Casio WV-54DA, QW-2510 Service Manual & Parts List

Download

Page 1

SERVICE MANUAL

& PARTS LIST

REF. NO. S/M-768

MAR. 2002

MODULE NO.

QW-2510

WV-54DA

(WITHOUT PRICE)

Page 2

CONTENTS

Page

1. SPECIFICATIONS: QW-2510..................................................................... 1

2. OPERATION CHART: QW-2510................................................................ 2

3. DRAWINGS: QW-2510

3-1. LCD DIAGRAM ...................................................................................6

3-2. CIRCUIT DIAGRAM ............................................................................ 7

3-3. CHECKING TERMINALS AND COMPONENT .................................. 8

4. EXPLODED VIEW: QW-2510..................................................................... 9

5. PARTS LIST: QW-2510.............................................................................10

6. PRECAUTIONS FOR REPAIR: QW-2510

6-1. AC (ALL CLEAR) AND REMOVING OF MODULE ........................... 11

6-2. ACCURACY CHECKING ................................................................... 11

Page 3

1. SPECIFICATIONS: QW-2510

Item Detail

Battery CR2016 Battery life Approx. 2 years Current consumption 1.98 µA maximum Alarm system Piezo plate on Back cover Accuracy ±15 sec./month Accuracy setting system Trimmer capacitor Accuracy checking See page 11 Functions • Electro-luminescent backlight

Afterglow

• Time calibration signal reception Auto receive (2:00AM, 4:00AM, and 6:00AM) Manual receive Last date/time received display

• Time Calibration Signal Call sign: DCF77 (Mainflingen, Germany) Frequency: 77.5 kHz Range: Approximately 1,000 km

• e-DATA MEMORY Memory capacity: Maximum Number of Records: 40 (7 characters per record) Minimum Number of Records: 5 (63 characters per record) Input: Variable length Others: Remaining memory indicator

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

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

• Daily alarm 5 independent daily alarms Silent alert Rminder message display Snooze feature for one alarm only (10-sec. alarm; up to 7 repeats at intervals of approximately 5 min.)

• Hourly time signal

• Auto-calendar (to year 2039)

• 12/24-hour format

• Regular timekeeping: Hr, min, sec, pm, month, date, day

— 1 —

Page 4

2. OPERATION CHART: QW-2510

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.

• Pressing A displays the Last Signal screen (date and time the time calibration signal was last received) in the Timekeeping Mode.

Month – Day

PM indicator

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 the Continental United States, first use the procedure under “Setting Up the Watch for Use in the Continental United States” on the next page 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.

• Before using the watch in Japan, first specify your Home City, select the DST setting you want to use, and then perform the procedure under “To perform manual time calibration signal reception” .

Setting Up the Watch for Use in the Continental United States

You need to make the following three settings before using this watch in the Continental United States. 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 the Continental United States

GMT differential

Receive indicator (E-14)

If the watch is indoors, we recommend that you place the watch near a window to allow better signal reception. After signal reception is complete, the display of the watch changes to the Last Signal screen.

Hour : Minutes

City code

Receive indicator

Day of week

Press A.

▲

Seconds

Receive indicator

1. In the Timekeeping Mode, press B. This causes the current auto receive on/off setting (the receive indicator) to flash, which indicates the setting screen.

2. Press C twice to move the flashing to the city code setting.

3. Use D(+) and A(–) to select the city code you want to use as your Home City .

• The following are the city codes for major cities in

the Continental United States time zones. LAX: Los Angeles, San Francisco, Las Vegas, Seattle

DEN: Denver, El Paso CHI: Chicago, Houston, Dallas/Fort Worth, New

Orleans NYC: New York, Detroit, Miami, Boston

4. Press C to display the summer time (DST) setting screen.

5. Use D to select A UTO DST.

• AUTO DST specifies auto switching between

Daylight Saving Time and Standard Time.

6. Press B to exit the setting screen.

7. Hold down A for about two seconds until the watch beeps.

• Release A and the message receiving appears to

indicate 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.

Last Signal Screen

Receive date Receive time

Alarm Mode

▲

Data Memory

▲

Mode

Stopwatch Mode

▲

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 three times each day and makes appropriate adjustments. With Manual Receive, you perform a specific button operation to receive the calibration signal. Before performing a signal receive operation, remove the watch from you wrist and position it as shown in the illustrations below.

• If your watch has a resin band, pass the end of the band through the band loop and place the watch on a stable surface.

Resin band Metal band

Pass through band loop.

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 a city code that supports signal reception is selected as the Home City code.

• 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

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

the general direction of the signal transmitter.

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

2.In the Timekeeping Mode, hold down A for about two seconds until the watch beeps.

• Release A and the message receiving appears to

indicate 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.

Receive indicator

Note

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

• If the receive operation is unsuccessful, the message ERROR! 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 ERROR! screen to the normal timekeeping screen by pressing A.

About the Receive Indicator

The receive 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.

Weak

• 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.

• The receive indicator indicates that the calibration time reception attempt was successful.

Strong

— 2 —

Page 5

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, 4:00 AM and 6:00 AM each day (calibration times).

Note

• The auto receive operation is performed only if the watch is in the Timek eeping or World Time Mode when one of the calibr ation 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), while an alarm is sounding, or while a silent alert operation is being performed.

• 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 receive indicator indicates that either the 2:00 AM, 4:00 AM, or 6:00 AM calibration signal reception was successful. Note, however, that the receive indicator is cleared from the display at 3:00 AM each day.

• If you do not see the receive indicator 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 .

• 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, 4:00 AM and 6:00 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, 4:00 AM and 6:00 AM, regardless of whether or not the Timekeeping Mode time is actually the correct time.

• When two or three 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

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

Auto

Receive

Day

1.In the Timekeeping Mode, press B. This causes the current auto receive on/off setting (the receive

indicator) to flash, which indicates the setting

screen.

2.Press D to toggle auto receive on (ON) and off (OFF).

3.Press B to exit the setting screen.

1.In the Timekeeping Mode, press B. This causes the current auto receive on/off setting (the receive indicator) to flash, which indicates the setting screen.

2.Press C to move the flashing in the sequence shown below to select other settings.

Frequency

City Code

Year Minutes Hour

Month

DST

12/24-Hour Format

Seconds

World Time

GMT

City code

differential

Current time in the selected city code

To view the time in another city code

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

• 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 Timekeeping Mode’s Home City code time.

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 Table” at the back of this manual.

• 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 by pressing C.

1.In the World Time Mode, use A and D to display

the city code (time zone) whose standard time/ Daylight Saving Time setting you want to change.

2.Press B 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.

Alarms

Alarm on indicator

Alarm screen name/ Reminder text

Alarm time Alarm name indicator

To display Alarm Mode screen

In the Alarm Mode, use D to cycle through the alarm screens as shown below.

ALARM1

The Alarm Mode gives you a choice of four one-time alarms and one snooze alarm. You can select either an audible beeper or flashing silent alert to let you know when any of the alarm times is reached. You can also input reminder text that appears when the alarm time is reached. Also use the Alarm Mode to turn the Hourly Time Signal on and off.

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

ALARM2

ALARM3 ALARM4

SNOOZE

SIGNAL

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

Auto Receive

Frequency

City code

DST

12/24-Hour format

Hour, Minutes Seconds

Month, Day, Year

4.Press B 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 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.

ScreenSetting

Button Operations

Press D to toggle auto receive on and off.

When TYO (Tokyo) is selected as the city code, press D to toggle the calibration signal reception frequency among Auto (FREQ. AT), 40KHz (FREQ. 40) and 60KHz (FREQ. 60). Note that frequency selection is available for the TYO city code only.

Use D (+) and A (ñ) to change the setting.

Press D to toggle between Daylight Saving Time (ON) and standard time (OFF).

Pressing D performs a different operation

when HKG, TYO, SEL, NYC, CHI, DEN, LAX, ANC or HNL 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. Use D (+) and A (–) to change the

setting. Press D to reset the seconds to 00. Use D (+) and A (–) to change the

setting.

Alarm1 Alarm2 Alarm3 Alarm4 Snooze

To set an alarm

• Selecting the text causes the text input cursor to appear. You can input up to eight characters of reminder text for each alarm.

• There are eight spaces in the text, so you have to press C eight times to move to the Hour setting.

4. When the setting you want to change is selected, use A and D to change it.

• While the hour or minute setting is flashing, use D (+) and A (–) 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).

• When inputting text, use A 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.

5.Press B to exit the setting screen.

• If you input reminder text, the text appears in place of the alarm screen name when you exit the setting screen.

• If the reminder text has more than six characters, it will scroll from right to left whenever it is displayed.

The following alarm screen names appear in the center of the display to indicate the alarm whose screen is currently displayed.

ALARM1 through ALARM4: One-time alarm screen SNOOZE: Snooze alarm screen SIGNAL: Hourly Time Signal screen

The currently displayed alarm screen is also indicated by the alarm name indicators along the bottom left of the watch’s display.

1.In the Alarm Mode, use D to select the alarm whose time you want to set.

2.Press B and the hour setting of the alarm time starts to flash, which indicates the setting screen.

• Pressing A and D at the same time resets the

alarm time to 12:00 AM, and clears the reminder text in the upper part of the display (if there is any).

3.Press C to move the flashing in the sequence shown below to select other settings.

MinutesHour

Text

— 3 —

Page 6

Alarm Operation

The following table describes the different types of alarm operations that this watch can perform.

Alarm on indicator

Snooze indicator

• Press any button to stop the alarm after it starts to sound.

• If any alarm operation (one-time alarm, silent alert, snooze) occurs while a

signal receive operation is in progress, the receive oper ation is canceled.

• In the case of the snooze alarm, the alarm operation repeats up to seven times every five minutes until the alarm is turned off.

• If you input reminder text for an alarm, the text appears for one minute in place of the date on the Timekeeping Mode screen. The text is cleared from the Timekeeping Mode screen if you change to another mode while it is displayed.

• Alarm operations and the Hourly Time Signal operation are performed in all modes. See page about selecting the alarm operation type.

To test the alarm

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

To select the alarm operation type

1.In the Alarm Mode, use D to select the screen for the alarm (ALARM1 to

ALARM4, or SNOOZE) whose alarm type you want to select.

2. Press A to cycle through the available settings in the sequence shown below.

• The alarm on indicator ( ) and alarm name indicator are displayed for each alarm (1 through 4, snooze) for which alarm on is selected. The alert on indicator

( ) and alarm name indicator are displayed for each alarm (1 through 4,

snooze) for which alert 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.

• In all modes, the alarm on indicator or alert on indicator is shown for any alarm (ALARM1 through ALARM4, or SNOOZE) that is currently turned on.

To turn the Hourly Time Signal on and off

Alert on indicator

Alarm Operation

Type

Alarm off Alarm on

Alert on

Alarm onAlarm off

1.In the Alarm Mode, use D to select the Hourly Time Signal (SIGNAL).

2.Press A to toggle it on (SIG displayed) and off (SIG not displayed).

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

on the display in all modes while this function is turned on.

Description

• Nothing happens when the alarm time is reached.

• The alarm on indicator and alarm name indicator flash on the display for 10 seconds.

• The watch beeps for 10 seconds.

• The alert on indicator and alarm

name indicator flash on the display for 10 seconds.

• The watch does not beep.

Alert on

Data Memory

You can use the watch’s data memory to store e-mail

Remaining memory

To create a new data record

Cursor

Text

Record number

addresses, Web page URLs, and other text 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 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 information.

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

same time to display the remaining memory screen.

• Y ou do not ha v e to perform the above step if the remaining memory screen is already on the display.

• If REST 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.Press B and the flashing cursor appears on the display, which indicates the setting screen.

3.Use A 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 right.

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

• The message SAVE! appears for about two

seconds, followed by a data memory record screen, which shows the text you just input in the upper part of the display, and a record number automatically assigned by the watch in the lower part of the display.

• While the record number is in the lower part of the

display, you can see only six characters of the text in the record. You can scroll through the text on the screen by pressing D. See “To recall data memory records” on the next page for more information.

To recall data memory records

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

• Each press of A advances to the next record and shows its record

number and first six characters of its text.

• Pressing A while the last record in memory is on the display changes to

the remaining memory screen. Pressing A again displays the first record.

2.Press D to scroll through the text on the screen.

First six characters

▲

Pressing D scrolls through the text.

End mark

▲

• An end mark indicates the end of the text.

To edit a data memory record

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

2.Press B and 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 A to change the character.

5.After making the changes you want, press B 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.Press B and the flashing cursor appears on the display.

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

• The message CLEAR! 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 B to return to the remaining memory screen.

Stopwatch

Seconds

1/100 second

Hours

Minutes

To measure times with the stopwatch

Elapsed Time

Start Stop

Split Time

Start Split

Two Finishes

Start Split

➤

(SPL displayed)

➤

First runner finishes. Display time of first runner.

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

• 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.

➤

Re-start Clear

➤

Split release

➤

Stop

Second runner finishes.

➤

Stop

➤

Stop

➤

Split release

Display time of second runner.

➤

Clear

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 Alarm or Data Memory 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 A 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.

— 4 —

Page 7

Time Calibration Signal Reception

• This watch is designed to receive a time calibration signal originating from one of the three transmitters listed below.

Location

Call Sign

Fort Collins, Colorado Fukushima, Japan Fukuoka/Saga, Japan

• When you select one of the city codes shown below as your Home City code, the watch sets up automatically to receive from the applicable transmitter. Time calibration signal reception is not possible whenever any other city code is specified as the Home City code.

• When you select TYO as your Home City code, the watch automatically selects either the Fukushima signal (40kHz) or the Fukuoka/Saga signal (60kHz), depending on which is stronger.

Home City Code

LAX, DEN, CHI, NYC

TYO

• Note that when TYO (Japan) is selected as the Home City code, y ou can specify one of two different time signal transmitters.

1,200 miles

• Signal reception is possible within a radius of about 2,000 miles (3,000 kilometers) from the Fort Collins transmitter.

• At distances further than about 500 kilometers from the Fukushima and Fukuoka/Saga transmitter, the signal may become weak and reception may be impossible under certain conditions.

General Precautions

• 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.

• 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.

• 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.

• Think of the watch as acting like a TV or radio when it is receiving the calibration signal. When receiving indoors, move to a location as near as possible to a window.

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

Near TVs, refrigerators, computers, or other household appliances Far away from broadcasting stations among ferro-concrete structures or near mountains Underground, in tunnels or in ferro-concrete buildings Near high-tension wires, neon signs, or radio stations with interfering frequencies Near railroads, highways or airports In trains or cars

• Radio interference can make signal reception impossible.

• Strong electrostatic charge can result in the wrong time being set.

• If you are in an area where proper time calibration signal reception is

impossible, the watch keeps time with the precision noted in “Specifications.”

Troubleshooting

Check the following points whenever you experience problems with your watch.

Problem

Cannot perform manual receive.

Auto receive is turned on, but the receive indicator does not appear on the display.

Time setting is incorrect following signal reception.

2,000 miles

Fort Collins

The watch is not in the Timekeeping Mode.

• 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 receive indicator disappears every day at 3am.

• 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.

500 kilometers

Fukuoka/Saga

1,000 kilometers

Probable Cause

Frequency

WWVB

JJY JJY

60kHz 40kHz 60kHz

Received Transmitter

Fort Collins, Colorado

Fukushima or Fukuoka/Saga, Japan

(selectable)

500 kilometers

Fukushima

1,000 kilometers

What you should do

Enter the Timekeeping Mode and try again.

• 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.

•

Put the watch in a location that is suitable for good reception.

• Change the DST setting to AUTO DST.

• Select the correct Home City Code.

Auto Summer Time (DST) Switching

The time calibration signal transmitted from Fort Collins, Colorado includes both standard time and summer time (Daylight Saving Time) data. When auto summer time (DST) switching is turned on, the watch switches between standard time and summer time (DST) automatically in accordance with the Fort Collins signal.

• 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 .

• The time calibration signals transmitted from the Fukushima and Fukuoka/ Saga do not include summer time data.

• When using the watch in the Continental United States or in Japan, select AUTO DST for the auto summer time setting.

• The default auto summer time settings is AUTO DST whenever you select one of the following city codes as your Home City code: HKG, TYO, SEL, NYC, CHI, DEN, LAX, ANC, or HNL.

• If you experience problems receiving the time calibration signal in your area, it is probably best to turn off auto time switching.

• See page about configuring summer time (DST) settings manually.

To select the auto summer time setting

1. In the Timekeeping Mode, press B. This causes the current auto receive

on/off setting (the receive indicator) to flash, which indicates the setting screen.

2. Press C three times until the summer time (DST) setting screen appears.

3. Use D to cycle through the summer time settings in the sequence shown

below.

4. When the setting y ou want is selected, press B to exit the setting screen.

Timekeeping

• The day of the week is automatically displayed in accordance with the date (year, month, and day) settings.

• The year can be set in the range of 2000 to 2039.

• The watch’s built-in full automatic calendar automatically makes allowances

for different month 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.

• The current time for all city codes in the Timekeeping Mode is calculated in accordance with the Greenwich Mean Time (GMT) differential for each city, based on the your Home City time setting.

• GMT differential is calculated by this watch based on Universal Time Coordinated (UTC*) data.

The letters “UTC” stands for “Universal Time Coordinated,” which is the

world-wide scientific standard of timekeeping. It is based upon carefully maintained atomic (cesium) clocks that keep accurate 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.

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 the 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, with 24 indicator.

Inputting Text

The following describes how to input text in the Alarm and Data Memory Modes.

To input characters

Cursor

Reminder Text Input

Screen

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 want.

• See the “Character List” at the back of this manual for information about the characters you can input.

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 backlight uses an EL (electro-luminescent) panel that causes the entire display to glow for easy reading in the dark. In any mode, press L to illuminate the display for about one second.

• The electro-luminescent panel that provides illumination loses power after very long use.

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

• The watch may emit an audible sound whenever the display is illuminated. This is due to vibration of the EL panel used for illumination, and does not indicate malfunction.

• The backlight automatically turns off whenever an alarm sounds.

• Frequent use of the backlight shortens the battery life.

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

Press D.

(space)

(number)

(lower-case)

Press A.

(upper-case)

(symbol)

— 5 —

Page 8

3. DRAWINGS: QW-2510 3-1. LCD DIAGRAM

L 4

L 5

L 6

L 7

L 8

L 9

L10

L11

L12

L13

L14

L15

L16

L17

L18

L19

L20

L21

L22

L23

L24

L25

L26

L27

L28

L29

L30

L31

L32

alm0

alm1

alm2

alm3

alm4

y3 y2 y1

f5c5b5

d5 d4

snz

alert

e1 c1

dst

col1

col0

f0a0b0

rc3

d3 d2

rc2

rc3

rc2

rc1

X36

sig

rc1

SEG.

L4 L5 L6 L7 L8

L9 L10 L11 L12 L13 L14 L15 L16 L17 L18 L19 L20 L21 L22 L23 L24 L25 L26 L27 L28 L29 L30

COM.

LC1 x14y2 x13y2 x12y2 x11y2 x10y2

x9y2 x8y2 x7y2 x6y2 x5y2 x4y2 x3y2 x2y2 x1y2

x0y2 x19y2 x20y2 x21y2 x22y2 x23y2 x24y2 x25y2 x26y2 x27y2 x28y2 x29y2 x30y2

LC2 x14y1 x13y1 x12y1 x11y1 x10y1

x9y1 x8y1 x7y1 x6y1 x5y1 x4y1 x3y1 x2y1 x1y1

x0y1 x19y1 x20y1 x21y1 x22y1 x23y1 x24y1 x25y1 x26y1 x27y1 x28y1 x29y1 x30y1

LC3 x14y0 x13y0 x12y0 x11y0 x10y0

x9y0 x8y0 x7y0 x6y0 x5y0 x4y0 x3y0 x2y0 x1y0

x0y0 x19y0 x20y0 x21y0 x22y0 x23y0 x24y0 x25y0 x26y0 x27y0 x28y0 x29y0 x30y0

L57

L56

L55

L50

L49

L48

L47

L46

L45

L44

L43

L42

L41

L40

L39

L38

L37

L36

L35

L34

L33

LC3

LC2

LC2 x31y1 x32y1 x33y1 x34y1 x35y1 x36y1

rc1

b0 g0 b1 g1 b2 g2 b3 g3 e3 b4 g4

f4 b5 g5

x18y1 x17y1 x16y1 x15y1

LC1

LC3 x31y0 x32y0 x33y0 x34y0 x35y0 x36y0

LC4 x31y4 x32y4 x33y4 x34y4 x35y4 x36y4

LC5 x31y3 x32y3 x33y3 x34y3 x35y3 x36y3

rc3

w0 w1 w2 w3 w4

d0 d1

d2 sig dst

col1

alert

snz

alm4 alm3 alm2

alm2

p x18y0 x17y0 x16y0 x15y0

x18y4 x17y4 x16y4 x15y4

alm1

alm0 x18y3 x17y3 x16y3 x15y3

LC5

LC4

L58

L60

L59

COM.

LC4 x14y4 x13y4 x12y4 x11y4 x10y4

x9y4 x8y4 x7y4 x6y4 x5y4 x4y4 x3y4 x2y4 x1y4

x0y4 x19y4 x20y4 x21y4 x22y4 x23y4 x24y4 x25y4 x26y4 x27y4 x28y4 x29y4 x30y4

LC5 x14y3 x13y3 x12y3 x11y3 x10y3

x9y3 x8y3 x7y3 x6y3 x5y3 x4y3 x3y3 x2y3 x1y3

x0y3 x19y3 x20y3 x21y3 x22y3 x23y3 x24y3 x25y3 x26y3 x27y3 x28y3 x29y3 x30y3

SEG.

L31 L32 L33 L34 L35 L36 L37 L38 L39 L40 L41 L42 L43 L44 L45 L46 L47 L48 L49 L50 L55 L56 L57 L58 L59 L60

LC1 x31y2 x32y2 x33y2 x34y2 x35y2 x36y2

rc2

c0 e0 c1 e1 c2 e2 c3 d3

col0

c4 d4 e4 c5 d5

e5 x18y2 x17y2 x16y2 x15y2

— 6 —

Page 9

GND VDD2

CRIN

BAT

VCH VDD3 VC1 VC2

C3C8

XTB

Xtal1

L4 L60- - - - - LC1 LC5- - -

LCD

LD1

CRMS

S2S4S3

VDD1

VDD2A

BD1

GNDA

LL1

Tr1

CRST

T1T2T3

KI1

KI2

KI3

KI4

KI5

KI6

KI7

KI8

KI9

EMP

VDSP

VOSC

VC3 VC4

VHF

VAN

KC5

KC4

KC3

KC2

PX1

PY1

Vref

PW1

PY3

PX3

PU1

PZ1

ADIN

KC6

KC1

L2L1

✽1✽1✽1✽1✽1✽1✽1 ✽1 ✽1 ✽1✽1

✽1

A2OUT

✽1

✽4 ✽4

✽1

Creg

PON

REG

AGC

VSM0

VSM1

TCOGND

HOLD

VCC

Cxt

C401

Rxt2

Ccp9

Cf12

Cagc

Cbat

Rbat

Xtal2

ANT

Rant2

Cf13

Rcp

An.B

CLF1

Cel

INV

LL2

L+

VOUT

L-

GND

CLF2

V+

BACK

FRONT

PTINPTSCUTSCKSDOCSBSDILC6

Rxt3

Xtal3

✽2

✽3✽1✽3

✽3

✽1

Ccont

C402

C403

C603

C602

C601

Rant1

Rcont

RsRgRd

FET

L3,L51-54 ✽1

✽5

Rpd

TOT AL

BONDING

(LSI TEST AC, T1-3, KI1-9, L8-39)

129 Pins

96 Pins

LSI

✽ 1. No bonding

✽ 2. Short (Soldering)

✽ 3. Latch type key

✽ 4. O1 and O2 are used in this module.

✽ 5. An.B is not mounted in this module.

3-2. CIRCUIT DIAGRAM

— 7 —

Page 10

3-3. CHECKING TERMINALS AND COMPONENT

Capacitor/Chip

Xtal2

6. (1002 7212)

Xtal3

KI2

XT2

KI3

LD1GND

KI5

Oscillator/Crystal

(1005 5378)

Rxt2

Resistor/Chip

Rxt3

Resistor/Chip

Rbat

GND

XT3

XT2

VDD2

XTB

VDD1

GND

VC1

VC2

KI8

GND

GND VHF

GND

KI6KI7

VDD3

VDSP

GND

GND VOSC

VC3

VC4

Resistor/Chip

Rant2

Resistor/Chip

Creg

Capacitor/Chip

3. PCB ASS'Y (7640 5314)

Cel

Capacitor/Tantalum

INV

KI4

VOUT

L+

L-

GND

KI1

Capacitor/Tantalum

Resistor/ Chip

Capacitor/Chip

Cagc

Inverter

GND

L-

CLF2

VOUT

CLF1

L+

VCH

KI4

VCH

KC1

KC2

KI1

VDD2

VOUT

GND

KC5

VC1

Capacitor/Chip

Resistor/Chip

Rcp

Cf13

GND

VDD2

CLF2

V+

CLF1

GND

VDD2

Capacitor/Chip Ccp9

Capacitor/Chip

Cf12

GND

GND12GND

KC3

316542

GND

VOSC

LL1

VDD2

Capacitor/ Chip

121314

KI9

KC4

GND

KI2

GND

KI9

GND

LD1

GND

KI9

GND

KI5

GND

LL1

GND

KI3

Xtal1

Oscillator/Crystal

(7110 1263)

Capacitor/Chip

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

Resistor/Chip

FET

Capacitor/Chip

Cxt

— 8 —

Resistor/Chip

Transistor

Resistor/Chip

Rpd

Tr1

Capacitor/Chip

Cbat

4. Capacitor/Trimmer (1001 0950)

Coil

LL1

Varistor

Transistor

Page 11

4. EXPLODED VIEW: QW-2510

1 (1007 6096)

15 (1007 6109)

13 (1007 6106)

12 (1007 6104)

3 (7640 5314) PCB Ass'y

18 (7233 1757)

21 (7201 9249)

13 (1007 6106)

2 (1007 6108)

20 (1007 6101)

19 (1007 6102)

8 (7225 2421)

14 (1007 6103)

22 (1007 6100)

11 (7231 1952)

9 (1005 8521) Battery Lithium

(CR2016)

16 (1007 6099)

10 (1007 6107)

17 (7233 0952)

9 (1005 8521)

— 9 —

Page 12

5. PARTS LIST: QW-2510

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

1007 5930 MODULE/WITHOUT MOVEMENT QW-2510YCSA-02 WV-54DA-7AV 1 A

< LCD, Cushion 2709-1, Interconnectors, Sheet/Insulation and Holder/Antenna are not included in the module QW-2510. >

1 1007 6096 LCD C2511-01P QW-2510YCSA-02 1 A 2 1007 6108 EL YEL-2511-A-01 QW-2510YCSA-02 1 A 3 7640 5314 PCB ASS'Y Q255541*1TK QW-2510YCSA-02 1 A 4 1001 0950 CAPACITOR/TRIMMER CTZ2E-30C-W2-P QW-2510YCSA-02 1 B 5 7110 1263 OSCILLATOR/CRYSTAL DT-26S07 QW-2510YCSA-02 1 B 6 1002 7212 OSCILLATOR/CRYSTAL C2-40.003KHZ-10/10 QW-2510YCSA-02 1 B 7 1005 5378 OSCILLATOR/CRYSTAL C2-60.003KHZ-10/10 QW-2510YCSA-02 1 B 8 7225 2421 CONTACT/BATTERY(-) Q34947C-2 QW-2510YCSA-02 1 C

9 1005 8521 CUSHION 2397-1 Q468515-1 QW-2510YCSA-02 2 C 10 1007 6107 CUSHION 2709-1 Q469338-1 QW-2510YCSA-02 1 C 11 7231 1952 HOLDER/BATTERY Q253743-1 QW-2510YCSA-02 1 C 12 1007 6104 HOLDER/HOUR WHEEL Q370808-1 QW-2510YCSA-02 1 C 13 1007 6106 INTERCONNECTOR 2511-1 Q469335-1 QW-2510YCSA-02 2 C 14 1007 6103 INTERCONNECTOR 2709-2 Q469334-1 QW-2510YCSA-02 1 C 15 1007 6109 PANEL Q370868-2 QW-2510YCSA-02 1 C 16 1007 6099 SHEET/INSULATION Q469326-1 QW-2510YCSA-02 1 C 17 7233 0952 SHEET/INSULATION 1028 Q434476-1 QW-2510YCSA-02 1 C 18 7233 1757 SHEET/INSULATION 1403 Q452985-1 QW-2510YCSA-02 1 C 19 1007 6102 SPRING/COIL 2511-1 Q469331-1 QW-2510YCSA-02 2 B 20 1007 6101 SPRING/COIL 2709-3 Q469330-1 QW-2510YCSA-02 1 B 21 7201 9249 SPRING/COIL 675-3 Q413389A-1 QW-2510YCSA-02 1 B 22 1007 6100 HOLDER/ANTENNA Q469327-1 QW-2510YCSA-02 1 C

BATTERY/LITHIUM CR2016 QW-2510YCSA-02 1

Very Important Important Less important

For the prices and minimum order/supply quantities of the above parts, refer to the Parts Price List P.P.L.-580.

Notes: Q - Used quantity

R - Rank

— 10 —

Page 13

6. PRECAUTIONS FOR REPAIR: QW-2510 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 negative (–) side of 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.

Metallic tweezers

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 D button, press B and C buttons at the normal time keeping 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”

Push any button except for D 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.

QW-2510

— 11 —

Page 14

CASIO TECHNO CO.,LTD.

Overseas Service Division

Nishi-Shinjuku Kimuraya Bldg. 1F 5-25, Nishi-Shinjuku 7-Chome Shinjuku-ku, Tokyo 160-0023, Japan