Casio MTG-950BDJ Service Manual & Parts List

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Page 1

SERVICE MANUAL

& PARTS LIST

REF. NO. S/M-901

JUL. 2005

MODULE NO.

QW-2819

MTG-950BDJ

(WITHOUT PRICE)

Page 2

CONTENTS

Page

1. SPECIFICATIONS: MODULE QW-2819 .................................................... 1

2. OPERATION CHART: MODULE QW-2819 ............................................... 2

3. DRAWINGS: MODULE QW-2819

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

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

3-3. CHECKING TERMINALS AND COMPONENTS .........................................11

4. EXPLODED VIEW: MODULE QW-2819 ................................................... 12

5. PARTS LIST: MODULE QW-2819 ............................................................ 13

6. PRECAUTIONS FOR REPAIR: MODULE QW-2819

6-1. AC (ALL CLEAR) AND REMOVING OF MODULE ..................................... 14

6-2. ACCURACY CHECKING .............................................................................14

6-3. SOLAR CELL-PCB ASS'Y CONTACT CHECKING....................................15

6-4. HOW TO CHECK TILT SENSOR.................................................................15

7. TROUBLESHOOTING: MODULE QW-2819.............................................16

Page 3

SPECIFICATIONS: MODULE QW-2819

Item Detail

Battery CTL1616 (Storage battery)

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

damage to the watch.

Battery life Approx. 6 month (from full charged condition) Current consumption 2.698 µA maximum Alarm system Piezo plate on Cover/Back Accuracy ±15 sec./month Accuracy setting system Trimmer capacitor Accuracy checking See page 14 Functions

Accuracy at normal temperature: ±15 seconds a month (with no signal calibration)

Timekeeping: Hour, minutes, seconds, a.m. (A)/p.m. (P), month, day,

day of the week Time system: Switchable between 12hour and 24-hour format

Calendar system: Full Auto-calendar pre-programmed from the year 2000

to 2099

Other: Home city cord (can be assigned one of 34 city cords);

Daylight Saving Time/Standard time

Time Calibration Signal Receotion:

Receivable Time

World Time: 30 cities (29 time zones)

Other: Standard time/Daylight Saving Time, Home time (hour,

Time Recorder: Memory for 30 records, each containing hour, minutes,

Alarms: Stopwatch

Measuring unit: 1/100 second Measuring capacity: 23:59' 59.99" Measuring modes: Elapsed time, split time, two finishes

Other: Backlight (electro-luminescent panel); Auto Light Switch

Battery: One rechargeable battery (type: CTL1616)

Approximate Battery life:

Auto Receive (four times per day, at 2:00 AM, 3:00 AM, 4:00 AM, and 5:00 AM); Manual Receive; Last Signal screen

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)

minutes, a.m. (A)/p.m. (P), and Standard time/Daylight Saving Time)

seconds, a.m. (A)/p.m. (P), and Standard time/Daylight Saving Time Four one-time alarms; one snooze alarm; Hourly Time Signal

(Full Auto EL light operates only in the dark); Battery power indicator; Power Saving function

Use only the type of battery specified by CASIO. Never use a different battery type. The wrong type of battery can damage the watch.

6 months (from full charge to Level 3 when the watch is not exposed to light) under the following conditions:

•

Display on 18 hours per day, sleep state 6 hours per day

• 1 backlight operation (1.5 seconds) per day

• 10 seconds of alarm operation per day

• 4 times calibration reception per day

— 1 —

Page 4

2. OPERATION CHART: MODULE QW-2819

Mode Indicator

City Code

World Time Mode Recall Mode

Alarm Number

Stopwatch Mode Alarm Mode

Place the watch in an area that is well-lit, press any button, or

angle the watch toward your face to illuminate the display using

you place the watch in a well-lit area.

the Auto Light.

• It can take up to two seconds before the display re-appears after

■ To turn Power Saving on and off

Use the procedure under “Setting the Time and Date Manually” to

■ To recover from the sleep state

Leaving the watch in a drawer or anywhere else it is dark can

cause Power Saving to trigger in order to conserve battery

power.

turn Power Saving on or off.

any operation for about two or three minutes.

• The watch will automatically revert to the Timekeeping Mode if you leave it in the Alarm Mode or Recall Mode without performing

• Entering the Alarm Mode displays an alarm number, “SNZ” (snooze alarm), or “SIG” (hourly time signal).

Day of the Week

Battery Indicator

Timekeeping Mode

Hour, minute,

BButton

AButton

PM indicator

second

(no display for AM)

DButton

CButton

Month, day

(Light)

LButton

Mode Indicator

SUN : Sunday MON : Monday TUE : T uesday

WED : Wednesday THU : Thursday FRI : Friday

Days of the Week

SAT : Saturday

Sleep indicator

Alarms and the hourly time signal continue to operate normally

while the watch is in the display sleep state.

Power Saving

The Power Saving feature of the watch is turned on at the factory.

• Power Saving causes the watch to automatically enter a sleep stage to save power whenever the watch is left in the dark.

• Note that the watch may also enter the sleep state if the watch is blocked from light by your sleeve.

The display sleep state is triggered whenever the watch is left in the

■ How the sleep state works

• Display sleep state

dark for about one hour between the hours of 10 p.m. and 6 a.m.

Stopwatch Mode.

• The display goes blank, except for a sleep indicator flashing on it.

• The watch does not enter the sleep state if it is in the

also disabled while the watch is in the function sleep state.

the function sleep state.

• The sleep indicator stops flashing and remains on the display.

• Alarms, the hourly time signal, and auto signal reception are

The function sleep state is triggered whenever the watch is left in the

• Function sleep state

• Digital timekeeping functions continue to operate normally in

dark for six or seven days.

— 2 —

Memo number

The display shows the contents of the record for

about two seconds, after which the normal

Timekeeping Mode display reappears. •Use the following procedure to recall lap/split

time memory contents. See “To view Time Stamp

Modes and Display Screens

Time Stamp (Time Memo)

Holding down the B button for about one

second in the Timekeeping Mode creates a

•

record containing the current date (month and

day) and time (hour, minute, second) in

memory. Storage of the record is indicated by

the watch beeping.

records” for more information.

Hour, minute,

second

Month, day

Page 5

Approximate

Charging Time

(Brightness)

Exposure Level

The following is the daily

amount of charging required

each day to support the

operations under “Daily Use”.

Required Daily Charging Time

•

5 minutes

24 minutes

(50,000 lux)

(10,000 lux)

Outdoor Sunlight

Daylight Through a Window

Sunlight Through a Window

8 hours

48 minutes

(500 lux)

(5,000 lux)

on a Cloudy Day

Indoor Fluorescent Lighting

Approximate Charging Time

Level 4 \ Level 3 \ Level 2 \ Level 1

14 hours1 hour 3 hours

70 hours3 hours 14 hours

28 hours

143 hours

5 hours

––– –––

57 hours

seconds

Daily Use (All time values are

approximate.)

• Display Illumination: 1.5

• Alarms: 10 seconds

• Signal reception: 4 times

■ Charging Guide

Starting from a full charge, it

should take approximately six

months of operation without

further charging under the

conditions described below before

battery drops to Level 3.

■ Charging Precautions

heat

Avoid charging the watch in the following locations, and anywhere

else where the watch may become very hot.

• On the dashboard of an automobile parked in the sun

• Very close to an incandescent light source or other sources of

• In a location exposed to direct sunlight for long periods

Note that the display panel may become black under very high

temperatures. This is temporary, and the display will appear

All functions enabled.

• Digital display: 18 hours

Depending on the light source you are using, the

case of the watch may become quite hot during

charging. Take care to guard against burn injury after

charging.

normal again at lower temperatures

Display, display illumination, alarms,

hourly time signal, and signal

reception disabled.

Making sure the watch is

regularly exposed to light ensure

stable operation.

• Charge Times Required to Advance to a Higher Level

charging efficiency.

■ The change the battery

Point the solar panel (face) of the watch at a light source.

• Remember that even a partial blockage of the solar cell reduces

All functions, including digital

timekeeping, disabled.

(Brightness)

Exposure Level

Outdoor Sunlight

Example: Positioning the watch

(50,000 lux)

Sunlight Through a

Window (10,000 lux)

Solar Cell

Day (5,000 lux)

Daylight Through a

Window on a Cloudy

charging time depends on a variety of environmental factors.

Lighting (500 lux)

Indoor Fluorescent

• Note that the above charging times are for reference only. Actual

• The illustration shows the resin band mode.

display of the watch is shade by your sleeve.

Auto Light Precautions

watch towards your face. This does not indicate malfunction.

• Frequent use of the auto light can run down the battery.

• The auto light switch may cause the display to illuminate when the

• The display may not illuminate immediately when you angle the

• The display remains lit for about 1.5 seconds only, even if you

Rotate your arm so the watch is

angled at about 40 degrees, so you

can read its face.

With the watch on your

wrist, position it parallel

with the ground.

■ To illuminate the display

leave the watch angled towards your face.

watch on the inside of your wrist, when you shake your arm, or

when you raise your arm. Be sure to turn off the auto light

switch whenever you do not need display illumination.

the watch on the inside of your wrist.

• Keep the auto light switch turned off whenever you are wearing

• Electro-static charge and magnetism can interfere with auto light

• You should be wearing the watch on the outside of your wrist

operation and even make operation impossible. If this happens,

• The display may illuminate unintentionally when you wear the

At least

40°

when using the auto light switch.

lower your arm to the starting position and then raise it again. If

• Make sure that the left (9 o’clock) and

you still have trouble with display illumination, try lowering your

arm down to your side and then raise it to your face for reading.

right (3 o’clock) sides of the watch are

within ±15 degrees of being parallel

with the ground. The auto light switch

may not operate properly if the angle is

sunlight.

greater

Display Illumination Precautions

• The light may be difficult to see if you turn it on under bright

Auto Light Switch

On Indicator

display is illuminated, illumination will turn off.

• If you press the L button or if an alarm operation starts while the

• You may notice a slight sound from the watch while the display is

illuminated. This is the sound of EL panel vibration, and does not

indicate malfunction.

(Off)

Level 1

Level 2

Level 3

Level 4

■ Battery Indicator

Power Supply

The power supply of this watch uses a solar cell to generate

electrical power, which is stored by a rechargeable battery. Using

or storing the watch where it is not regularly exposed to light, or

allowing it to be blocked from light by your sleeve as you are

wearing it can cause the power of the rechargeable battery to run

Note that all data in memory and all settings are cleared

whenever you allow the level of the rechargeable battery to

down. To ensure stable operation, be sure to allow the watch to be

exposed to light as much as possible when you are wearing or

storing it.

drop to Level 4.

cause the battery level indicator to momentarily indicate a level

• Exposing the watch to direct sunlight or other strong light may

■ Flashing Recovery Indicator

If you use the light or alarms a number of times during a short

that is higher than the actual battery level. Because of this, you

should wait for a short while after charging to check the battery

period, a Recovery indicator flashes on the display and the

following operations become disabled as battery power recovers.

level indicator.

• Display illumination

be able to recharge the battery and use the watch again.

the battery level recharges to Level 3. At this time you should

continue to expose the watch to light so it can charge up the Level

• Even if the battery level drops all the way to Level 4, you will still

• Alarm and hourly time signal

2 or Level 1.

• When recharging from Level 4, set the current time and date after

Recovery Indicator

• Time calibration signal reception

■ Start charging at Level 3!

Battery Level 3 indicates that remaining battery power is very low.

Be sure to expose the watch to light for recharging as soon as

Normal operation will return after the battery recovers.

— 3 —

possible after the Level 3 indicator starts to flash.

when surrounding light is bright.

The light is very convenient when reading the current time

and other data in the dark.

The full auto light switch automatically illuminates the display

whenever you angle the watch towards your face for reading,

Illuminating the Display with the

but only when it is dark.

Auto Light Switc

Display Illumination

An EL (electro luminescent) panel is used to illuminate the display

for easy reading in the dark. An auto light switch automatically

illuminates the display when you angle the watch towards your

face for reading.

■ To illuminate the display manually

The auto light switch illuminates the display in all modes.

• The full auto light switch does not illuminate the display

L button in any

Pressing the

mode illuminates the digital

In the Timekeeping Mode, hold down the L button for about two

seconds to toggle the auto light switch on (auto light switch on

indicator displayed) and off (no indicator displayed).

display for about 1.5 seconds.

illuminates the display regardless

of whether the auto light switch is

on or off

• Pressing the L button

You may hear a faint rattling sound when you move the watch

around. This sound is caused by the movement of a metal

bulb that controls operation of the auto light switch, and does

not indicate malfunction.

When the auto light switch is on, holding down the L button for

about two seconds turns the auto light switch off (auto light switch

indicator not displayed).

Page 6

Transmitter

3000km

1000km

Fort Collins

Transmitter Location

receivable up to 3,000 kilometers from the transmitter.

1,000km, so reception may be poor at long distances.

• Under optimum conditions, the calibration signal should be

• Note that the wave is relatively weak at distances greater than

■ Receive icon

The receive icon cycles from

“Unstable” through “Stable” as

shown below while reception is in

progress. How far it cycles depends

on the signal strength. Keep the

watch in a location where reception

is stable while reception is in

progress.

Unstable Stable

determine the best location for signal reception.

• Use the receive icon to check reception status and to

seconds for reception to stabilize.

• Even under optimum reception conditions, it can take about 10

factors can all affect reception.

• Note that weather, the time of day, surroundings, and other

Either the Mt. Otakadoya signal (40kHz) or the Mt.Hagane signal (60kHz)

Fort Collins, Colorado signal

TYO

Home City

LAX, DEN, CHI, NYC

Reception Range

This watch is designed to receive the standard time calibration signal of Japan (JJY) or of the United States (WWVB). The signal that is

received depends on the current Home City setting.

• For information about selecting a Home City, see “Setting the Time and Date Manually”

the independent Japan Ministry of Posts and Telecommunications

Communication Research Laboratory (CRL). It is a long wave

signal transmitted 24 hours a day from the Mt. Otakadoya

transmitter (40kHz) located in Tamura-gun, Fukushima Prefecture,

and from the Mt. Hagane transmitter (60kHz) located on the

Calibration Signal

• The Japanese calibration signal (Call Sign: JJY) is maintained by

border between Saga Prefecture and Fukuoka Prefecture.

• The U.S. calibration signal (Call Sign: WWVB) is transmitted by

Mt. Otakadoya

(40kHz)

1000km

500km

Transmitter Location

the National Institute of Standards and technology from Fort

Collins, Colorado.

Mt. Hagane

, lightening, etc.

Though the calibration signal is normally transmitted 24 hours

a day, transmission may be interrupted occasionally due to

maintenance

1000km

(60kHz)

receivable up to 1,000 kilometers from the transmitter.

• Under optimum conditions, the calibration signal should be

500km, so reception may be poor at long distances.

• Note that the wave is relatively weak at distances greater than

the transmitter.

• Geographic contours, nearby buildings, the season, the time of day, can even make reception impossible even when you are within range of

• Best reception is possible late at night.

Receive icon

” icon flashes on

D button for about two

has started. The “

mode, signal reception can take up to 12 minutes.

the transmitter mode.

■ Time Required for Reception

Signal reception takes anywhere from about two to six minutes.

• Note that when “AUTO” is specified as the frequency selection

• See “Specifying the Transmitter Mode” for more information about

3:00, 4:00, and 5:00 each morning.)

• Auto reception (Reception is performed automatically at 2:00,

Receiving the Calibration Signal

There are two methods you can use to receive the time calibration

signal.

■ To trigger reception manually

Manual receive (You initiate reception using a button operation.)

•

need to do is to place it in a location that allows good reception

each night.

• The watch is set up for auto reception at the factory, so all you

In the Timekeeping Mode, hold

the display while signal reception is

down the

seconds until the watch beeps.

• This indicates that manual receive

■ To make reception easier

Remove the watch from your wrist and place it somewhere so its

top (12 o’clock side, where the antenna is located) is facing

approximately in the direction of the signal transmitter. Keep it

away from metal objects.

D D

D button.

in progress.

Press the

■ To stop signal reception

are disabled during signal reception.

” icon on the display also indicates successful signal reception.

” icon is cleared from the display each day at 3:00 a.m.

• All other buttons besides

When reception is successful

Resin band

The “

The watch terminates reception and adjusts the current time. Next

it beeps and then displays the date and time the adjustment was

performed.

• The “

if you do not perform any operation for about one or two minutes.

• The display will return to the normal timekeeping screen automatically

When reception fails

The watch does not adjust its current time setting, and displays

“ERR” instead.

Metal band

more difficult to receive the signal.

• Orienting the watch so it is sideways to the transmitter makes it

• Do not move the watch while it is receiving the calibration signal.

Watch decodes

received data and

converts it to time

data.

Time is adjusted

Signal is received using

built-in antenna.

Long-wave time

How a Radio-controlled Watch Works

What is a radio-controlled watch?

Your radio-controlled watch is designed to receive a time

calibration signal that contains standard time data and adjust its

Transmitter

current time setting accordingly.

tion signal calibra

Decode

Signal data

Time data

according to time

data.

Internally

Watch

Cesium

atomic clock

After the watch receives the Standard Time signal, it performs

internal calculations to determine the current time. Because of

this, there may be an error of up to one second in the displayed

Near high-voltage linesAmong or near buildings

time.

is receiving the calibration signal.

Location

Reception is difficult and may even be impossible in the locations

described below. Avoid such locations when performing signal reception.

• You should think of your watch operating like a radio or TV when it

Next to a household appliance

or office equipment

(TV, speaker, fax, PC, mobile

phone, etc.)

Inside a vehicle

(automobile, train, plane, etc.)

Near mountains

If you are experiencing problems with reception, move away

In a location where there is radio

interference

(construction site, airport, etc.)

from the types of locations described above to a location with

better reception, and try again.

— 4 —

Page 7

Auto switching in accordance

Auto Japan transmitter select

(40kHz/ 60kHz)

Toky

with signal data

AUTO

•

Specifying the Transmitter Mode

priority for the next receive operation.

With this setting, the watch automatically selects either the Mt.

Otakadoya signal (40kHz) or the Mt. Hagane signal (60kHz),

whichever is strongest.

• The transmitter that was last received successfully is give

either of two different transmitters for reception.

• For information about selecting a Home City, see “Setting the

When TYO (Tokyo) is selected as the Home City, you can select

• 40With this setting, the watch always receives the Mt. Otakadoy

FREQUENCY (Frequency)

A button

In the Timekeeping Mode

hold down the

Time and Date Manually”.

signal (40kHz).

• 60With this setting, the watch always receives the Mt. Hagane

for about two seconds

until the current

transmitter mode setting

flashes on the display.

signal (60kHz).

D button to

Press the

cycle through the

available transmitter

mode settings, described

• This is the setting screen.

below.

A button twice to

When the setting you

want is displayed, press

the

exit the setting screen.

you do not perform any operation for about two or three

minutes.

• The display also will exit the setting screen automatically if

configured automatically whenever you have the battery of the

watch replaced.

Auto Receive

If you cannot receive the calibration signal or if the current time

setting is incorrect after signal reception, check the current setup

of the watch.

• The following are the watch’s factory default settings, which are

location where it can receive the signal.

reception conditions are good.

Timekeeping Mode or World Time Mode

• Place the watch in a location where

• Make sure that the watch is in the

Corrective Measures:• Check to make sure the watch is in a

Transmitter

when during the auto reception times.

Home City is selected.

Time setting is incorrect following signal reception.

Cause: • Summer time is turned on or the wrong

Home City

Summer Time

probably means that summer time

(indicated by the DST indicator on the

display) is turned on. If the time is off by

more than one hour, it probably means

that the Home City is selected. Use the

procedure under “Setting the Time and

Date Manually” to correct the applicable

setting.

Corrective Measures:• If the time is advanced by one hour, it

TYO, NYC, CHI, DEN, or LAX.

“ON” or “OFF” is not displayed when I change the auto

reception setting.

Cause: • Your Home City is something other than

Corrective Measures:• Select one of the following as your Home

” icon is displayed only when both

Date Manually”.

(Chicago), DEN (Denver), or LAX (Los

Angeles). For information about selecting

a Home City, see “Setting the Time and

City: TYO (Tokyo), NYC (New York), CHI

” icon from the display.

A button

C button three

In the Timekeeping Mode

hold down the

for about two seconds

until the transmitter

selection mode setting

flashes on the display.

Press the

times.

• This is the setting screen.

• The display will return to the normal

timekeeping screen automatically if you

do not perform any operation for about

one or two minutes.

• This displays the auto

Important!

■ To turn auto reception on and off

D button.

button again.

signal reception was complete and the

current time and date were adjusted.

In the Timekeeping Mode, press the

■ T o view the last receptoin date and time

press the

• This displays the date and time that

• To return to the timekeeping screen,

D button to

Press the

reception setting screen.

” icon is displayed only when

watch include two data groups: an

hour-minute-second group and a year-

month-day group.

• The calibration signals received by this

• The “

toggle auto reception on

or off.4.When the setting you

both the hour-minute-second group

and year-month-day group are

want is displayed, press

“ ” not displayed

ed.

Hour-minute-second group and year-month-day group received

received. It will not remain on the

display if only the hour-minute-second

group is receiv

A button twice to

the

exit the setting screen.

not perform any operation for about two or three minutes.

• The display also will exit the setting screen automatically if you do

” displayed

” not displayed

“

Hour-minute-second group only received

“

the last reception date shows the date that the receive operation

• If only hour, minute, and second data (no date data) is received,

was performed (as kept in the Timekeeping Mode).

— 5 —

Timekeeping Mode only.

TYO (Tokyo), NYC (New York), CHI

(Chicago), DEN (Denver), or LAX (Los

Angeles).

Timekeeping Mode.

(New Y ork), CHI (Chicago), DEN (Denver),

or LAX (Los Angeles). For information

about selecting a Home City, see “Setting

• The Home City is set to a city other than

Troubleshooting

Cannot perform manual reception.

Cause: • Manual receive can be performed in the

Calibration Signal Reception

Precautions

• Auto reception can be performed while the watch is in the

Timekeeping Mode or World Time Mode only.

the watch to beep and then exit the receive operation.

• Operating any button while auto reception is in progress will cause

Corrective Measures:• Perform manual receive in the

transmitter before performing the reception operation. Remember

• Make sure you are within the range of the calibration signal

the Time and Date Manually”.

• Change Home City to TYO (Tokyo), NYC

that geographic contours, nearby buildings, the season, the time

of day, can even make reception impossible even when you are

within range of the transmitter.

the signal.

• Proper reception may be impossible if there is something blocking

• If reception is unsuccessful, try again.

• This watch is designed to adjust its current time setting in

icon is not on the display even though auto signal “ ” The

reception is turned on.

Cause: • The “ ” icon appears after the watch

accordance with the calibration signal transmitted in Japan and

the United States only. Note that you will need to make your own

adjustments when using this watch outside of Japan or the United

successfully receives the calibration

signal and adjusts the current time setting.

successful.

the hour-minute-second group and year-

month-day group were received. It will not

remain on the display if only the hour-

minute-second group is received.

or World Time Mode when an auto

reception time is reached.

clears the “

• The watch is not in the Timekeeping Mode

being performed.

Attempting a receive operation after that causes an error.

• The watch’s calendar shows dates up to the year 2099.

• You performed manual reception, which

• A single receive operation was not

• The “

States, or in any area that is outside the range of one of the

receivable time calibration signal transmitters.

calibration signal for some reason, timekeeping accuracy is within

±15 seconds per month.

• When the watch is unable to adjust its time signal using the

• Strong electrostatic charge can cause timekeeping error.

• Signal reception is cancelled if an alarm starts to sound while it is

Page 8

B (–)

D (+) and

Time) on and off

■ To turn summer time (Daylight Saving

You can turn summer time on or off individually for each World

Time city.

1. Use the

DST indicator

buttons to scroll through

the city codes until the one

whose setting you want to

change is displayed.

scrolls at high speed.

• Holding down either button

2. While the city code you

A button for

want is displayed, hold

down the

about one second to turn

summer time on (DST

indicator displayed) or

off (DST indicator not

displayed).

you change the summer time

setting.

• The watch beeps each time

Summer time, or Daylight Saving Time (DST) as is it is called

in some countries, calls for setting clocks ahead one hour

during the summer season. Note that the use of summer time

depends on the country and even the local area.

A button for two or three

the

seconds to delete all Time

Stamp records from memory.

B (–) buttons to

D (+) and

scroll through Time Stamp

records.

individual Time Stamp records.

• Note that you cannot delete

scrolls at high speed.

• Holding down either button

In the Recall Mode, hold down

■ To delete Time Stamp records

Memo number

Viewing Time Stamp (Time Memo) Data

Use the C button to enter the Recall Mode.

new Time Stamp record since then, the newly created record appears first.

The Time Stamp function lets you store up to 30 records of time data (month, day, hour, minute, second). Time Stamp records serve as

helpful memos when you need to remember the current date and time for some reason.

• In the Timekeeping Mode, hold down the B button for about one second to create a Time Stamp record.

• Any time you enter the Recall Mode, the record you were viewing when you last exited the Recall Mode appears first, or, if you created a

■ To view Time Stamp records

In the Recall Mode, use the

(Back)

B (–)

D (+) and

Use the

buttons to scroll through the

city codes (time zones).

■ To search for a city

• Holding down either button scrolls

City Code

World Time Mode

When you enter the World Time Mode, the screen for the city that

was displayed when you last exited the mode appears first.

World time lets you display the current time in any one of 30 cities

(29 time zones) around the world.

(Forward)

information about the display

sequence of the city codes.

at high speed.

• See the “World Time City List” for

Standard Time in

Displayed City

Mode) Time

Home City

(Timekeepin

If a World Time Mode time is incorrect, check the time setting

and time zone setting of the Timekeeping Mode, and correct

Timekeeping Mode, the World Time Mode calculates the current

time in other cities around the world using the GMT differential for

each time zone.

• After you set the current time for the Home City in the

• The seconds count in the World Time Mode is linked with the

them if necessary.

Timekeeping Mode seconds count.

+3.5+4+4.5+5+5.5+6+6.5

GMT Differential

Kabul

Dubai

Jeddah

Teheran

Jerusalem

JRS

JED

–11

–10

GMT Differential City Code City Name

Honolulu

time, see “Setting the Time and Date Manually”.

• For information about selecting a Home City and setting the

World Time City List

–––

City Code City Name

HNL

KBL

THR

DXB

–9–8–7–6–5–4–3–2–1

Denver

Anchorage

Los Angeles

LAX

ANC

DEN

Delhi

Karachi

KHI

DEL

Chicago

New York

CHI

NYC

Dakar

Yangon

DAC

RGN

Caracas

Rio De Janeiro

RIO

CCS

+7+8+9

Seoul

Bangkok

Hong Kong

SEL

BKK

HKG

+0+0+1+1+2

Greenwich Mean Time

–––

GMT

Tokyo

TYO

London

LON

+10

+9.5

Sydney

Adelaide

ADL

SYD

Paris

Berlin

PAR

BER

+11

+12

Noumea

Wellington

NOU

WLG

Cairo

Athens

CAI

ATH

• The contents of the above table are current as of December 2002.

• Time differentials in the above table are in accordance with Universal Time Coordinated (UTC).

— 6 —

Page 9

Reset

of 2nd finisher.

2nd finisher Displays time

A button.

When all the settings are

the way you want, press

the

you do not perform any operation for about two or three

minutes.

• This exits the setting screen.

• The display also will exit the setting screen automatically if

(Back)

B (–)

D (+) and

Use the

buttons to change the

hour setting.

scrolls at high speed.

sure you specify AM (no

indicator) or PM (P) correctly

• Holding down either button

• When setting the hour, make

Alarm Number

about five minutes. “SNZ” flashes while the snooze alarm is active

(indicating that the alarm will sound again).

■ To stop the alarm beeper

Press any button.

• In the case of the snooze alarm the alarm will sound again in

(Forward)

when using 12-hour

timekeeping, or that you

specify the correct 24-hour

time.

Timekeeping Mode time is also applied in the Alarm Mode.

• The same 12-hour/24-hour format you select for the

screen.

following occurs while the SNZ indicator is flashing on the display.

• If you turn off the snooze alarm in the Alarm Mode.

• If you enter the Alarm Mode, and then display the setting

• The snooze alarm will be canceled automatically when any of the

C button so

Press the

the minute setting flashes.5.Use the

(AL3)

Alarm 3

screen.

• If you enter the Timekeeping Mode and then display the setting

Minute

(AL4)

Alarm 4

(Back)

B (–)

D (+) and

buttons to change the

minute setting.

Alarm Indicator

(Forward)

scrolls at high speed.

• Holding down either button

Hour

Pressing the D button to restart the stopwatch without resetting

it to all zeros resumes elapsed time measurement from where it

■ Elapse Time Measurement

Start Stop Reset

D button.

Stopwatch Mode

The stopwatch measures elapsed time in units of 1/100 second up to 23 hours, 59 minutes, 59.99 seconds (24 hours). When the

maximum limit is reached, the elapsed time automatically returns to zero and timing continues from there.

In the Stopwatch Mode, press the

Performing Stopwatch Operations

Cumulative Time Measurement

Hours

• Each press of the D button starts or stops the stopwatch.

was last stopped.

Seconds

(Split/Reset)

Record split Release split ResetStopStart

■ Split Time Measurement

1/100-second

(Start/Stop)

Minutes

■ 1st and 2nd Place Finishers

(Displays time

of 1st finisher.)

Start 1st finisher

internally.

• Pressing B while timing is being performed freezes the current elapsed time on the display, but timing of the next split continues

• Changing to another mode while a split time is displayed cancels the split time operation.

• Pressing the B button while timing is stopped resets the stopwatch to all zeros.

(AL2)

Alarm 2

D button to cycle

In the Alarm Mode, use

the

through the alarm

screens in the sequence

■ To set an alarm

shown below until the one

you want to set is

(AL1)

Alarm 1

displayed.

Alarm Mode

Your watch comes with five alarms and an hourly time signal.

■ Daily Alarms (AL 1 to AL 4)

The watch beeps for about 10 seconds when an alarm time is

reached.

■ Snooze Alarm (SNZ)

With the snooze alarm, the watch beeps for 10 seconds when the

alarm time is reached, and up to seven times at five-minute

intervals thereafter (approximately 30 minutes total). Pressing any

button stops the beeper, but the alarm will sound again after five

minutes.

■ Hourly Time Signal

The hourly time signal causes the watch to beep every hour on the

(SNZ)

Snooze Alarm

A button

Hold down the

Hourly Time

Signal (SIG)

button to sound the alarm.

hour.

■ Testing the Alarm

In the Alarm Mode, hold down the

for about two seconds

until the hour digits of the

alarm time start to flash.

indicator to appear and

automatically turns on the

alarm.

• This also causes the alarm

— 7 —

D button to display

In the Alarm Mode, use

the

the screen for the alarm

you want to turn on or off.

To turn an alarm or the hourly time

signal on and off

B button to

Press the

toggle the alarm on or off.

Hourly Time Signal

Indicator

Alarm Indicator

Alarm Hourly Time Signal

Snooze Indicator

Snooze Alarm

Page 10

Home City code.

selected as the Home City code, and U.S. summer time

AUTO

This setting enables the auto summer time setting, which

•

City Code

D (+)

While the Home City code

is flashing, use the

data when NYC, CHI, DEN, or LAX is selected as the

turns summer time on or off in accordance with the received

time calibration signal.

• This setting uses Japan summer time data when TYO is

B (–) buttons to

and

scroll through the city

codes.

scrolls at high speed.

• Holding down either button

• See the “World Time City List”

OFF

This setting turns off summer time and displays the current

•

time normally.

for information about the

display sequence of the city

codes.

time is turned on.

This setting turns on summer time and advances the current

time by one hour.

• The DST indicator appears on the display while summer

•

D button to cycle

While the summer time

setting is flashing, press

the

any city code other than HKG, SEL, TYO, NYC, CHI, DEN, LAX,

• Note that the above setting toggles between “OFF” and “On” when

through the summer time

settings until the one you

want is displayed.

• Available settings are AUTO, OFF, and ON.

12/24-hour

While the 12/24-hour

timekeeping setting is

flashing, press the

button to select the

setting you want.

ANC, or HNL is selected as the Home City.

en the local area.

Summer time, or Daylight Saving Time (DST) as is it is called

in some countries, calls for setting clocks ahead one hour

during the summer season. Note that the use of summer time

depends on the country and ev

• Pressing D toggles the

24-hour (“24H” indicator).

timekeeping format between

12-hour (“12H” indicator) and

A button

In the Timekeeping Mode,

hold down the

for about two seconds until

the transmitter mode

setting starts to flash on

the display.

■ To configure settings

Home City

(Hold down about two seconds.)

Mode”.)

Transmitter Mode

(See “Specifying the Transmitter

Setting the Time and Date Manually

You can use the following procedure to set the current time and date of the Home City that you have selected in the Timekeeping Mode.

• Always use the Timekeeping Mode to set and adjust the current time and date settings.

Timekeeping Mode

Settings

C and

Use the

buttons so the setting you

want to change is flashing

• This is the setting screen.

on the display.

Minute

Summer Time

HourSeconds

on and off”.)

Auto Reception Setting

(See “To turn auto reception

12/24-hour

D button to toggle it

While the Power Saving

setting is flashing, press

the

on or off.

Year

Resets to 00.

MonthDay

Power Saving

display, use the C and A buttons to move the flashing between

settings.

• While the setting screen (the one with a flashing setting) is on the

button to reset it to 00.

While the seconds count

is flashing, press the

Use the C and A buttons to select each of the settings and

the D and B buttons to change them.

count is in the range of 30 to

59 resets it to 00 and also

adds 1 to the minutes.

Pressing D in the range of 00

to 29 resets the seconds count

• Pressing D while the seconds

— 8 —

When all the settings are

the way you want, press

the A button.

While the hour, minute,

year, month, or day

setting is flashing, use the

without changing the minutes.

you do not perform any operation for about two or three

minutes.

• The figures on the display stop flashing.

• The display also will exit the setting screen automatically if

The watch automatically makes adjustments for leap

years and month lengths.

Minute

Seconds

(Back)

Year

B (–) buttons

D (+) and

to change the setting.

(Forward)

Month Day

Hour

scrolls at high speed.

make sure you specify AM

(no indicator) or PM (P)

• Holding down either button

correctly, or that you

• When setting the hour,

specify the correct 24-hour

time.

December 31, 2099.

the date you set.

• You can set a date in the range of January 1, 2000 to

• The day of the week is set automatically in accordance with

Page 11

3. DRAWINGS: MODULE QW-2819 3-1. LCD DIAGRAM

L34

L33

L32

L31

LC3

LC2

LC1

L41

L40

L35

L39

L42

L48

L47

L46

L45

L53

L52

L51

LC5

LC4

L55

L54

MID

HIGH

DST1

PM0

SAVE

SLEEP

e5d5c5

LCHARGE

L30

RECOVER

PM1

L28

L29

min

e8d8c8

L23

col0

L22

L21

L20

e9d9c9

L27

L26

L25

L24

col1

hyp

e7d7c7

L19

L18

L17

L16

L15

L14

L13

e2d2c2

c6e6

L12

L11

x16

SIG

sec

L10

e1d1c1

PST

MST

CST

EST

L9L8L7L6L5L4L3L2L1

SNZ

ALM

AUTOEL

DST0

SPL

b0f0

e0d0c0

anta0

anta1

anta2

SEG.

L 1 L 2 L 3 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 L31

COM.

LC1

SIG

DST0

d0 a6

f6 d1 a7 h7 d2 e2 a8 d3 b9 a9

DST1

RECOVER

HIGH

LC2

ALM

SPL

c0 g0 e0 c1 g1 e1 c2 g2

f2 c3 g3 e3

col0

c4 g4 e4 c5 g5 e5

SAVE

MID

LC3

SNZ

AUTO EL

b0 a0

f0 b1 a1

sec

b2 a2 b3 a3

min

b4 a4

f4 b5 a5

PM0

LC4

EST CST MST

PST

c6 d6

c7 d7 e7

hyp

c8 d8 e8

d9 e9

LC5

anta0 anta1 anta2

b6 g6 e6 b7 g7 f7

col1

b8 g8 f8 c9 g9 f9

PM1

SEG.

L32 L33 L34 L35 L36 L37 L38 L39 L40 L41 L42 L43 L44 L45 L46 L47 L48 L49 L50 L51 L52 L53 L54 L55

L28 L29

COM.

LC1 x0y2 x1y2 x2y2 x3y2

x4y2 x5y2 x6y2 x7y2

x8y2 x9y2

x10y2 x11y2

x12y2 x13y2 x14y2 x15y2 x16y2

L30

SLEEP

LCHARGE

LC2 x0y1 x1y1 x2y1 x3y1

x4y1 x5y1 x6y1 x7y1

x8y1 x9y1

x10y1

x11y1

x12y1 x13y1 x14y1 x15y1 x16y1

LC3 x0y0 x1y0 x2y0 x3y0

x4y0 x5y0 x6y0 x7y0

x8y0 x9y0

x10y0 x11y0

x12y0 x13y0 x14y0 x15y0 x16y0

LC4 x0y4 x1y4 x2y4 x3y4

x4y4 x5y4 x6y4 x7y4

x8y4 x9y4

x10y4 x11y4

x12y4 x13y4 x14y4 x15y4 x16y4

LC5 x0y3 x1y3 x2y3 x3y3

x4y3 x5y3 x6y3 x7y3

x8y3 x9y3

x10y3 x11y3

x12y3 x13y3 x14y3 x15y3 x16y3

— 9 —

Page 12

3-2. CIRCUIT DIAGRAM

FET

✽12

Rant3

Rant1

Rant2

REG

IN1 1

Creg

IN2 PON 2

AGC

VCC 3

Cagc

FIL1

OUT1

Cf13

FIL2

OUT2 5

Cf12

Cxt

TCO

GND

Rpd

HOLD

REC 7

DEC2

DEC1 8

Rcp

Ccp9

Crl2

Crh3

Crh1

RP1RP2

SCR

SCIN

CSB

✽1

✽1 ✽1

SDO SCK

✽1

SDI

LC1 - - - LC5

Crl3

Crl1

Crh2

ANT

VPM

✽1

LSI

TOTAL 106PINS

BONDING 101PINS

Rxt3

Rxt2

KC4

KC2

✽10

Xtal3

Xtal2

Cbat

Rbat

✽2

KC3

KC1

✽11

VDD1

VDSP

VCH VDD3 VC1 VC2

VHF

VC3 VC4

LL1

Tr1

Di2

PZ Z

(N trimming)

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

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

✽ 9. Normal Low

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

✽ 11. KC3 is used in this module.

✽ 6. Short (Soldering)

✽ 12. Rant1 are not used in this module.

(R trimming)

✽ 1. No bonding

✽ 2. GND-KI7: Open (No Soldering)

KC1-KI6: Open (No Soldering)

KC3-KI6: Open (No Soldering)

✽ 3. Latch type key

✽ 4. Short (Soldering)

✽ 5. Inclination sensor

✽8

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

L1 - - - - L55

T1T2T3

KI1

KI2

KI3

KI4

BACK

FRONT

NCNCNC

VCC

ENB

✽7

GNDB

INV

GND

ELD

RT1

LL2

CIL

RT2

Rel

BAT

GND VDD2

Di1

✽9

✽3

✽3✽3✽3

KI5

KI9

KI6

KI7

KI8

✽5

✽2

✽6✽6✽4✽4✽4

✽3

XTB

Xtal

VSC

LD1

— 10 —

Page 13

3-3. CHECKING TERMINALS AND COMPONENTS

GND

Short pad for R trimming

Short pad for N trimming

KI1

GND

GND N2

GND

KI4

ELD

GND

SCINSCR

SCINGND

VSC

KC2

15.PCB ASS'Y (76405963)

N1GND

GNDB

Xtal3 4

Xtal2 4

Short pad for switching modules

GNDKI8

KI7

GND

KI6 KC1

KI6

VC1

VC2

VC3

VDSP

VHF

VDD3

VDD1

VDD2

KI5

KC3

VC4

GND

KI3

Cushion 6 (72110064)

Sensor/Tilt (71055275)

Cushion 6 (72110064)

Oscillator/Crystal (71106323)

Capacitor/Trimmer (10097666)

VSC

VDD2

GND VSC

S12

KI5

KI8

Xtal3

VCH

GND

KI3

VDD2

VDD2 R1

XT XTB

LL1

VC1

VDSP

GND

LL1

GND

LL1

Xtal27

GND

VDD2

GND

GND5432

121314

KI9

GND

KI9

GND

KC2

KC4

GND12GND

GND

VSC

RT1

RT2

KI1

GND

RT2

KI1

VDD2

LD1

GND

VDD2

RT1

LD1

KI4

CIL

ELD

GND

ELD

KI2

Cushion 506 (72119631)

— 11 —

Page 14

4. EXPLODED VIEW: MODULE QW-2819

18 (10093601)

19 (72300805)

20 (10093602) 11 (10093600)

13 (10127341)

8 (10093603)

6 (10058521)

11 (10093600)

Casing parts: Spring/coil 3 (10083365)

7 (10105010) 1 (10065657)

Battery Storage (CTL1616)

15 (76405963)

PCB ass'y

9 (72311777)

16 (10123230)

10 (10083364)

12 (10065664)

— 12 —

Page 15

5. PARTS LIST: MODULE QW-2819

(-)

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 ---------------------------------------- Very Important B Rank ---------------------------------------- Important C Rank ---------------------------------------

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

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

Less important

10130264

1 10065657 BATTERY/STORAGE CTL1616 2 10097666 CAPACITOR/TRIMMER CTZ2E-25C-W2-P 3 10083365 CONTACT/BATTERY 4 72110064 5 72119631 6 10058521 7 10105010 8 10093603 EL YEL-2608-A-00

9 72311777 HOLDER 1381 Q456843-1 10 10083364 11 10093600 12 10065664

10127341

13 14 71106323 OSCILLATOR/CRYSTAL DT-26S11

76405963

15 16 10123230 17 71055275 SENSOR/TILT TS-2418-P 18 10093601 19 72300805 SPRING/COIL 1405-1 Q453652-1 20 10093602 SPRING/COIL 2608 Q470488-1

For the

MODULE/WITHOUT MOVEMENT

1673 Q358740A-2 CUSHION 6 CUSHION 506 CUSHION 2397-1 CUSHION 2608

HOLDER/BATTERY 2154 INTERCONNECTOR/ 2608 LABEL/ 2368 LCD

PCB ASS'Y SCREW/FLAT2730

SPACER/ 2608

rices and minimum order/supply quantities of the above parts, refer to the Parts Price List P.P.L.-620.

QW-2819ATSA-05 MTG-950BDJ-9

Q4914A-1 Q49364-1 Q468515-1 Q471029-1

Q254197A-2 Q470297-1 Q468543A-1 C2819-05PN QW-2819ATSA-05

Q255861*1ATTK QW-2819ATSA-05 RJQ513792-001V01

Q470438-1

QW-2819ATSA-05 QW-2819ATSA-05 QW-2819ATSA-05 QW-2819ATSA-05 QW-2819ATSA-05 QW-2819ATSA-05 QW-2819ATSA-05 QW-2819ATSA-05 QW-2819ATSA-05 QW-2819ATSA-05 QW-2819ATSA-05 QW-2819ATSA-05

QW-2819ATSA-05 QW-2819ATSA-05

QW-2819ATSA-05 QW-2819ATSA-05 QW-2819ATSA-05 QW-2819ATSA-05

1A 1B

1B 1C 3C 2C 1C 2C 1A 1C 1C 2C 1C 1A 1B 1A 1B 1B 1C 2B 3B

Notes: Q - Used quantity

R - Rank

— 13 —

Page 16

6. PRECAUTIONS FOR REPAIR: MODULE QW-2819 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.

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 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, 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-2819

— 14 —

Page 17

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

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 "8888" 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 "8888" 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°

— 15 —

Appear "8888" on display.

More than 40°

Page 18

7. TROUBLESHOOTING: MODULE QW-2819

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

Check your location, refer to the operation manual.

Replace theantenna ass'y

Yes

Signal

reception OK?

There is a possibility of location bad.

— 16 —

Page 19

CASIO COMPUTER CO.,LTD.

Overseas Service Division

Shibuya-ku, Tokyo 151-8543, Japan

6-2, Hon-machi 1-Chome