Casio BGC-110B, BG-152, QW-2292, BG-1100 series Service Manual And Parts List

(WITHOUT PRICE)

SERVICE MANUAL

& PARTS LIST

REF. NO. S/M-692

AUGUST 2000

QW-2174
QW-2177

MODULE NO.

R

BGC-110B
(QW-2174)

BG-152

(QW-2177)

- 1 -

CONTENTS

1. SPECIFICATIONS : QW-2174 / 2177

1. SPECIFICATIONS • • • • • • • • • • • • • • • • • • • • • • • • • • 1

2. OPERATION CHART • • • • • • • • • • • • • • • • • • • • • • • • 2

3. DRAWINGS • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 6
3-1. BLOCK DIAGRAM • • • • • • • • • • • • • • • • • • • • • • • • 7
3-2. CHECKING TERMINALS AND COMPONENTS• • • • 9

4. EXPLODED VIEW • • • • • • • • • • • • • • • • • • • • • • • • • • 10

5. PARTS LIST • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 11

6. PRECAUTIONS FOR REPAIR • • • • • • • • • • • • • • • • • • 12
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE • • 12
6-2. ACCURACY CHECKING • • • • • • • • • • • • • • • • • • • 12

Function

QW-2174

• Shock resistant

• Electro-luminescent backlight
Afterglow

• World time
27 time zones (40 cities), city code display, daylight
saving on/off

• Memory function
Memory capacity: Up to 20 sets of data, each set 
including; Name (8 characters) and telephone
number (12 digits)

• Day Countdown with 5 Memories Automatically
counts down the days from the current date to a
target date. A mark appears on the display to let you
know when a target date is reached.

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

• Daily alarm

• Hourly time signal

• Auto-calendar (to year 2039)

• 12/24-hour formats 

• Regular timekeeping: Hour, minutes, seconds,
am/pm, month, date, day

QW-2177

• Shock resistant

• Electro-luminescent backlight
Afterglow

• Memory function
Memory capacity: Up to 10 sets of data, each set 
including; Name (8 characters) and telephone
number (12 digits)

• Day Countdown with 10 Memories Automatically
counts down the days from the current date to a
target date. A mark appears on the display to let you
know when a target date is reached.

• Countdown timer
Input range: 1 minute to60 minutes
Unit: 1 second

• Daily alarm

• Hourly time signal

• Auto-calendar (to year 2039)

• 12/24-hour formats 

• Regular timekeeping: Hour, minutes, seconds,
am/pm, month, date, day, daylight saving on/off

Item Detail Item Detail

Battery CR1616 Accuracy ±15sec./month
Battery life Approx. 24 months Accuracy setting system Trimmer capacitor
Current QW-2174 0.815 µA maximum Accuracy checking See page 12
consumption QW-2177 1.46 µA maximum Accuracy setting +0.25~+0.35sec./day
Alarm system Piezo plate on Back cover

- 2 -

2. OPERATION CHART : MODULE QW-2174

GENERAL GUIDE

•Press to change from mode to mode.

•Pressing in any mode illuminates the display for about 3 seconds.

•If you do not perform any operation for a few minutes while a setting screen (with flashing digits) is on the display, the watch automatically exits the setting screen.

•If you do not perform any operation for a few minutes in the Day Counter Mode or Telememo Mode, the watch automatically reverts to the normal timekeeping screen.

•When making settings, note that you can scroll only forward, you cannot scroll back. This means that if you go past the setting you want, you must scroll through all of the available
settings again until the one you want reappears.

Timekeeping Mode

World Time Mode

Day Counter Mode

Telememo Mode Stopwatch Mode

Press

.

Alarm Mode

TIMEKEEPING MODE

•Press to toggle the display between the day of the week and month, as shown
below.

Press .

Hour

Minutes

City code

Seconds

DST on
indicator

Day

Month

Day of week

•Hold down to toggle between 12-hour and 24-hour timekeeping. Note that press­ing also switches the display between the day of the week and month screens
as described above.

•With 12-hour timekeeping, times between midnight and noon are indicated by A
(am), while times between noon and midnight are indicated by P (pm).

•The A and P indicators do not appear when you are using 24-hour timekeeping.

To set the time and date

1.While in the Timekeeping Mode, hold down until the seconds digits flash on the

display, indicating the setting screen.

2.Press to move the flashing in the sequence shown below.

DST

Seconds

Month

Day

City code

Minutes

Year

Hour

3. While the seconds setting is selected (flashing), press to reset it to 00. If you

press while the seconds setting is in the range of 30 to 59, the seconds are
reset to 00 and 1 is added to the minutes. If the seconds setting is in the range of
00 to 29, the minutes count is unchanged.

•While the DST

setting is selected (DST on indicator is flashing), press to toggle

it on (ON) and off (OF).

•The DST on/off setting you make for the Timekeeping Mode does not affect the
World Time Mode.

•While the city codes setting is selected, use to scroll thorough the available
codes until the one you want to use as your home time city is displayed.

•For full information on city codes, see the “CITY CODE TABLE”.

4.While any other setting is selected (flashing), press to increase it. Holding down

changes the setting at high speed.

5.After you make the settings you want, press to exit the setting screen.

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

•The date can be set within the range of January 1, 2000 to December 31, 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 the replacement of the watch’s battery.
Daylight Saving Time (DST), which is also sometimes called “summer time” ad­vances the time for one hour, as is the custom in some areas during the summer.
Remember that not all countries or even local areas use Daylight Saving Time.

ABOUT THE BACKLIGHT

•Press to illuminate the display for about three seconds.

•The backlight of this watch employs an electro-luminescent (EL) light, which loses
its illuminating power after very long term use.

•Frequent use of the backlight shortens the battery life.

•The watch emits an audible sound whenever the display is illuminated. This does
not indicate malfunction of the watch.

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

•The backlight automatically turns off whenever an alarm sounds.

WORLD TIME MODE

Hour : Minutes

Seconds

DST on indicator

Day

Day of week

Mode indicator

City code

Month

[Month-day display]

The World Time Mode shows the current time in 40 cities (27 time zones) around the
world. The lower part of the display shows either the day of the week and day, or the
month and day. The format used is the one you select in the Timekeeping Mode
before entering the World Time Mode.

•For full information on city codes, see the “CITY CODE TABLE”.

•The time setting of the Timekeeping Mode and the World Time Mode are synchro­nized, except for the daylight saving time (summer time) setting. Whenever you
change the time setting for any city in the Timekeeping Mode, the settings of all
World Time cities are changed accordingly.

•The World Time Mode has its own daylight saving time (summer time) setting.

To select a World Time City and view its time

In the World Time Mode, press to scroll forward through the city codes (time
zones). Holding down scrolls at high speed.

•You can set up an alarm in the Alarm Mode so it operates based on the current time
in a city you specify in the World Time Mode.

Daylight Saving Time (DST)

Daylight Saving Time automatically advances the time setting by one hour from Stan-
dard Time. You cannot make individual Daylight Saving Time settings for each city
code (time zone). Turning on Daylight Saving Time affects all World Time time zones.
Remember that not all countries or even local areas use Daylight Saving Time.

To switch between Standard Time and Daylight Saving Time

In the World Time Mode, hold down toggle between Daylight Saving Time and
Standard Time.

Hold down .

DST on indicator

DST OFF

DST ON

DAY COUNTER MODE

The Day Counter Mode lets you count the number of days from the Timekeeping
Mode’s current date to a specific target date.
This watch has five day counters. You can assign text titles up to eight characters
long to each of the five Day Counters. Whenever the date specified by any one of the
day counters matches the date of the Timekeeping Mode (regardless of the day
counter’s year setting), the DAYS indicator flashes on the Timekeeping Mode. In the
Day Counter Mode, the DAYS indicator flashes on the screen of the particular day
counter whose date matches the date of the Timekeeping Mode.
The initial default date for all Day Counters is January 1, 2001.

Year

Month - Day

Target date

Numbers of days

Text

DAYS indicator

Mode
indicator

Alternate at the
1-second interval.

•The day counter on the display when you exit the Day Counter Mode appears first
the next time you enter the Day Counter Mode.

Recalling Day Counter Data

In the Day Counter Mode, press to scroll through the day counters.

C

C

C

C

C

C

C

C

C

C

C

C

C

L

L

B

B

B

A

A

A

A

- 3 -

To set the target date

1.In the Day Counter Mode, press to display the day counter you want to set.

2.Hold down until the flashing cursor appears in the text area. This indicates the
input screen.

3.Press to move the flashing in the sequence shown below.

Press .

1st digit

Day

8th digit

YearMonth

4. While the cursor is in the text area, use to scroll through characters at the
current cursor position. Characters scroll in the sequence shown below. Holding
down scrolls at high speed.

Press .

(Space)

A to Z 0 to 9 . (Period) - (Hyphen)

5.While the cursor is in the date area, press to scroll through digits at the current
cursor position. Holding down scrolls at high speed.

Press and at the same time, and the message “CLR” appears in the display.
The characters in the text area is cleared and today’s date is set as the target date.
You can then make any changes in the date you want.

6.After you make the settings you want, press to exit the input screen.

The date can be set within the range of January 1, 1940 to December 31, 2039.
The text area display can show only three characters at a time. Longer text scrolls
continuously from right to left. The symbol “

” indicates that the character to the left

is the last, and the character to the right is first.

TELEMEMO MODE

The Telememo Mode lets you store up to 20 records, each
with a name (up to eight characters) and a phone number
(up to 12 digits). You can recall records by scrolling through
them on the display.

The page number on the display when you exit the Tele­memo Mode appears first the next time you enter the
Telememo Mode.

To input a new Telememo record

1. In the Telememo Mode, press to display the page
number of the record where you want to input data.

2.Hold down and a cursor appears on the text area.

3.Use to scroll through characters at the current cursor position. Characters scroll
in the sequence shown below.

Press .

(Space)

A to Z 0 to 9 . (Period) - (Hyphen)

Holding down scrolls at high speed.

4. When the character you want is at the current cursor position, press to move
the cursor to the right.

Press .

1st digit

8th digit

12th digit

1st digit

Text area
Number area

5.Repeat the steps 3 and 4 to input the rest of the characters.

You can input up to eight characters for the name, though only three characters are
visible at a time. If the name you input has fewer than eight characters, use to
move the cursor to the eighth space (which means you would press three times
after inputting a five-character name).

6.After you input the name, use to move the cursor to the number area.

Pressing while the cursor is located at the eighth character of the text area
advances to the number area. Pressing while the cursor is located at the 12th
digit of the number area returns to the text area.

7.Use to scroll through characters (hyphen, numbers, space) at the current cur­sor position on the number area. Characters scroll in the sequence shown below.

Press .

(Space)

0 to 9

-

(Hyphen)

Holding down scrolls characters at high speed.

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

9.Repeat steps 7 and 8 to input the rest of the numbers you want.

You can input up to 12 digits for the number.

10. After inputting the name and number of the record, press to store it and exit

the setting screen.
The display can show only three name characters at a time. Longer names scrolls
continuously from right to left. The symbol “

” indicates that the character to the left
is the last, and the character to the right is the first.
The number area can show up to six digits at one time. If a number has more than
six digits, the display automatically switched between the first six digits (counting
forward from the first digit) and the last six digits (counting backward from the last
digit) of the number. This means that if a number is 12 digits long, the number area
switches between the first six digits and the last six digits. If a number is seven
digits long, the number area switches between digits 1 through 6, and 2 through 7.

To recall Telememo data

In the Telememo Mode, press to scroll forward through the stored records.

Holding down scrolls at high speed.

To edit Telememo data items

1.In the Telememo Mode, use to display the data you want to edit.

2.Hold down until the cursor appears in the display.

3.Use to move the cursor to the character you want to change.

4.Use to change the character.
See step 3 of “To input a new Telememo record” for information on inputting name
characters, and step 7 for inputting number characters.

5.After making the changes that you want, press to store them and exit the set-

ting screen.

Mode indicator

Page number

Text area

Number area

To delete a Telememo record

1.In the Telememo Mode, use to display the record you want to delete.

2.Hold down until the cursor appears in the display.

3. Press and at the same time. The message “CLR” appears in the display,
indicating that the record was deleted.

After the record is deleted, the cursor appears in the text area, ready for input.

4.Input a new record or press to exit the setting screen.

STOPWATCH MODE

The Stopwatch Mode lets you measure elapsed time, split
times, and two finishes. The range of the stopwatch is 23
hours, 59 minutes, 59.99 seconds.
Changing to another mode while a split time is on the dis­play clears the split time.

Elapsed time measurement

Start

Stop Re-start Stop Clear

Start

Split Split release Stop Clear

Start

Split Stop Split release Clear

Split time measurement

Split time and 1st-2nd place times

First runner
finishes.

Second runner
finishes.
Record time of
first runner.

Record time of
second runner.

ALARM MODE

When the Daily Alarm is turned on, the alarm sounds for
20 seconds at the preset time each day. Press any button
to stop the alarm after it starts to sound. When the Hourly
Time Signal is turned on, the watch beeps every hour on
the hour.

You can also specify a time zone for the Daily Alarm.
The alarm sounds when the alarm time matches the
current time in the time zone you specify.
The Hourly Time Signal also sounds in accordance with
the time zone you specify.
If the DST on indicator is on the display in the Alarm
Mode, it means that Daylight Saving Time (summer time)
is turned on for the time zone whose alarm you are set­ting.

To set the alarm time

1. While in the Alarm Mode, hold down until the city code flash on the display,
indicating the setting screen.

At this time, the alarm is turned on automatically.

2.Press to move the flashing in the sequence shown below.

Time zone MinutesHour

3. While the time zone is flashing, press to toggle between the city codes which
you selected in the Timekeeping Mode and the one you selected in the World Time
Mode.

4. While the hour or minutes digits of the alarm time are flashing, press to in­crease them. Holding down changes the setting at high speed.

5.After you make the settings you want, press to exit the setting screen.

The format (12-hour and 24-hour) of the alarm time matches the format you select
in the Timekeeping Mode.
When setting the alarm time using the 12-hour format, take care to set the time
correctly as morning or afternoon.
Changing the Home Time zone or the World Time city after setting an alarm causes
the alarm time to change as well.

To stop the alarm

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

To turn the Daily Alarm or the Hourly Time Signal on and off

Press while in the Alarm Mode to change the status of the Daily Alarm and Hourly
Time Signal in the following sequence.

Hourly Time
Signal only

Daily Alarm
only

Both OFFBoth ON

To test the alarm

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

Holding down to test the alarm also changes the Daily Alarm and Hourly Time
Signal on/off settings.

Mode indicator

Hours : Minutes

1/100 second

Seconds

Mode indicator

Hour : Minutes

Alarm on indicator

Hourly time signal on
indicator

Time zone

C

C

C

C

C

C

C

C

C

C

C

C

C

C

C

C

C

C

C

C

C

C

C

C

C

C

L

L

B

B

B

B

B

B

B

B

B

B

B

B

A

A

A

A

A

A

A

A

A

A

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

•

- 4 -

CITY CODE TABLE

–11 PAGO PAGOPPG

PAR

LON

RIO

DXB

THR

JED

GUM

ADL

TYO

WLG

SEL

NOU

HKG

SIN

BKK

SYD

RGN

DAC

DEL

JRS

CAI

MLE

IST

KHI

KBL

CCS

BER

ROM

MIL

NYC

MIA

CHI

MEX

DEN

LAX

SFO

YVR

ANC

HLN

—
–10 HONOLULU PAPEETE
–9 ANCHORAGE NOME

–8

VANCOUVER

LAS VEGAS, SEATTLE, DAWSON CITY

SAN FRANCISCO
LOS ANGELES

–7 DENVER EL PASO, EDMONTON
–6

MEXICO CITY

HOUSTON, DALLAS/FORT WORTH,

CHICAGO

NEW ORLEANS, WINNIPEG
–5

MIAMI

MONTREAL, DETROIT, BOSTON,

NEW YORK

PANAMA CITY, HAVANA, LIMA, BOGOTA
–4 CARACAS LA PAZ, SANTIAGO, PORT OF SPAIN

–3

RIO DE JANEIRO

SAO PAULO, BUENOS AIRES, BRASILIA,

MONTEVIDEO
+0 LONDON

DUBLIN, LISBON, CASABLANCA, DAKAR,

ABIDJAN

+1

PARIS

MADRID, FRANKFURT, AMSTERDAM

,

MILAN

VIENNA ALGIERS, STOCKHOLM, HAMBURG

ROME

BERLIN

+2

ISTANBUL

ATHENS, HELSINKI, BEIRUT, DAMASCUS,

CAIRO

CAPE TOWN

JERUSALEM

+3 JEDDAH

MOSCOW, KUWAIT, RIYADH, ADEN,

ADDIS ABABA, NAIROBI
+3.5 TEHRAN SHIRAZ
+4 DUBAI ABU DHABI, MUSCAT
+4.5 KABUL —

+5

KARACHI

—

MALE
+5.5 DELHI MUMBAI, CALCUTTA
+6 DHAKA COLOMBO
+6.5 YANGON —

+7

BANGKOK

JAKARTA, PHNOM PENH, HANOI,
VIENTIANE

+8

SINGAPORE

KUALA LUMPUR, TAIPEI, PERTHBEIJING,

HONG KONG

MANILA, ULAANBAATAR

+9

SEOUL

PYONGYANG

TOKYO

+9.5 ADELAIDE DARWIN
+10

GUAM

MELBOURNE, RABAUL

SYDNEY
+11 NOUMEA PORT VILA
+12 WELLINGTON CHRISTCHURCH, NADI, NAURU ISLAND

GMT City

City Other major cities in the same time zone

differential

Code

*Based on data as of December 1999.