Casio RFT-100, QW-2993 Service Manual & Parts List

SERVICE MANUAL

& PARTS LIST

REF. NO. S/M-937

FEB. 2006

MODULE NO.

QW-2993

RFT-100

Ver.1 : Mar. 2006

R

(WITHOUT PRICE)

CONTENTS

Page

1. SPECIFICATIONS: MODULE QW-2993 .................................................... 1

2. OPERATION CHART: MODULE QW-2993 ............................................... 2

3. DRAWINGS: MODULE QW-2993

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

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

4. EXPLODED VIEW: MODULE QW-2993 .................................................... 8

5. PARTS LIST: MODULE QW-2993 ............................................................. 9

6. PRECAUTIONS FOR REPAIR: MODULE QW-2993

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

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

1. SPECIFICATIONS: MODULE QW-2993

Item Detail

Battery CR2025
Battery life Approx. 5 years
Current consumption 1.57 µA maximum
Alarm system Piezo plate on Cover/Back
Accuracy ±15 sec./month
Accuracy setting system Trimmer capacitor
Accuracy checking See page 10

Functions

• Electro-luminescent backlight
Auto-light switch, afterglow

• Vibration alert
Selectable for stopwatch target alarm, timer alarm, daily alarm, hourly

time signal; beeper disabled when vibration alert is selected.

• World time
29 time zones (48 cities), city code display, daylight saving on/off

• Stopwatch: Add time timer for injury timeouts, etc.
Measuring unit: 1 second (upper and lower display)
Measuring capacities: Upper display: 59'59"; Lower display :99'59"
Measuring modes: Elapsed time, event timer

• Preset timer
Measuring unit: 1 second
Preset start timers: 10, 12, 15, 20, 25, 30, 35, 40, 45 minutes
Timer modes: Elapsed time, event time
*Measurement of elapsed time for up to 60 minutes after the countdown

reaches zero

Other: Auto-repeat

• Interval timer
Number of timers: Up to 9
Measuring unit: 1 second
Input range: 59'55. (1-minute increments and 5-second increments)
Other: Auto-repeat

• Daily alarm

• Hourly time signal

• Auto-calendar (to year 2099)

• 12/24-hour format

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

— 1 —

2. OPERATION CHART: MODULE QW-2993

About This Manual

• Button operations are indicated using the letters shown
in the illustration.

• Each section of this manual provides you with the
information you need to perform operations in each
mode. Further details and technical information can be
found in the “Reference” section.

(Light)

General Guide

• Press C to change from mode to mode.

• In any mode, press L to illuminate the display.

Timekeeping Mode Stopwatch Mode Preset Timer Mode Alarm ModeWorld Time ModeInterval Timer Mode

Press .

Timekeeping

Month

–

Day of week

PM indicator

Day

Hour : Minutes

To set the time and date

Seconds City Code

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

Screen

To do this:

50

Reset the seconds to

OFF

Toggle between Daylight Saving Time (
and Standard Time (

Change the city code

P

10:58

Change the hour or minutes
Change the year

6-30

Change the month or day

• See “Daylight Saving Time (DST)” for details about the DST setting.

4. Press A to exit the setting screen.

Daylight Saving Time (DST)

Daylight Saving Time (summer time) advances the time setting by one hour from
Standard Time. Remember that not all countries or even local areas use Daylight
Saving Time.

To toggle the Timekeeping Mode time between DST and Standard Time

DST indicator

Use the Timekeeping Mode to set and view the current
time and date.

Seconds

Read This Before You Set the Time and Date !

The times displayed in the Timekeeping Mode and World
Time Mode are linked. Because of this, make sure you
select a city code for your Home City (the city where you
normally use the watch) before you set the time and date.

• For full information on city codes, see the “City Code
Table”.

1.In the Timekeeping Mode, hold down A until the

seconds start to flash, which indicates the setting
screen.

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

below to select other settings.

DST

Month

00

OFF

)

1.In the Timekeeping Mode, hold down A until the

seconds start to flash, which indicates the setting
screen.

2.Press C to display the DST setting screen.

3.Press D to toggle between Daylight Saving Time

ON

(

displayed) and Standard Time (

4.Press A to exit the setting screen.

• The DST indicator is on the display while Daylight
Saving Time is turned on.

Year MinutesDay

Do this:

Press D.

ON

)

Press D.

Use D (east) and B (west).
Use D (+) and B (–).

OFF

Hour

displayed).

To toggle between 12-hour and 24-hour timekeeping

In the Timekeeping Mode, press D to toggle between 12-hour timekeeping and
24-hour timekeeping.

• With the 12-hour format, the P (PM) indicator appears for times in the range of noon
to 11:59 p.m. and no indicator appears to the left of the hour digits for times in the
range of midnight to 11:59 a.m.

• With the 24-hour format, times are displayed in the range of 0:00 to 23:59, without
any indicator.

• The 12-hour/24-hour timekeeping format you select in the Timekeeping Mode is
applied in all other modes.

• The P indicator is not displayed with the Timekeeping Mode time on the Preset
Timer Mode, Interval Timer Mode, World Time Mode, and Alarm Mode screens.

Stopwatch

Initial Stopwatch Mode

Screen

Timekeeping Mode time

Minutes Seconds

•

Press B to pause and

restart elapsed time
measurement.

To measure times with the stopwatch

Elapsed Time

Start

*1 Elapsed time measurement in the lower display continues.

Using the Watch for Official Timing of a Sport Event

After you set a game or event time, the watch will perform an alert operation (beeper
or vibration) when the time in the lower display reaches that time.
If the event is interrupted for some reason, you can press B to pause and restart
timing in the upper display. The lower display shows the total elapsed time since the
start of the timing operation. You can calculate the total amount of time that play was
interrupted (lost time or injury time) by subtracting the upper display time from the
lower display time.

Stop*

The stopwatch lets you measure elapsed time. The upper
display and lower display can be used for official timing of
an event or game.

• You can configure the watch for beeper alert or vibration
alert. For details about vibration alert, see “Vibration
Alert”.

• The measurement range of the upper display is
59 minutes 59 seconds.

• The measurement range of the lower display is
99 minutes 59 seconds.

• The stopwatch continues to run, restarting from zero
after it reaches its limit, until you stop it.

• The stopwatch measurement operation continues even
if you exit the Stopwatch Mode.

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

Elapsed Time Screen

1

Re-start

•

This time measurement (1/100

second) cannot be paused.

Minutes Seconds

•

This time measurement cannot be

paused.
It shows the total elapsed time
since the timing operation started.

Hold down

1

Stop*

Clear

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