background image

— 2 —

2. OPERATION CHART: QW-2223

GENERAL GUIDE

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

World Time Mode

Alarm Mode

Press 

C

.

TIMEKEEPING MODE

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

No indicator appears for any time while 24-hour time-
keeping 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 set-
ting screen.

2. Press 

C

 to move the flashing in the sequence shown below.

DST

Seconds

Month

Day

City code

Minutes

Year

Hour

12/24

3. While the seconds setting is selected (flashing), press 

D

 to reset it to 00. If you

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.

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
first, and then change the DST

 setting.

While the DST setting is selected, press 

D

 to toggle it on (

) and off (

).

The DST on/off setting you make for the city code that is currently selected in the
Timekeeping Mode (your home time city) is also applied to that city code in the
World Time Mode.

While the city codes setting is selected, use 

D

(+) and 

B

(–) to scroll through 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”.

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.

Holding down either button changes the setting at high speed.

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-
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” ad-
vances 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

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.

Hour

Minutes

Seconds

DST on indicator

Day

Month

Day of week

PM indicator

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 stop-
watch 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 op-
eration 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.

Minutes

Seconds

1/100 second

 [Up to 1 hour]

 [After 1 hour]

Split time

Lap time

Hours

Minutes

Seconds

Split time

Lap time

<Example 1>
The following operation causes one RUN, which consists of three data records, to be
stored into memory.

Start

1 set

1 set

RUN

1 set

Stop and
Clear

1st
Lap/Split

Data stored

Data stored

Data stored

2nd
Lap/Split

<Example 2>
If you do not perform a lap/split operation, the RUN is made up of a single data
record.

Start

1 set = 1 RUN

Data stored

Stop and
Clear

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.

Mode indicator

Minutes

Seconds

1/100 second

RUN number

Summary of Contents for G-2400

Page 1: ...SERVICE MANUAL PARTS LIST WITHOUT PRICE QW 2223 MODULE NO R REF NO S M 710 SEP 2000 G 2400 ...

Page 2: ...ay 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 CONTENTS Page 1 SPECIFICATIONS QW 2223 1 2 OPERATION CHART QW 2223 2 3 DRAWINGS QW 222...

Page 3: ...se Daylight Saving Time 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 wa...

Page 4: ...red 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 ERROR Message The message ERROR flashing on the display indica...

Page 5: ...CAI CAI CAI CAI CAIRO ATHENS HELSINKI ISTANBUL BEIRUT JRS JRS JRS JRS JRS JERUSALEM DAMASCUS CAPE TOWN 3 JED JED JED JED JED JEDDAH MOSCOW KUWAIT RIYADH ADEN ADDIS ABABA NAIROBI 3 5 THR THR THR THR THR TEHRAN SHIRAZ 4 DXB DXB DXB DXB DXB DUBAI ABU DHABI MUSCAT 4 5 KBL KBL KBL KBL KBL KABUL 5 KHI KHI KHI KHI KHI KARACHI MALE 5 5 DEL DEL DEL DEL DEL DELHI MUMBAI CALCUTTA 6 DAC DAC DAC DAC DAC DHAKA ...

Page 6: ...X24Y4 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 d5 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...

Page 7: ...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 A2 SCL A1 WP A0 VCC 1 1 1 PT 1 PTIN PX1 1 1 VAN VC2 VC1 VC4 VC3 BD1 VDD2 GND GNDA VDD3 VDD1 VDSP VOSC VCH VHF CRMS 1 CRST 1 CRIN 1 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 S2 S3 S4 S...

Page 8: ...C3 VDD2 CIL CIL ELD VDD2 GND GND GND EMP MP RT1 RT2 KC6 GND VDD2 ELD SD0 SCK WP VCC GND GND GND GND GND CIL GND XT Capacitor Chip C2 Capacitor Chip C5 Capacitor Chip C1 Capacitor Chip C6 Capacitor Chip C7 Capacitor Chip C3 Capacitor Chip Capacitor Tantalum C9 Capacitor Chip Capacitor Chip Capacitor Chip C11 C10 Resistor Chip Resistor Chip RT Resistor Chip R3 Transistor Tr1 RMP Transistor Tr2 Diode...

Page 9: ... EXPLODED VIEW QW 2223 1 1002 4518 12 1002 4512 2 1001 6311 Battery Lithium CR2016 3 7640 3596 PCB ass y 10 1001 6309 10 1001 6309 6 7236 0286 15 7230 0497 9 7231 1952 11 7233 0952 14 7201 9249 13 7230 0616 ...

Page 10: ...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...

Page 11: ...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 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 A...

Page 12: ...CASIO TECHNO CO LTD Overseas Service Division Nishi Shinjuku Kimuraya Bldg 1F 5 25 Nishi Shinjuku 7 Chome Shinjuku ku Tokyo 160 0023 Japan ...

Reviews: