Casio G-2400 Service Manual & Parts List

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Page 1

SERVICE MANUAL

& PARTS LIST

REF. NO. S/M-710

SEP. 2000

MODULE NO.

QW-2223

G-2400

(WITHOUT PRICE)

Page 2

CONTENTS

1. SPECIFICATIONS: QW-2223..................................................................... 1

2. OPERATION CHART: QW-2223................................................................ 2

3. DRAWINGS: QW-2223

3-1. BLOCK DIAGRAMS ........................................................................... 5

3-2. CHECKING TERMINALS AND COMPONENT .................................. 7

4. EXPLODED VIEW: QW-2223..................................................................... 8

5. PARTS LIST: QW-2223.............................................................................. 9

6. PRECAUTIONS FOR REPAIR: QW-2223

6-1. AC (ALL CLEAR) AND REMOVING OF MODULE ........................... 10

6-2. ACCURACY CHECKING ................................................................... 10

1. SPECIFICATIONS: QW-2223

Item Detail

Page

Battery CR2016 Battery life Approx. 2 years Current consumption 1.57 µA maximum Alarm system Piezo plate on Back cover Accuracy ±15 sec./month Accuracy setting system Trimmer capacitor Accuracy checking See page 10 Functions

•Shock resistant (G-SHOCK)

•Electro-luminescent backlight Auto light switch, afterglow

•World time Current time in 27 cities (29 time zones), city code display, daylight

saving on/off

• 1/100-second stopwatch Measuring capacity: 99:59'59'' Measuring modes: Elapsed time, lap/split time Memory capacity: 500 lap/split time records with lap/split number

• Daily alarm

• Hourly time signal

• Auto-calender (to year 2039)

• 12/24-hour formats

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

— 1 —

Page 3

2. OPERATION CHART: QW-2223

Mode indicator

Minutes

Seconds

1/100 second

RUN number

• Press C to change from mode to mode.

• Pressing L in any mode (except Stopwatch Mode) illuminates the display for about 2 seconds.

• Pressing D in the Stopwatch Mode illuminates the display for about 2 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.

Timekeeping Mode Stopwatch Mode Recall Mode

Press C.

GENERAL GUIDE

World Time Mode

Alarm Mode

TIMEKEEPING MODE

DST on indicator

Minutes

Hour

Month

Day

PM indicator

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

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

• This watch lets you select one of 27 city codes as your home time city.

• Note that if you want to change your home time city, you must change the city code

• While the DST setting is selected, press D to toggle it on (

• The DST on/off setting you make for the city code that is currently selected in the

• While the city codes setting is selected, use D(+) and B(–) to scroll through the

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

• While the 12/24-hour setting is selected, press D to toggle it between 12 and 24.

• While any other setting is selected (flashing), press D(+) or B(–) to change it.

4.After you make the settings you want, press A 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 dif-

∗

Day of week

Seconds

Day

press D 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.

first, and then change the DST∗ setting.

Timekeeping Mode (your home time city) is also applied to that city code in the World Time Mode.

available codes until the one you want to use as your home time city is displayed.

Holding down either button changes the setting at high speed.

ferent 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.

• With 12-hour timekeeping, times between noon and midnight are indicated by P (pm), while no indicator appears

Seconds

for times between midnight and noon.

• No indicator appears for any time while 24-hour timekeeping is selected.

To set the time and date

1.While in the Timekeeping Mode, hold down A until the

seconds digits flash on the display, indicating the setting screen.

DST

Month

Year

City code

12/24

Hour

Minutes

) and off ( ).

ABOUT THE BACKLIGHT

• Pressing L in any mode (except Stopwatch Mode) illuminates the display for about 2 seconds.

• Pressing D in the Stopwatch Mode illuminates the display for about 2 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.

STOPWATCH MODE

About Laps and Splits

Lap Times

A lap time is the amount of time it takes for you to get from one point to another during a race. When running on a track, for example, you can time how long it takes you to complete each lap.

Split Times

A split time is the time from the start of a race until the point that the split is measured. For example, you could measure split times to determine how long it takes for you to get from the starting line to the 5-kilometer mark, the 10-kilometer mark, etc.

The Stopwatch Mode lets you measure elapsed time, lap times, and split times. The range of stopwatch is 99 hours, 59 minutes, 59 seconds. You can use the EL backlight by pressing D at any time while the stopwatch is operating. The Stopwatch Mode also lets you store the lap times for multiple laps in memory for later recall when you need them. This watch manages data according to RUN, which are made up of multiple data records. All data stored from the start of the stopwatch operation to the end of the stopwatch operation makes up one RUN. Within a RUN, each lap/split operation stores one record. The watch can hold up to 500 data records in memory. The final time recorded when you stop the stopwatch operation is recorded as the final lap time.

The first hour of a stopwatch operation is measured in units of 1/100 second. After that, elapsed time is measured in units of one second.

[Up to 1 hour] [After 1 hour]

Split time

Lap time

Minutes

The following operation causes one RUN, which consists of three data records, to be stored into memory.

Start

If you do not perform a lap/split operation, the RUN is made up of a single data record.

Start

To measure elapsed time

1.Press L to start the stopwatch.

2.Press B to stop the stopwatch.

• You can resume the elapsed time measurement operation by pressing L again.

• You can stop the elapsed time measurement operation by pressing B again.

3.While the elapsed time is stopped on the display, press B to clear the stopwatch to all zeros.

1/100 second

Seconds

1 set 1 set

1st Lap/Split

1 RUN

1 set = 1 RUN

Hours

2nd Lap/Split

Minutes

Seconds

1 set

Split time

Lap time

Data storedData storedData stored

Stop and Clear

Data stored

Stop and Clear

— 2 —

Page 4

To measure lap and split times

Hour Minutes

1.Press L to start the stopwatch.

2.Press L, the split time and lap time for the lap whose time you just measured appears for about five seconds in the display. Stopwatch timing continues internally.

• After the above, the display automatically switches back to the normal stopwatch

(elapsed time) display. You can repeat the above step as many times as you like, until 500 records are stored.

• When memory becomes full (after 500 records are stored), the next store operation

causes the message “FULL” to appear on the display. The watch does not record the new data. Always check how much memory capacity you have left before you start recording important time data. (Though there are no way to display how much memory is left.)

3.Press B to stop elapsed time measurement. The time on the display is stored as the final lap time.

4.Press B again to reset the stopwatch to all zeros.

❈ What you should do after you complete a RUN depends on what you want to do

with the data from the just-completed RUN, as described below.

To save the data of a just-completed RUN

After resetting the stopwatch to all zeros, hold down B until the RUN number increases by one. This indicates that the next stopwatch operation will be stored as a different RUN, leaving the data of the previous RUN in memory as well.

To delete the data of a just-completed RUN

You do not need to do anything. The next time you start a stopwatch operation, the new RUN data will replace the data of the currently displayed RUN number.

To delete the data of a just-completed RUN and one RUN before it

While the stopwatch is reset to all zeros, hold down A until the RUN number decreases by one. The next time you start a stopwatch operation, the new RUN data will replace the data of the currently displayed RUN number.

Deleting Data

Note that you can delete the data for the newest RUN only. If there is data for five RUN in memory, for example, you could delete the data for RUN 5 only. Then you

could delete the data for RUN 4, RUN 3, and so on. You can use the Recall Mode to delete all RUN data.

• Holding down A in the Stopwatch Mode causes the RUN number to decrease by

one. The next time you start a stopwatch operation, the new RUN data will replace the data of the currently displayed RUN number.

It may take a rather long time to perform delete or recall operations in the Stopwatch Mode or Recall Mode when there is a lot of data stored in memory.

RECALL MODE

Mode indicator

RUN number

Measurement date

2.When the RUN number for the data you want to see is on the display, press D to switch to its Best Lap display. Now, each press of D scrolls the data in lap/split number sequence. Holding down D scrolls at high speed.

RUN No. & date

• The watch can record up to 341 best laps. The data for any RUN after the 341st is

displayed without best lap data.

To delete all RUN data

Hold down A until the watch emits a beep and the message “CLR” flashes on the display. That indicate the all of data is cleared.

• You cannot delete data for a particular record or RUN in the Recall Mode. You only

can delete all data currently stored in memory.

Important!

• You cannot delete data in the Recall Mode unless the stopwatch is reset to all

zeros. If it isn’t, enter the Stopwatch Mode, reset to all zeros, and then return to the Recall Mode to delete the data.

The message ERROR flashing on the display indicates that the battery is about to go dead. When this happens, request battery replacement from your original retailer or from an authorized CASIO distributor. You will not be able to enter the Stopwatch Mode and Recall Mode while ERROR is flashing on the display.

The Recall Mode is used to recall and delete data that is stored by Stopwatch Mode operations.

Recalling Laps and Splits

1.In the Recall Mode, press B to scroll through RUN numbers, from the newest to the oldest (number 1). The data includes the measurement date. (If the elapsed time operation extends over two different days, only the start date is recorded.)

Newest

RUN

• RUN numbers are assigned automatically to each RUN,

in sequence with the oldest RUN being 1, the next oldest 2, etc.

Best Lap

ERROR Message

Next newest

RUN

Lap 2Lap 1

RUN 1

Final Lap

City code

DST on indicator

To select a World Time City and view its time

In the World Time Mode, press D(+) or B(–) to scroll through the city codes (time zones). Holding down either button scrolls at high speed.

Daylight Saving Time (DST)

Daylight Saving Time automatically advances the time setting by one hour from Standard Time. You can make individual Daylight Saving Time settings for each city code (time zone). Remember that not all countries or even local areas use Daylight Saving Time.

To switch between Standard Time and Daylight Saving Time

1. In the World Time Mode, use D(+) or B(–) to display the city code (time zone) whose standard time/daylight saving time setting you want to change.

2.Hold down A to toggle between Daylight Saving Time and Standard Time.

• The DST indicator appears on the display whenever you display a city code for

which daylight saving time is turned on.

World time

Current time of your home time

The World Time Mode shows you the current time in 27 cities (30 time zones) around the world.

• 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. Whenever you change the time setting for any city in the Timekeeping Mode, the settings of all World Time cities are changed accordingly. The DST on/off setting, however, must be specified in- dividually for each World Time city.

• The format (12-hour and 24-hour) of the World Time matches the format you select for Timekeeping Mode.

ALARM MODE

Mode indicator

WORLD TIME MODE

Hour : Minutes

DST on indicator

Current time

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.

To set the alarm time

1.Hold down A until the hour digits flash on the display, indicating the setting screen.

• At this time, the alarm is turned on automatically.

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

3.Use D(+) and B(–) to change the setting. Holding down either button changes the setting at high speed.

4.After you set the alarm time, press A 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.

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

Both OFFBoth ON

To test the alarm

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

• Holding down D to test the alarm also changes the Daily Alarm and Hourly Time

Signal on/off settings.

Daily Alarm only

Alarm on indicator Hourly time signal

on indicator

Hourly Time Signal only

— 3 —

Page 5

CITY CODE TABLE

GMT City

differential

–11 - - - - - PAGO PAGO –10 –9

–8 –7 –6

–5 –4 –3 –2 - - - - -

–1 - - - - - PRAIA +0

+3 +3.5

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

+8 +9

+9.5 +10 +11 +12

*Based on data as of December 1999.

City Other major cities in the same time zone

Code

HNLHNL

HNL

HONOLULU PAPEETE

HNLHNL

ANCANC

ANC

ANCHORAGE NOME

ANCANC

LAXLAX

LAX

LOS ANGELES

LAXLAX

DENDEN

DEN

DENVER EL PASO, EDMONTON

DENDEN

CHICHI

CHI

CHICAGO

CHICHI

NYCNYC

NYC

NEW YORK

NYCNYC

CCSCCS

CCS

CARACAS LA PAZ, SANTIAGO, PORT OF SPAIN

CCSCCS

RIORIO

RIO

RIO DE JANEIRO

RIORIO

GMTGMT

GMT

GMTGMT

LONLON

LON

LONDON

LONLON

PARPAR

PAR

PARIS ALGIERS, HAMBURG, FRANKFURT, VIENNA,

PARPAR

CAICAI

CAI

CAIRO

CAICAI

JRSJRS

JRS

JERUSALEM

JRSJRS

JEDJED

JED

JEDDAH

JEDJED

THRTHR

THR

TEHRAN SHIRAZ

THRTHR

DXBDXB

DXB

DUBAI ABU DHABI, MUSCAT

DXBDXB

KBLKBL

KBL

KABUL - -

KBLKBL

KHIKHI

KHI

KARACHI MALE

KHIKHI

DELDEL

DEL

DELHI MUMBAI, CALCUTTA

DELDEL

DACDAC

DAC

DHAKA COLOMBO

DACDAC

RGNRGN

RGN

YANGON - -

RGNRGN

BKKBKK

BKK

BANGKOK

BKKBKK

HKGHKG

HKG

HONG KONG

HKGHKG

TYOTYO

TYO

TOKYO SEOUL, PYONGYANG

TYOTYO

ADLADL

ADL

ADELAIDE DARWIN

ADLADL

SYDSYD

SYD

SYDNEY MELBOURNE, GUAM, RABAUL

SYDSYD

NOUNOU

NOU

NOUMEA PORT VILA

NOUNOU

WLGWLG

WLG

WELLINGTON CHRISTCHURCH, NADI, NAURU ISLAND

WLGWLG

SAN FRANCISCO, LAS VEGAS, VANCOUVER, SEATTLE, DAWSON CITY

HOUSTON, DALLAS/FORT WORTH, NEW ORLEANS, MEXICO CITY, WINNIPEG

MONTREAL, DETROIT, MIAMI, BOSTON, PANAMA CITY, HAVANA, LIMA, BOGOTA

SAO PAULO, BUENOS AIRES, BRASILIA, MONTEVIDEO

DUBLIN, LISBON, CASABLANCA, DAKAR, ABIDJAN

MILAN, ROME, MADRID, AMSTERDAM,

STOCKHOLM, BERLIN ATHENS, HELSINKI, ISTANBUL, BEIRUT,

DAMASCUS, CAPE TOWN MOSCOW, KUWAIT, RIYADH, ADEN,

ADDIS ABABA, NAIROBI

JAKARTA, PHNOM PENH, HANOI, VIENTIANE SINGAPORE, KUALA LUMPUR, BEIJING,

TAIPEI, MANILA, PERTH, ULAANBAATAR

— 4 —

Page 6

3. DRAWINGS: QW-2223 3-1. BLOCK DIAGRAMS

PM0

L 4

L 6

L 5

k4 k0

DST0

x0 x18 x19 x20

PM1

DST1

L 9

L 8

L 7

L10

k1 k8

RECALL

L11

MIN

hyp

COL

L16

k9 k5

AUTOEL

L17

L18

L19

L20

L21

L22

L23

L24

SEC

L15

L14

L13

L12

L25

L26

L27

L28

L29

L30

L31

L32

ALMLAPSPL

x26

SIG

SEG.

COM.

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

L C 1 X1Y1 X0Y1 X0Y4 X1Y4 X2Y4 X3Y4 X4Y4 X5Y4 X6Y4 X7Y4 X8Y4 X9Y4

X10Y4 X11Y4 X12Y4 X13Y4 X14Y4 X15Y4 X16Y4 X17Y4 X18Y4 X19Y2 X20Y3 X21Y3 X22Y3 X23Y3 X24Y3

LC5

L C 2 X1Y0 X0Y0 X0Y5 X1Y5 X2Y5 X3Y5 X4Y5 X5Y5 X6Y5 X7Y5 X8Y5

X9Y5 X10Y5 X11Y5 X12Y5 X13Y5 X14Y5 X15Y5 X16Y5 X17Y5 X18Y5 X19Y3 X20Y4 X21Y4 X22Y4 X23Y4 X24Y4

L49

L50

L51

L52

L53

L54

L55

L56

LC4

L C 3

PM1

X0Y6 X1Y6 X2Y6 X3Y6 X4Y6 X5Y6 X6Y6 X7Y6 X8Y6

X9Y6 X10Y6 X11Y6 X12Y6 X13Y6 X14Y6 X15Y6 X16Y6 X17Y6 X18Y6 X19Y4 X20Y5 X21Y5 X22Y5 X23Y5 X24Y5

L C 4

PM0

k4 k3 k2 k1 k0

DST0

k9 k8 k7 k6 k5

RECALL

m4 m3 m2 m1 m0

AUTOEL

X19Y5 X21Y6 X20Y6 X22Y6 X23Y6 X24Y6

L C 5 X1Y2 X0Y2 X0Y3 X1Y3 X2Y3 X3Y3 X4Y3 X5Y3 X6Y3 X7Y3 X8Y3

X9Y3 X10Y3 X11Y3 X12Y3 X13Y3 X14Y3 X15Y3 X16Y3 X17Y3 X18Y3 X19Y0 X20Y2 X21Y2 X22Y2 X23Y2 X24Y2

SEG.

L31 L32 L33 L34 L35 L36 L37 L38 L39 L40 L41 L42 L43 L44 L45 L46 L47 L48 L49 L50 L51 L52 L53 L54 L55 L56

COM.

L39

L C 1 X25Y3 X26Y3 X26Y0 X25Y0 X24Y0 X23Y0 X22Y0 X21Y0 X20Y0 X18Y1 X17Y1 X16Y1 X15Y1 X14Y1 X13Y1 X12Y1 X11Y1 X10Y1

X9Y1

X8Y1

X7Y1

X6Y1

X5Y1

X4Y1

X3Y1

X2Y1

L38

L37

L36

L35

L34

L33

LC3

LC2

LC1

L C 2 X25Y4 X26Y4

SIG

a0 h0

ALM

h1 X18Y0 X17Y0 X16Y0 X15Y0 X14Y0 X13Y0 X12Y0 X11Y0 X10Y0

X9Y0 X8Y0 X7Y0 X6Y0 X5Y0 X4Y0 X3Y0 X2Y0

L C 3 X25Y5 X26Y5

b0 g0

f0 b1 g

SEC

f3 g

LAPSPL

MIN

f4 e4

DST1

f5 e5

L C 4 X25Y6 X26Y6

c0 d0 e0 c1 d1

d2 e2

b3 c3 d3

COL

b4 g

4 c4 d4 b5 g

5 c5

L C 5 X25Y2 X26Y2 X26Y1 X25Y1 X24Y1 X23Y1 X22Y1 X21Y1 X20Y1 X18Y2 X17Y2 X16Y2 X15Y2 X14Y2 X13Y2 X12Y2 X11Y2 X10Y2

X9Y2

X8Y2

X7Y2

X6Y2

X5Y2

X4Y2

X3Y2

X2Y2

L40

L41

L42

L43

L44

L45

L46

L47

L48

— 5 —

Page 7

TOT AL

BONDING

129PINS

95PINS

LSI

LCD

EEPROM

C6 C8 C4C7 C2 C3

Tr2

LL2

PZZ

BAT

EL1

BACKFRONT

C11

LL1

RMP

INV

Xtal

✽2✽2✽2

C10

Tr1

L4AC

T1T2T3

T4 ✽1✽1KI1

KI2

KI3

KI4

KI8

KI5

KI6

EMP

XTB

LD1

VDD2A

KC6

KI7

KI9

KC1

KC2

KC3

KC5

KC4

✽1✽1✽1

✽1 L1~L3, L57~L60

L56 LC1 LC5 LC6

VCCE SCL SDA WP

SDI CSB

VSS

SDA

SCL

VCC

✽1 ✽1 ✽1

✽1

PTIN

PX1

✽1

VANVC2VC1VC4VC3

BD1VDD2GNDGNDA VDD3VDD1VDSPVOSCVCHVHF

CRMS

✽1

CRST

✽1

CRIN

✽1

PY1✽1

Vref✽1

PW1✽1

PY3✽1

PX3✽1

PU1✽1

PZ1✽1

PH✽1

LE✽1

ADIN✽1

A2OUT✽1

P0✽1

SDD SCK

SCUT

No bonding

KI5 : Short (Soldering)

KI6 : Short (Soldering)

KI7 : Open (No soldering)

✽ 1.

✽ 2.

S2S3S4

CIL

ELD

VCC

OUT1

OUT2

GND

RT1

RT2

IN1

IN2

— 6 —

Page 8

3-2. CHECKING TERMINALS AND COMPONENT

5. Oscillator/Crystal

Xtal

(7110 6323)

8. Cushion/6 (7211 0064)

VDD2

ELD

GND

KI5

GND

KI6

GND

KI7

Resistor/Chip

Tr1

XTB

PCB WITH LSI

VCH

GND

GND ELD

GNDVDSP

Transistor

GND

KC1

Capacitor/Chip

C10

7. Cushion/506 (7211 9631)

GND

VCC

VDD2

SCUT

VCC

KI9

RMP

Resistor/Chip

Capacitor/

Tantalum

EMP MP

KI4

GND

KI1

KI9

C7 Capacitor/Chip

C3 Capacitor/Chip

GND VDD2

GND GND

VDD2

BD1

VDD2

KC1

CIL

GND

CIL

RT1

ELD

RT2

VDD2 GND

KC6

ELD

GND

CT 4. Capacitor/Trimmer

(1001 0950)

C2 Capacitor/

Chip

VDD2

GND

VOSC

VHF

VC2

VC1

VC3

VC4

VCH

SCK

SDO

SD0

RT1

SCK

VCC

GND

RT2

KI8

GND

KI2

GNDVDD1

GND

VDD3VDD3

GND

VOSC

GND

VC1

KI3

Capacitor/Chip

CoilLL2

Capacitor/Chip

C11

Capacitor/Chip

Tr2

Transistor

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

CoilLL1

7. Cushion/506 (7211 9631)

— 7 —

Diode

Memory/ External

Resistor/ Chip

INV

Inverter

C5 Capacitor/Chip

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

C6 Capacitor/

Chip

C1 Capacitor/Chip

Page 9

4. EXPLODED VIEW: QW-2223

12 (1002 4512)

13 (7230 0616)

10 (1001 6309)

1 (1002 4518)

2 (1001 6311)

10 (1001 6309)

6 (7236 0286) 14 (7201 9249)

11 (7233 0952)

3 (7640 3596)

PCB ass'y

15 (7230 0497)

9 (7231 1952)

Battery/Lithium

(CR2016)

— 8 —

Page 10

5. PARTS LIST: QW-2223

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".

Very Important Important Less important

Item Code No. Parts Name S

7640 3617 MODULE/WITHOUT MOVEMENT QW-2223AT-01TK G-2400-1V/2V 1 A

1 1002 4518 LCD C2223-01P QW-2223AT-01 1 A 2 1001 6311 EL YEL-2171-A-01 QW-2223AT-01 1 A 3 7640 3596 PCB ASS'Y Q254630*1TK QW-2223AT-01 1 A 4 1001 0950 CAPACITOR/TRIMMER CTZ2E-30C-W2-P QW-2223AT-01 1 B 5 7110 6323 OSCILLATOR/CRYSTAL DT-26S11 QW-2223AT-01 1 B 6 7236 0286 CONTACT/BATTERY (–) 1650 Q357954C-1 QW-2223AT-01 1 C 7 7211 9631 CUSHION/506 Q49364-1 QW-2223AT-01 2 C 8 7211 0064 CUSHION/6 Q4914-1 QW-2223AT-01 1 C

9 7231 1952 HOLDER/BATTERY 2058 Q253743-1 QW-2223AT-01 1 C 10 1001 6309 INTERCONNECTOR/2171 Q466259-1 QW-2223AT-01 2 C 11 7233 0952 SHEET/INSULATION 1028 Q434476-1 QW-2223AT-01 1 C 12 1002 4512 SPACER/ 2171 Q466258-1 QW-2223AT-01 1 C 13 7230 0616 SPRING/COIL 1199-1 Q437728B-1 QW-2223AT-01 2 B 14 7201 9249 SPRING/COIL 675-3 Q413389A-1 QW-2223AT-01 1 B 15 7230 0497 SPRING/COIL 675-3 Q413389A-2 QW-2223AT-01 2 B

BATTERY/LITHIUM CR2016 QW-2223AT-01 1

For the

rices and minimum order/supply quantities of the above parts, refer to the Parts Price List P.P.L.-562.

ecification Applicable Q R

Notes: Q – Used quantity

R – Rank

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Page 11

6. PRECAUTIONS FOR REPAIR: QW-2223 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 A 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-2223

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