will stop.

2.Press or shown below to select other settings

Press

12/24-Hour Format

Power Saving

)

) and off (OF)

) timekeeping

24H

To do this:

Reset the seconds to Change the hour Change the minu Change the ye Change the month Change the day Toggle Power Saving on

(

) and off (OF)

Hour: Minutes Seconds

▲

until the city

to move the flashing in the sequence

/ Press

DSTCity Code

Seconds

Day

e on

) and

12H

tes

Auto

Receive

Hour Minutes

Month Year

Do this:

Use

(+) and

Press

• Pressing

Press

performs a different operation when BER, PAR, LON, or ATH is selected as Home City code. See “To change the Daylight Saving

Time (summer time)

setting”.

Press D.

Do this:

Press D. Use

(+) and B (–).

Press

(–).

— 3 —

Daylight Saving Time (DST)

Daylight Saving Time (summer time) advances the time setting by one hour from Standard Time. Remember that not all countries or even local areas use Daylight Saving Time. The time calibration signal transmitted from Mainflingen includes both Standard Time and DST data. When the DST setting is turned on, the watch switches between Standard Time and DST (summer time) automatically in accordance with the Mainflingen signal.

•

The default DST setting is Auto DST ( or

ATH

as your Home City code.

•

If you experience problems receiving the time calibration signal in your area, it is probably best to switch between Standard Time and Daylight Saving Time (summer time) manually .

To change the Daylight Saving Time (summer time) setting

1. In the Timekeeping Mode, hold down A until the city code starts to flash, which indicates the setting screen.

2. Press C and the DST setting screen appears.

3. Use D to cycle through the DST settings in the sequence shown below.

Auto DST (A) DST off (OF) DST on (

4. When the setting you want is selected, press A twice to e

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

•

The hands for the analog timepiece move to adjust to a new setting whenever any of the following occurs.

When you change the digital time setting manually When the digital time setting is changed by time calibration signal reception When you change the Home City code and/or DST 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 mo

To adjust the analog time

When you want to do this:

Move the hand setting forw

ard 20 seconds

Move the hand setting back 20 seconds Move the hand setting a short

ard at high speed

way forw

Move the hand setting a short way bac

Move the hand setting a long way forward at high speed

Move the hand setting a long way back

6. Press A to exit the setting screen.

•

The minute hand will be adjusted slightly to match the seconds when you exit the setting screen.

•

To return to the Timekeeping Mode, press C.

k at high speed

at high speed

) whenever you select

1.In the Timekeeping Mode, press C six times to enter the Hand Setting Mode.

2.Hold down A until the setting screen.

•

The second hand will move at high speed to the 12 o’clock position, where it will stop.

3.If the second hand is not pointing precisely at 12 o’clock at this time, use D to adjust its position.

•

Each press of D causes the second hand to advance by one second.

4.Press C. This will cause the time on the digital display to flash, which indicates that adjustment of hour and minute hands is selected.

5. Use D and B to adjust the analog setting as described below

•

Press D.

•

Press B.

•

Hold down D.

•

Release D when the hands reach the setting you want.

•

Hold down B.

•

Release B when the hands reach the setting you want.

•

While holding down D to move the hands at high-speed, press B to lock the high-speed hand movement.

•

To stop the hand movement, press any button.

•

Hand movement stops automatically if the hour hand makes one full (12-hour) revo

•

While holding down B to move the hands at high-speed, press D to lock the high-speed hand movement.

•

To stop the hand movement, press any button.

•

Hand movement stops automatically if the hour hand makes one full (12-hour) revo

“” starts to flash, which indicates

Perform this button operation:

BER, PAR, LON

)

xit the setting screen.

ving.

lution.

World Time

City Code

Current time in the selected city code

To view the time in another city

While in the World Time Mode, press D to scroll through the city codes (time zones).

• For full information on city codes, see the “City Code Table”.

To toggle a city code time between Standard Time and Daylight Saving Time

DST indicator

The World Time Mode digitally displays the current time in 30 cities (29 time zones) around the world.

•

Pressing A in the World Time Mode causes the applicable city code to appear on the digital display for about two seconds.

•

If the current time shown for a city is wrong, check your Home City time settings and make the necessary changes.

•

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 Timekeeping Mode’s Home City time.

•

All of the operations in this section are performed in the World Time Mode, which you enter by pressing C.

1.In the World Time Mode, use D to display the city code (time zone) whose Standard Time/Daylight Saving Time setting you want to change.

•

Pressing A in the World Time Mode causes the applicable city code to appear on the digital display for about two seconds.

2.Hold down A to toggle Daylight Saving Time ( displayed) and Standard Time (

•

Note that you cannot use the World Time Mode to change the DST setting of the Home City code you currently have selected in the Timekeeping Mode. See

“Daylight Saving Time(DST)” for information about

turning the Home City code DST setting on and off

DST

•

The

indicator will appear 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 aff

ected.

DST

not displayed).

Alarms

The Alarm Mode gives you a choice of four one-time

Alarm name

Alarm time (Hour : Minutes)

To set an alarm time

Target Alarm Screen

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 operation is performed a total of seven times, every five minutes, or until you turn the alarm off. The target alarm counts the time remaining from the current Home City time to the target alarm time.

•

Pressing any button stops the alarm tone operation.

•

Performing any one of the following operations during a 5-minute interval between snooze alarms cancels the current snooze alarm operation.

Displaying the Timekeeping Mode setting screen Displaying the alarm setting screen

To test the alarm

In the Alarm Mode, hold down D to sound the alarm.

alarms and one snooze alarm. One of the one-time alarms functions as a “target alarm,” which counts the time remaining from the current Home City time to the target alarm time. You should also use the Alarm Mode to turn the Hourly Time Signal on and off.

•

There are five alarms named (target alarm), and snooze alarm only. Alarms

TAL

can be used as one-time alarms only.

•

All of the operations in this section are performed in the Alarm Mode, which you enter by pressing C.

1.In the Alarm Mode, use D to scroll through the alarm screens until the one whose time you want to set is displayed.

AL1 AL2 AL3

SIG SNG TAL

2.After you select an alarm, hold down until the hour setting of the alarm time starts to flash, which indicates the setting screen.

•

This operation automatically turns on the alarm.

3.Press C to move the flashing between the hour and minute settings.

4.While a setting is flashing, use D (+) and B (–) to change it.

•

When setting the alarm time using the 12-hour format, take care to set the time correctly as a.m. (no indicator) or p.m. (P indicator).

5.Press A to exit the setting screen.

•

With the target alarm ( countdown as soon as you set the alarm time.

AL1, AL2, AL3, TAL

SNZ SNZ

. You can configure

AL1, AL2, AL3

TAL

), the time starts to

, and

as a

— 4 —

To select the alarm operation type

Snooze on

Alarm on indicator

indicator

To turn the Hourly Time Signal on and off

Hourly time signal on indicator

1.In the Alarm Mode, use D to select the screen for the alarm (

AL1, AL2, AL3, TAL

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 (ALM) or snooze on indicator

(SNZ) is displayed for each alarm (

TAL, SNZ

• The snooze on indicator (SNZ) flashes during the 5-

minute interval between snooze alarms.

• The alarm on indicator (ALM) and snooze on indicator

(SNZ) are displayed in all modes.

• In all modes, the alarm on indicator (ALM) is shown for

any alarm ( tur

1.In the Alarm Mode, use D to select the Hourly Time

2.Press A to toggle it on (SIG displayed) and off (SIG

• The Hourly Time Signal on indicator (SIG) is displayed

in all modes when the Hourly Time Signal is tur

) for which alarm on is selected.

AL1, AL2, AL3, TAL

ned on.

Signal (

SIG

not displayed).

, or

Alarm/

Snooze on

AL1, AL2, AL3

SNZ

) whose

) that is currently

ned on.

Data Memory

You can use the watch’s data memory to store e-mail addresses, Web page URLs, and other te xt data.

• All of the operations in this section are performed in the

Data Memory Mode, which you enter by pressing C.

Data Memory Records

Each data memory record can contain up to 63 characters. Records are stored in memory in the

Text

Record number

To create a new data memory record

Cursor

Text

Record number

To recall data memory records

1. In the Data Memory Mode, press D to scroll forward through data memory records.

• Each press of D advances to the next record and shows its record number and first three characters of its text.

• Pressing D while the last record in memory is on the display changes to the remaining memory screen. Pressing D again displays the first record.

2. Use A to scroll through the text, three characters at a time.

First three characters

Each press of A shows the next three characters.

• An end mark indicates the end of the te

To edit a data memory record

1. In the Data Memory Mode, display the record you want to edit.

2. Hold down A until the flashing cursor appears on the display.

3. Press C to move the flashing to the character you want to change.

4. Use D and B to change the character.

5. After making the changes you want, press A to store them and return to the data memory record screen.

To delete a data memory record

1. In the Data Memory Mode, display the record you want to delete.

2. Hold down A until the flashing cursor appears on the display.

3. Press B and D at the same time to delete the record.

•The message CLR appears to indicate that the record is being deleted. After the

record is deleted, the cursor appears on the display, ready for input.

4. Input data or press A to return to the remaining memor

sequence they are created.

• The number of records you can store in data memory depends on the number of characters that make up each record. See “Data Memory Management” for more infor

mation.

1.In the Data Memory Mode, press A and D at the

same time to display the remaining memory screen.

• You do not have to perform the above step if the remaining memory screen is already on the display.

• If 0% is shown for remaining memory, it means that memory is full. To store another record, you will first have to delete some of the records stored in memory.

2.Hold down A until the flashing cursor appears on the display, which indicates the setting screen.

3.Use B and D to cycle through characters at the current cursor location, and C to move the cursor to the right. See “Inputting Text” for more information.

• If memory becomes full while you are inputting text,

the cursor will jump to the first (leftmost) character of the text when you press C, instead of advancing to the ri

ght.

4.Press A to store your data and return to the data memory record screen (without the cursor).

• The message SET appears for about two seconds,

followed by a data memory record screen, which shows the text you just input, along with a record number automatically assigned by the w

Second three characters

atch.

End mark

xt.

y screen.

— 5 —

Time Recorder

The Time Recorder Mode lets you store up to 10 time entries (month, day, hour, minutes, seconds) with the touch of a button. One way you can use the Time Recorder Mode is to record the start time and the end time of a particular event.

• All of the operations in this section are performed in the Time Recorder Mode, which you enter by pressing CC.

To record a Time Recorder time

Hour : Minutes Seconds

Standby Screen

To recall Time Recorder times

1. In the Time Recorder Mode, press A to recall Time Recorder times.

2. Use D to scroll through times stored in memory.

Time record number

• Each press of D scrolls through time records from higher numbered (newer) records to lower numbered records.

• 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 viewed the Time Recorder times appears first.

To delete all Time Recorder times

In the Time Recorder Mode, press A and D at the same time to delete all Time Recorder times

1.Use C to enter the Time Recorder Mode. This displays the Time Recorder standb

2.Press D to record the current date and time (month,

day, hour, minutes, seconds).

•• The recorded time flashes for about two seconds and

then assigned the next available record number, in the

ange of through . Next the time recorder standby

r screen appears.

• A new time is recorded each time you press D while

the standby screen is on the display.

•

Records are assigned numbers sequentially from through .

• Storing a new time record when there are already 10

records stored in memor shifts the remaining records upwards by 1, and stores the ne

w record as .

▲

Recorded time (Month – Day)

y automatically deletes record ,

Alternate at twosecond interval

▲

y screen.

▲

Recorded time (Hour : Minutes Seconds)

Stopwatch

The stopwatch lets you measure elapsed time, split times, and two finishes.

• The display range of the stopwatch is 99 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

Minutes

Seconds

1/100 second

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

To measure times with the stopwatch

Elapsed Time

Start Stop

➤ ➤

Re-start Clear

➤

Stop

➤

Split Time

Start Split

➤

Split release

➤

Stop

➤

Clear

Two Finishes

Start Split

➤

First runner finishes. Display time of first runner.

➤

Stop

Second runner finishes.

➤

Split release

Display time of second runner

➤

Clear

Backlight

The backlight uses an LED (light-emitting diode) and a

Auto light switch on indicator

light guide panel that cause 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.

To turn on the backlight manually

In any mode, press B to illuminate the display for about one second.

• The above operation turns on the backlight regardless of

the current auto light sw

itch 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 LED 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

Parallel to ground

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 the Timekeeping Mode, hold down B for about two seconds to toggle the auto light switch on (the auto light switch on indicator displayed) and off (the auto light switch on indicator not displayed).

• The auto light switch on indicator is on the display in all modes while the auto light switch is tur

ned on.

on.

More than 40°

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

• 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

Battery power indicator

• The flashing CHARGE indicator (C) at Level 3 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 (indicated by flashing CHARGE indicator ( configure any of the other settings until the battery reaches Level 2 (no CHARGE indicator) 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 higher than the actual battery level. The correct battery power indicator should appear after a few minutes.

• If you use the light or alarms a number of times during a short period, a RECOVER indicator ( until battery power recovers.

Backlight Beeper tone Coordination between digital and analog timekeeping Time calibration signal reception

After some time, battery power will recover and the RECOVER indicator will disappear, indicating that the above functions are enabled again.

Battery Po

vel

Indicator

Mid

2 3

Mid

) appears on the display and the following operations become disabled

Function Status

wer

All functions enabled.

All functions enabled. Auto and manual signal

Low

receive, alarm, hourly time signal, backlight, and display are disabled. Though the hands of the watch do not move, time continues to be kept internally. All functions, including

timekeeping, disabled.

) ) from Level 4. You will not be able to

Solar cell

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 5 months, while the watch is used under the conditions described below.

Operating Conditions

•

Watch is not exposed to light

•

1 backlight operation (1.5 seconds) per day

•

10 seconds of alarm operation per day

•

5 time calibration signal receptions 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.

Exposure Le

vel (Brightness)

Outdoor Sunlight (50,000 lux) Sunlight Through a Window (10,000 lux) Daylight Through a Window on a Cloudy Da

(5,000 lux) Indoor Fluorescent Lighting (500 lux)

Approximate Exposure

5 minu 24 minutes

48 minu

8 hours

tes

Time

• Stable operation is promoted by frequent charging.

Recovery Times

The table below shows the amount exposure that is required to take the battery from one level to the ne

Exposure Level (Brightness)

Outdoor Sunlight (50,000 lux)

Sunlight Through a Windo (10,000 lux)

Daylight Through a 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.

xt.

Window

Approximate Exposure Time

Level 4 Level 3 Level 2 Lev

▲

1 hour

3 hours

5 hours

45 hours

13 hours

66 hours

▲

– –

– – –

el 1

4 hours

18 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.

Power Saving Function

Power Saving indicator

Approximate Pe

in sleep state

3 to 4 da

ys or more

8 da

The sleep state is indicated by a blank screen with the Power Saving indicator (PS) flashing on it.

Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.

• • Even when the watch is in the sleep state, digital-analog time coordination and auto

signal receive are both performed.

To recover from the sleep state

Perform any one of the following operations.

• Move the watch to a well-lit area.

• Press any button.

• Angle the watch towards your face for reading.

When turned on, the Power Saving function automatically enters a sleep state whenever the watch is left in an area where lighting is dim (less than about 30 lux). The following shows how watch functions are affected

when left in a dark place while in the sleep state

riod

• LCD off

• Alarm, hourly time signal, analog timek

signal receive enabled

• LCD off, alarm and hourly time signal disabled

• Analog timekeeping stopped at 12 o’clock

• Auto signal receive disab

Functions

led

eeping and auto

▲

— 6 —

To turn Power Saving on and off

Auto Return Features

• If you leave the watch in the Alarm, Data Memory, or Hand Setting Mode for two or three minutes without performing any operation, it automatically returns to the Timekeeping Mode.

• If you leave the watch with a flashing setting or cursor on the display for two or three minutes without performing any operation, the watch automatically exits the setting screen.

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 World Time, Alarm, or Data Memory Mode, the data you were viewing when you last exited the mode appears first.

Time Calibration Signal Reception Precautions

• 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.

• Even if the time calibration signal is received properly, certain conditions can cause the time setting to be off by up to one second.

• 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, 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.

• 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.

• When all five auto receptions are successful (0:00 a.m., 1:00 a.m., 2:00 a.m., 3:00 a.m., and 4:00 a.m.), 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.

• 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 the date as kept in the Timekeeping Mode at the time of signal reception.

• If you are in an area where proper time calibration signal reception is impossible, the watch keeps time within 15 seconds a month at normal temperature.

• If you have problems with proper time calibration signal reception or if the time setting is wrong after signal reception, check your current city code, DST (summer time), and auto receive settings. The following are the initial factory defaults for these settings

Setting

City code DST (summer time)

Auto receiv

Timekeeping

• 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

• The day of the week is automatically displayed in accordance with the date (year,

• The year can be set in the range of 2000 to 2099.

• The watch’s built-in full automatic calendar makes allow ances for different month

• The current time for all city codes in the Timekeeping Mode and World Time Mode is

• GMT differential is calculated by this watch based on Universal Time Coordinated

* The letters “UTC” stands for “Universal Time Coordinated,” which is the world-wide scientific

without changing the minutes.

month, and day) settings.

lengths and leap years. Once you set the date, there should be no reason to change it except after you have the watch’s battery replaced or when battery power drops to Level 4.

calculated in accordance with the Greenwich Mean Time (GMT) differential for each city, based on your Home City time setting.

(UTC*) data.

standard of timekeeping. It is based upon carefully maintained atomic (cesium) clocks that keep time accurately to within microseconds. Leap seconds are added or subtracted as necessary to keep UTC in sync with the Earth’s rotation. The reference point for UTC is Greenwich, England.

1.In the Timekeeping Mode, hold down A until the city code starts to flash, which indicates the setting screen.

• The second hand will move at high speed to the 12

o’clock position, where it will stop.

2.Press A again.

3.Press C seven times until the Power Saving on/off screen appears.

4.Press D to toggle Power Saving on ( (

5.Press A to e

• The second hand will advance at high speed to the

correct position in accordance with the digital time seconds count, and resume normal movement from there.

• The Power Saving indicator (

modes while the Power Saving is turned on.

xit the setting screen.

Initial Factor

BER A

DST

ON R/C

y Default

(Berlin) (Auto switching)

(Auto receive)

) and off

) is on the display in all

12-hour/24-hour Timekeeping Formats

The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is also applied in all other modes.

• With the 12-hour format, the P (PM) indicator appears on the display for times in the range of noon to 11:59 p.m. and no indicator appears for times in the range of midnight to 11:59 a.m.

• With the 24-hour format, times are displayed in the range of 0:00 to 23:59. The indicator 24 indicates the 24-hour format.

Inputting Text

The following describes how to input text in the Data Memory Mode.

To input characters

Cursor

Data Memory Input Screen

Data Memory Management

Data memory can hold up to 315 characters total, while each record can contain up to 63 characters. This means that 40 records can be stored in data memory when each record contains seven characters of text or less.

Backlight Precautions

• The illumination provided by the backlight may be hard to see when viewed under direct sunlight.

• The backlight automatically stops illuminating whenever an alarm sounds.

• Frequent use of the backlight shortens the battery life.

Auto light switch precautions

• Wearing the watch on the inside of your wrist, as well as movement or vibration of your arm can cause the auto light switch to activate and illuminate the display. To avoid running down the battery, turn off the auto light switch whenever engaging in activities that might cause frequent illumination of the display.

More than 15 degrees too high

1.When the cursor is on the display, use B and D to cycle through the available letters, numbers and symbols, in the sequence shown below.

Press D.

(space)

(number)

2.When the character you want is at the cursor position, press C to move the cursor to the right.

3.Repeat steps 1 and 2 to input the rest of the characters you wa

nt.

• See the “Character List” for information about the

characters you can input.

• The backlight may not light if the face of the watch is

more than 15 degrees above or below parallel. Make sure that the back of your hand is parallel to the ground.

• The backlight turns off in about one second, even if you

keep the watch pointed towards your face.

• Static electricity or magnetic force can interfere with

proper operation of the auto light switch. If the backlight does not light, try moving the watch back to the starting position (parallel with the ground) and then tilt it back toward you again. If this does not work, drop your arm all the way down so it hangs at your side, and then bring it back up again.

• Under certain conditions, the backlight may not light until

about one second after you turn the face of the watch towards you. This does not necessarily indicate malfunction of the backlight.

• You may notice a very faint clicking sound coming from

the watch when it is shaken back and forth. This sound is caused by mechanical operation of the auto light switch, and does not indicate a prob

(lower-case)

Press B.

(upper-case)

lem with the watch.

(symbol)

City Code Table

City

Code

– – – HNL ANC

DEN

NYC CCS

– – – – –

GMT LON

BER

THR DXB

DAC RGN BKK

HKG

SYD NOU WLG

• Based on data as of June 2002.

LAX

CHI

RIO

PAR AT

CAI

JRS JED

KBL

KHI

DEL

TY SEL ADL

–

City

HONOLULU

ANCHORAGE

LOS ANGELES

DENVER

CHICAGO

NEW YORK

CARACAS

RIO DE JANEIRO

LONDON

PAR IS

BERLIN

ATHENS

CAIRO

JERUSALEM

JEDDA

TEHRAN

DUBAI

KAB

KARACHI

DELHI

DHAKA

YANGON

BANGKOK

HONG K

TOKY SEOUL

ADELAIDE

SYDNEY NOUMEA

WELLINGTON

ONG

GMT

Differential

– –10 –9

–

–7 –6

–5 –4 –

3 2

– –1

+0 +1

+3 +3.5

+4 +4.5 +5 +5.5 +6 +6.5 +7

+8 +9

+9.5 +10 +11 +12

Other major cities in same time zone

PAGO PA PAPEETE NOME SAN FRANCISCO, LAS VEGAS, VANCOUVER, SEATTLE, DAWSON CITY EL PASO, EDMONTON HOUSTON, DALLAS/FORT WOR NEW ORLEANS, MEXICO CITY, WINNIPEG MONTREAL, DETROIT, MIAMI, BOSTON, PANAMA CITY, HAVANA, LIMA, BOGOTA LA PAZ, SANTIAGO, PORT OF SPAIN SAO PAULO, BUENOS AIRES, BRASILIA, MONTEVIDEO

PRAIA DUBLIN, LISBON, CASABLANCA, D ABIDJAN MILAN, ROME, MADRID, AMSTERDAM, ALGIERS, HAMBURG, FRANKFURT, VIENNA, STOCKHOLM HELSINKI, ISTANBUL, BEIRUT, DAMASCUS,

CAPE TO KUWAIT, RIYADH, ADEN, ADDIS ABABA, NAIROBI,

MOSCO

W SHIRAZ ABU DHABI, MUSCA

MALE MUMBAI, KOLKATA COLOMBO

JAKARTA, PHNOM PENH, HANOI, VIENTIANE SINGAPORE, KUALA LUMPUR, BEIJING, TAIPEI, MANILA, PERTH, ULAANBAATAR PYONGYANG

DARWIN MELBOURNE, GUAM, RABAUL PORT VILA CHRISTCHURCH, NADI, NAUR

TH,

AKAR,

U ISLAND

— 7 —

Character List

(space)

i j

n o p q

–

s t

–

_ @

/ ? # !

e X

–

— 8 —

3. DRAWINGS: MODULE QW-2727/2730 3-1. LCD DIAGRAM: MODULE QW-2727/2730

SEG.

COM.

L 4 L 5 L 6 L 7 L 8

L 9 L10 L11 L12 L13 L14 L15 L16 L17

a_light

x3 x4 x5x0 x1 x2

L30

L29

L28

L27

L26

L25

L24

LC1 LC2 LC3 LC4

x22y0 x21y0 x20y0 x19y0 x18y0 x17y0 x16y0 x15y0 x14y0 x13y0 x12y0 x11y0 x10y0

x9y0

x22y1 x21y1 x20y1 x19y1 x18y1 x17y1 x16y1 x15y1 x14y1 x13y1 x12y1 x11y1 x10y1

x22y4 x21y4 x20y4 x19y4 x18y4 x17y4 x16y4 x15y4 x14y4 x13y4 x12y4

snz

x10y4

x9y4

L23

x9y1

high clow r ps

col1

hyp

col0

L22

L21

L20

L19

x22y2 x21y2 x20y2 x19y2 x18y2 x17y2 x16y2 x15y2 x14y2 x13y2 x12y2 x11y2 x10y2

x9y2

mid

x6 x12 x13 x17 x18

dstsnzsigalm

L18

L17

L16

L15

L14

L13

L12

L11

COM.

LC5 L30

SEG.

x22y3 x21y3 x20y3 x19y3 x18y3 x17y3 x16y3 x15y3 x14y3 x13y3 x12y3 x11y3 x10y3

LC1 LC2 LC3 LC4 LC5

x8y4

L18

x11y4

L19

x6y4

L20

x5y4

L21 L22 L23 L24 L25 L26 L27

high x3y4 x2y4

x0y4

mid L28 L29 L31

dst

L10

x8y0

sig x6y0 x5y0

alm x3y0 x2y0

x0y0

a_light

rc0

x8y1 x7y0 x6y1 x5y1 x4y0 x3y1 x2y1 x1y0 x0y1

col0

rc1

x22

L6L5L4

x9y3

x8y2 x7y2 x6y2 x5y2 x4y2 x3y2 x2y2 x1y2 x0y2

hyp

rc2

rc1

rc0

L31

LC1

LC2

LC3

LC4

LC5

x8y3 x7y4 x6y3 x5y3 x4y4 x3y3 x2y3 x1y4 x0y3

col1

low/c

— 9 —

3-2. CIRCUIT DIAGRAM: MODULE QW-2727

✽ 13✽

✽

FET

✽

Rant3

Rant1

Crl3

Crl2

Crh3

Crh1

Crl1

Crh2

✽

ANT

✽

Rant2

REG

IN1 1

Creg

IN2 PON 2

AGC

VCC 3

Cagc

FIL1

OUT1 4

Cf13

FIL2

OUT2 5

✽

Cf12

Rxt3

Rxt2

TCO

GND 6

Cxt

Xtal3

Xtal2

Rpd

✽

HOLD

REC 7

Rcp

DEC2

DEC1 8

Ccp9

Cbat

Rbat

✽ 8. L28~L30 are used as static drive pins.

✽ 9. Motor drive pins are used in this module (01, 02, 03).

✽ 10. Normal Low

✽ 11. LD2 (Normal Low) is used in this module.

✽ 12. LD3 (Normal High) is used in this module.

✽ 13. Not shorted (Soldering) in this module.

✽ 14. Rant1, Rant3, FET , Rs, Rd, Cc, Crl1, Crl2, Crl3, Rxt3,

Xtal3, Rant2, and Rpd are not used in this module.

RP1RP2

SCR

SCIN

✽

SDO SCK CSB

✽

SDI

✽

L32 - - L36

L37 - - - L55

An.B2

An.B1

✽

L4 - - - L31 LC1 - - - LC5

✽

L1 L2 L3

T1T2T3

LCD ( 2.8V 1/3b 1/5d )

Tr3

RPM

KC4

KC1

KC3

✽

XTB

Xtal

VDD1

VDSP

VCH VDD3 VC1 VC2

VHF

VC3 VC4

Di2

GND VDD2

VSC

✽

LD1

LL1

Tr1

PZ Z

✽ 1. No bonding

✽ 2. GND-KI6: Open (No Soldering)

GND-KI7: Open (No Soldering)

GND-KI8: Short (Soldering)

✽ 3. Latch type key

✽ 4. Short (Soldering) (R trimming)

✽ 5. Inclination sensor

✽ 6. Short (Soldering) (N trimming)

✽ 7. GNDB is used for the bias on the back of the tip.

BAT

Di1

SCC9

LED3

LED2LED1

Tr2

✽

GNDB

VPM

KC2

✽

LSI

TOTAL 106PINS

BONDING 84PINS

KI1

KI2

✽ 3✽

KI3

KI4

KI5

KI6

✽

✽ 2✽

✽ 3✽ 3✽ 3✽ 3✽

✽

KI7

KI8

KI9

✽ 2✽ 6✽ 6✽ 4✽ 4✽

— 10 —

MODULE QW-2730

Crl2

Crh3

Crh1

RP1RP2

SDO SCK CSB

SDI

FET

SCR

✽

Rant3

Crl3

Crl1

Crh2

SCIN

✽

Rant1

ANT

✽

Rant2

REG

IN1 1

Creg

IN2 PON 2

VPM

RPM

AGC

VCC 3

Tr3

Cagc

FIL1

OUT1 4

Cf13

✽

KC2

FIL2

OUT2 5

Cf12

Rxt3

Rxt2

Rpd

Rcp

✽

Ccp9

KC1

Xtal3

Xtal2

HOLD

REC 7

DEC2

DEC1 8

KC3

✽

KC4

VDD1

VDSP

VCH VDD3 VC1 VC2

VHF

Cbat

Rbat

✽ 8. L28~L30 are used as static drive pins.

✽ 9. Motor drive pins are used in this module (01, 02, 03).

✽ 10. Normal Low

✽ 11. LD2 (Normal Low) is used in this module.

✽ 12. LD3 (Normal High) is used in this module.

✽ 13. Short (Soldering) in this module.

Short (Soldering) after tuning ANT when mounting ANT

tuning condensor on the PCB.

✽ 14. Rant1, Rant2, Rant3, and Rpd are not used in this module.

TCO

GND 6

Cxt

✽

L32 - - L36

L37 - - - L55

An.B1

✽

L4 - - - L31 LC1 - - - LC5

✽

L1 L2 L3

T1T2T3

LCD ( 2.8V 1/3b 1/5d )

An.B2

LSI

TOTAL 106PINS

BONDING 84PINS

✽

✽ 3✽ 3✽ 3✽ 3✽ 3✽ 3✽ 3✽ 3✽

KI1

KI2

KI3

KI4

KI5

KI6

KI7

✽

✽ 2✽

KI8

KI9

✽ 2✽ 6✽ 6✽ 4✽ 4✽

XTB

Xtal

— 11 —

VC3 VC4

LL1

Tr1

Di2

GND VDD2

Di1

VSC

✽

LD1

PZ Z

✽ 1. No bonding

✽ 2. GND-KI6: Open (No Soldering)

GND-KI7: Open (No Soldering)

GND-KI8: Open (No Soldering)

✽ 3. Latch type key

✽ 4. Short (Soldering) (R trimming)

✽ 5. Inclination sensor

✽ 6. Short (Soldering) (N trimming)

✽ 7. GNDB is used for the bias on the

back of the tip.

BAT

SCC9

Tr2

LED3

LED2LED1

✽

GNDB

3-3. CHECKING TERMINALS AND COMPONENTS: MODULE QW-2727

Diode

Di1

6. Sensor/Tilt (7105 5275)

Capacitor/Chip

Creg

Capacitor/Chip

Cagc

Transistor

Rcp

Transistor

Rbat

Capacitor/Chip

5. Oscillator/

Xtal1

Crystal

(7110 0715)

GND

K11

VDD2

LED2

K14

GND

VDD2

VSC

GND

SCIN

GND

VSC

SCIN

GND

SCR

GND

VSC

VCH

VDSP

GND

SCIN

SCINVSC

GND

SDO

Rcp

KI8GNDKI6GND

GND KI7

GND

3. PCB ASS'Y (7640 6322)

VDD2

Rcp

GND

1416

GND

VHF

GND

VDD2

VDD3

VDD1

GND

XTB

GND

GNDB

KI3

GND

VDD2

LED1

KI2

GND

LED3

VDD2

Xtal3

KI3

VC3

VC2

VC4

GND

KI2

LED1

Capacitor/Chip

GND

Xtal3

VC1

GND

VC1

GND

LED3

R4 VPM

Capacitor/Chip

Cbat

Capacitor/Chip

Cxt

21S

KI9

234

GND

121314

16 1

KI9

KC3

KC4

Cmos

Oscillator/Crystal

Xtal2

LL1

1616

S1122

GND

Xtal2

VDSP

VDD2

Coil

VCH

LL1

LD1

VDD2

KI5GND

KI5

GND

LL1 GND

VDD2

LL1

GND

LD1

GND

KC2GND

VSC

K14

K11

VDD2

K14

Cf12

Capacitor/Chip

Ccp9

Capacitor/Chip

Cf13

Capacitor/Chip

Resistor/Chip

RP1

Capacitor/Chip

Resistor/Chip

RP2

Capacitor/Chip

Resistor/Chip

Top view of P.C.B. ass'y Bottom view of P.C.B. ass'y

LED3

Resistor/Chip

Capacitor/Chip

Rxt2

Resistor/Chip

RPM

Resistor/Chip

4. Capacitor/Trimmer

(1001 0950)

— 12 —

Tr3

Transistor

Tr1

Resistor/Chip

Tr2

Varistor

Transistor

Diode

Di2

Transistor

Resistor/ Chip

MODULE QW-2730

Diode

Di1

6. Sensor/Tilt (7105 5275) Capacitor/Chip

Transistor

FET

Resistor/Chip

Capacitor/Chip

Creg

Capacitor/Chip

Cagc

Capacitor/Chip

Ccp9

Transistor

Rcp

Transistor

Rbat

Capacitor/Chip

GND

K11

VSC

GND

VDD2

GND

SCIN

GND

VSC

LED2

SCIN

LED2

GND

SCR

GND

K14 K14

VSC

VCH

VDSP

GND

VDD2

GND

SCIN

3. PCB ASS'Y

GND

(7640 6222)

SDO

Rcp

KI8GNDKI6GND

GND KI7

GND

VDD2

Rcp

GND

1416

GND

VHF

GND

VDD2

VDD3

VDD1

GND

XTB

GND

GNDB

GND

LED3

VDD2

KI3 KI3

VDD2

LED1

KI2

Capacitor/Chip

Xtal3

VC3

VC4

GND

KI2

VC2

VC1

LED1

R4 VPM

Oscillator/Crystal

Resistor/Chip

Rxt3

Cbat

GND

LED3

Xtal3

KI9

VC1

GND

Capacitor/Chip

Cxt

Detection IC

Xtal2

21S

234

GND

KI9

KC3

121314

1616

16 1

KC4

Oscillator/Crystal

Resistor/Chip

Coil

LL1

S1122

GND

Xtal2

VDSP

VDD2

VCH

GND

LL1 GND

LL1

KC2GND

LD1

VDD2

KI5GND

GND

VSC

K14

KI5

VDD2

GND

LD1

K11

VDD2

Capacitor/

Chip

Resistor/

RP1

Chip

Capacitor/Chip

Resistor/Chip

RP2

Capacitor/Chip

Resistor/Chip

Cf13

Cf12

Capacitor/Chip

Top view of P.C.B. ass'y Bottom view of P.C.B. ass'y

3-4. N1, N2, R1 ~ R3 PADS

Never solder or desolder these pads, because they have been selected best in the production line. A new PCB ass'y as a spare parts will be supplied with factory adjustment of these pads.

LED3

Xtal

Capacitor/Chip

Resistor/Chip

Capacitor/Chip

5. Oscillator/ Crystal

(7110 0715)

— 13 —

Resistor/

Rxt2

Chip

Tr3

Transistor

Tr1

Resistor/Chip

RPM

Resistor/Chip

4. Capacitor/Trimmer (1001 0950)

Tr2

Varistor

Transistor

Diode

Di2

Transistor

Resistor/

Chip

4. EXPLODED VIEW: MODULE QW-2727/2730

23 (1010 6520)

28 (7227 0294) 7 (7640 6260)

18 (1010 6517)

14 (1010 6506) 29 (7235 0913)

27 (1010 6508)

2 (1010 6522)

24 (1010 6509)

1 (1010 3493)

17 (1010 6516) 19 (1010 6519)

11 (1002 7903) 26 (7201 9249)

25 (1010 6510)

15 (1010 6521)

3a (7640 6322) 3b (7640 6222)

PCB ass'y

12 (7231 1777) 21 (1012 3230)

16 (1010 6512)

(1013 4221)

13 (1011 7191)

8 (1006 5657) Battery Storage (CTL1616)

— 14 —

ANALOG BLOCK: MODULE QW-2727/2730

9 (1010 3617)

20 (7228 0511)

10 (1010 3618)

— 15 —

5. PARTS LIST: MODULE QW-2727/2730

(-)

Note: 1. Prices and specifications are subject to change without prior notice.

2. Spare parts are classified as follows according to their importance in after-sales service. A Rank ------------------------------B Rank ------------------------------C Rank -------------------------------

3. Batteries in Bulk pack on the tray will be supplied from our Overseas Spare Parts Section under charge basis.

Batteries in Blister pack will be supplied from our Sales Department.

4. As for order/supply of spare parts, refer to the separate publication "GUIDE BOOK for spare parts supply".

Item Code No. Parts Name Specification Applicable Q R

1010 9022 MODULE/WITH MOVEMENT QW-2727YCSA-01 WVA-400D-1A1V/1A2V 1 A 1010 5754

1 1010 3493 LCD C2730-01 QW-2727YCSA/2730YCSA Common 1 A 2 1010 6522 LED LNJ411K830CS QW-2727YCSA/2730YCSA Common 2 A

3a 7640 6322 PCB ASS'Y Q256086*1TK QW-2727YCSA-01 1 A

7640 6222 PCB ASS'Y Q255907*1TK QW-2730YCSA-01 1

4 1001 0950 CAPACITOR/TRIMMER CTZ2E-30C-W2-P QW-2727YCSA/2730YCSA Common 1 B

7110 0715 OSCILLATOR/CRYSTAL DT-26SF

5 6 7105 5275 SENSOR/TILT TS-2418-P QW-2727YCSA/2730YCSA Common 1 B 7 7640 6260 ANALOG BLOCK QW-2730MV-82TK QW-2727YCSA/2730YCSA Common 1 A 8 1006 5657 BATTERY/STORAGE CTL1616 QW-2727YCSA/2730YCSA Common 1 B

9 1010 3617 COIL ASS'Y Q371418*1 QW-2727YCSA/2730YCSA Common 1 A 10 1010 3618 COIL ASS'Y Q371419*1 QW-2727YCSA/2730YCSA Common 1 A 11 1002 7903 CONTACT/BATTERY 12 7231 1777 HOLDER 1381 Q456843-1 QW-2727YCSA/2730YCSA Common 1 C 13 1011 7191 HOLDER/BATTERY Q255819B-2 QW-2727YCSA/2730YCSA Common 1 C 14 1010 6506 HOLDER/HOUR WHEEL Q372164-1 QW-2727YCSA/2730YCSA Common 1 C 15 1010 6521 INTERCONNECTOR Q470505-1 QW-2727YCSA/2730YCSA Common 1 C 16 1010 6512 LABEL Q471007-1 QW-2727YCSA/2730YCSA Common 1 C 17 1010 6516 LIGHT GUIDE Q372165-1 QW-2727YCSA/2730YCSA Common 1 C 18 1010 6517 LIGHT GUIDE Q372166-1 QW-2727YCSA/2730YCSA Common 1 C 19 1010 6519 REFLECTOR Q470501A-1 QW-2727YCSA/2730YCSA Common 1 C 20 7228 0511 SCREW Q422638-1 QW-2727YCSA/2730YCSA Common 3 B 21 1012 3230 SCREW RJQ513792-001V01 QW-2727YCSA/2730YCSA Common 3 B 22 1013 4221 SHEET/INSULATION RJQ515739-001V01 QW-2727YCSA/2730YCSA Common 1 C 23 1010 6520 SOLAR CELL BCS2926D5 QW-2727YCSA/2730YCSA Common 1 C 24 1010 6509 SPRING/COIL Q470503-1 QW-2727YCSA/2730YCSA Common 3 B 25 1010 6510 SPRING/COIL Q470504-1 QW-2727YCSA/2730YCSA Common 4 B 26 7201 9249 SPRING/COIL 675-3 Q413389A-1 QW-2727YCSA/2730YCSA Common 1 B 27 1010 6508 SPRING/LEAF Q372167-1 QW-2727YCSA/2730YCSA Common 1 C 28 7227 0294 WASHER/745 Q436294A-1 QW-2727YCSA/2730YCSA Common 1 C 29 7235 0913 WHEEL/HOUR 2315 Q364087B-1 QW-2727YCSA/2730YCSA Common 1 B

MODULE/WITH MOVEMENT

Very Important Important Less important

QW-2730YCSA-01 WVA-400DJ-1A1/1A2/9A 1

WVA-400TDJ-1A/9A

QW-2727YCSA/2730YCSA Common 1 A

Q39603B-1 QW-2727YCSA/2730YCSA Common 1 C

For the

Notes: Q - Used quantity

rices and minimum order/supply quantities of the above parts, refer to the Parts Price List P.P.L.-595.

R - Rank

— 16 —

6. PRECAUTIONS FOR REPAIR: MODULE QW-2727/2730 6-1. AC (ALL CLEAR) AND REMOVING OF MODULE

1. Perform AC (ALL CLEAR) when inserting a new battery, or else the memories and/ or counters may give

erratic displays. Touch the AC contact and the main plate with the metallic tweezers. The contact should be made for about two seconds.

2. On removing of the module from the case, please insert the precision screw driver between the module

and the case pointed by arrows.

6-2. ACCURACY CHECKING

Check the accuracy of the module with the quartz timer after switching the module to “ACCURACY CHECKING MODE”.

The operations are shown below: A) SWITCHING TO “ACCURACY CHECKING MODE”

While pressing the D button, press A and C buttons at the normal timekeeping mode. Then all the segments are displayed and the LCD drive signals are changed to the static drive signal of “32 Hz” so that you can check the accuracy with the quartz timer.

B) CANCELLATION OF THE “ACCURACY CHECKING MODE”

Press any button. Then the display is returned to its original state.

NOTE: The “ACCURACY CHECKING MODE” will

automatically return to the regular mode in 1 ~ 2 hour(s) without any operation.

— 17 —

QW-2727/2730

ALM SIG SNZ DST

6-3. SOLAR CELL-PCB ASS'Y CONTACT CHECKING

ALM SIG SNZ DST

Check a Solar cell and PCB ass'y are contacted correctly by contact spring, when a module is disassembled.

1. To enter TEST mode.

1) While pressing D button, press A and B buttons at the normal timekeeping mode.

2. Check a Solar cell and PCB ass'y contact in the following order.

1) Display side up and place the watch on the desk.

2) Check the display indicates as figure 2.

3) Display side down and place the watch on the desk more than two seconds. Or go to a dark room and place the watch more than two seconds.

4) Check the display indicates as figure 3. If "88" is not appeared on the display, disassemble again the module and check the contact spring between the Solar cell and PCB.

Press D, A and B buttons

Figure 1

Appear "88" on display.

3. To exit from TEST mode Press any button.

6-4. HOW TO CHECK TILT SENSOR

1) Press A, B and C buttons at the normal timekeeping mode.

2) Check the display indicates as figure 4.

3) Tilt the watch towards you more than 40 degrees.

4) Check the display indicates as figure 5.

Figure 2

Place the watch in a dark room more than two seconds.

Figure 3

Figure 4 Figure 5

Appear "TLT" on display.

Tilt the watch towards you more than 40°

— 18 —

Appear "88" on display.

More than 40°

7. TROUBLESHOOTING: MODULE QW-2727/2730

This is a flow chart about signal reception.

START

Check whether the Home City

code is selected correctly.

To perform MANUAL time

calibration signal reception

Signal

reception OK?

To perform AUTO time

calibration signal reception

Signal

reception OK?

Replace the PCB ass'y

Signal

reception OK?

Yes

Replace the Case center

ass'y with antenna

Yes

Signal

reception OK?

There is a possibility of location bad.

— 19 —

Ver. 1 : Correction of page 14, and 16

CASIO TECHNO CO.,LTD.

Overseas Service Division

Shibuya-ku, Tokyo 151-8543, Japan

6-2, Hon-machi 1-Chome

Casio WVA-400D, WVA-400DJ, QW-2727, QW-2730 Service Manual And Parts List

Specifications and Main Features

Frequently Asked Questions

User Manual