Casio STR-600 Troubleshooting guide

SERVICE MANUAL
& PARTS LIST
(WITHOUT PRICE)
QW-2634
MODULE NO.
R
REF. NO. S/M-843
FEB. 2004
STR-600

CONTENTS
Page
1. SPECIFICATIONS: MODULE QW-2634 .................................................... 1
2. OPERATION CHART: MODULE QW-2634 ............................................... 2
3. DRAWINGS: MODULE QW-2634
3-1. LCD DIAGRAMS .......................................................................................... 7
3-2. CIRCUIT DIAGRAM ..................................................................................... 8
3-3. CHECKING TERMINALS AND COMPONENTS ......................................... 9
4. EXPLODED VIEW: MODULE QW-2634 ................................................... 10
5. PARTS LIST: MODULE QW-2634 ............................................................ 11
6. PRECAUTIONS FOR REPAIR: MODULE QW-2634
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE .................................... 12
6-2. ACCURACY CHECKING ............................................................................ 12
6-3. SOLAR CELL-PCB ASS'Y CONTACT CHECKING...................................13
6-4. HOW TO CHECK TILT SENSOR................................................................13

— 1 —
Battery CTL1616 (Storage battery)
Note: Use CTL1616 only. Other storage battery or CR1616 can cause
damage to the watch.
Battery life Approx. 10 months
Current consumption 1.19 µA maximum
Alarm system Piezo plate on Cover/Back
Accuracy ±15 sec./month
Accuracy setting system Trimmer capacitor
Accuracy checking See page 12
Functions: • Electro-luminescent backlight
Full auto EL light
• Solar powered
• Dual time
• Stopwatch: Time and distance measurements
Measuring unit: 1/100 second
Measuring capacity: Lap time (9:59'59.99") ; Split time (99:59'59.99")
Measuring modes: Elapsed time, lap/split times
Memory capacity: Up to 51 records (used by lap/split time records and log
title screens)
Others: lap/split number, Auto start (Automatically starts a Stopwatch Mode
elapsed time operation at a preset time); target split times (Watch beeps
when target time is reached and displays Target Split Differential); Leg
indicators
• Alarms
5 independent alarms (each can be set with daily alarm or weekly alarm)
• Hourly time signal
• Battery power indicator
• Power Saving: Turns off the display when the watch is left in the dark
• Auto-calendar: to year 2049
• 12/24-hour format
• Regular timekeeping: Hour, minutes, seconds, am/pm, month, date, day
1. SPECIFICATIONS: MODULE QW-2634
Item Detail

— 2 —
2. OPERATION CHART: MODULE QW-2634
Getting Acquainted
Congratulations upon your selection of this CASIO watch. To get the most out of your
purchase, be sure to carefully read this manual and keep it on hand for later reference
when necessary.
Expose the watch to bright light to charge its battery before using it.
You can use this watch even as its battery is being charged by exposure to bright
light.
Be sure to read “Battery” of this manual for important information you
need to know when exposing the watch to bright light.
If the digital display of the watch is blank...
If the SLEEP indicator is on the display (either flashing or
steady), it means that the display is blank because the
watch’s Power Saving function has turned off the display
to conserve power.
Power Saving automatically turns off the display and
enters a sleep state whenever the watch is left for a
certain period where it is dark.
The initial factory default setting is Power Saving on.
The watch recovers from the sleep state if you move it to
a well-lit area
*
, if you press any button, or if you angle
the watch towards your face for reading.
*
It can take up to two seconds for the display to turn
on.
See “Power Saving Function”for more information.
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)
Timekeeping Mode
▲
▲
▲
▲
Press .
▲
Stopwatch Mode
Target Mode
Alarm Mode
Recall Mode
General Guide
Press to change from mode to mode.
In any mode (except for the Recall Mode), press to illuminate the display.
PM indicator
Day of week Month –Day
Seconds
Hour : Minutes
Timekeeping
Use the Timekeeping Mode to set and view the current time and date. The
Timekeeping Mode also has a Dual Time screen that lets you view the current time in
Kona, Hawaii, which is the site of the Ironman Triathlon.
In the Timekeeping Mode, press to toggle between the Date and the Dual Time
screens.
Press .
Date
Kona time
zone indicator
Dual time
(Hour : Minutes)
Dual Time
▲
▲
Setting the Time and Date
When setting the time, you can also configure settings for the display illumination
duration, the 12/24-hour format, power saving on/off, and the Dual Time screen.
About the Dual Time screen
The Dual Time screen is initially set up to show the time in Kona, Hawaii, which is the
site of the Ironman Triathlon. You can leave this setting the way it is or change it to
show the current time in another time zone.
If you need to adjust the current Kona time setting, use the “Time Differential Table”
for reference. If you live in Tokyo for example, you would need to subtract 19 hours
from the current Tokyo time to determine the current time in Kona, Hawaii. Note that
the times in the “Time Differential Table”are standard times. You need to subtract
one hour from these times during periods when summer time (Daylight Saving Time)
applies.
You can also use the Dual Time screen to keep track of the current time in another
area outside of the Kona, Hawaii time zone. If you do, you should turn off
(Kona time zone indicator) on the Dual Time screen. This will cause the indicator to
be replaced by an indicator that shows the day of the week for the current date.
To set the time and date
1.In the Timekeeping Mode, hold down until the
seconds start to flash, which indicates the setting
screen.
2.Press to move the flashing in the sequence shown
below to select other settings.
3. When the setting you want to change is flashing, use and to change it as
described below.
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Seconds Hour Minutes
Month
KOA/Day of
the week Power
Saving
12/24-Hour
Format Year
Hour DayMinutes
Dual time settings
To do this:
Reset the seconds to
Toggle the display illumination duration setting
between 1.5 seconds ( ) and 2.5 seconds ( )
Change the hour or minutes
Toggle between 12-hour (
) and 24-hour
( ) timekeeping
Change the year, month, or day
Toggle power saving on ( ) and off ( )
Switch between the (Kona) indicator
and (day of the week)
Change the dual time hour or minutes
Screen Do this:
Press .
SAVE
Press while the
seconds count is flashing.
Use (+) and (–).
Press .
Use (+) and (–).
Press .
Press .
Use (+) and (–).
4. Press to exit the setting screen.
Stopwatch
The 1/100-second stopwatch measures elapsed time, as
well as lap/split times. The Stopwatch Mode also includes
a number of features and functions for the triathlete,
including lap/split time memory, auto-start, target splits,
leg (event) indicators, and more.
All of the operations in this section are performed in the
Stopwatch Mode, which you enter by pressing .
See “Timing a Triathlon”for information about triathlon
functions.
Measuring Elapsed Time
Use the following procedure to perform a basic elapsed
time operation with the stopwatch.
The stopwatch continues to run until you stop it. If the
elapsed time measurement reaches the maximum limit,
it will restart from zero.
Timekeeping
Mode time
1/100 second
Seconds
Hours
Minutes
Remaining
memory
To measure elapsed time
1.In the Stopwatch Mode, press to start the elapsed
time measurement.
Starting an elapsed time operation displays the
elapsed time in the center of the display and in the
lower part of the display.
Note that pressing will not start an elapsed time
operation while an auto-start countdown is being
performed. In this case, you need to stop the auto-
start countdown before starting the elapsed time
operation.
Elapsed time measurement continues even if you exit
the Stopwatch Mode.
2.To stop elapsed time measurement, hold down for
about two seconds until the watch emits two short
beeps and then one long beep.
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
l
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
D
D
C
C
B
A
D
B
E
E
E
C
E
E
E
C
EC
C
A
C
D
CE
L
STW
KOA
STW
12H
KOA
KOA
24H
ALM
F:50
F:50
00
3:58
50
10:58
50
P
DUAL
KOA
DUAL
12H
6-30
6-30
6-30
2004
ON
ON OFF
___

—3 —
Pressing while an elapsed time operation is in progress or stopped cycles the
lower Stopwatch Mode display between the three screens shown below.
Split Time Timekeeping Target Split Differential
Mode Time
3. To clear the displayed stopwatch times to all zeroes, stop elapsed time
measurement and then hold down for two seconds until
stops flashing on
the display and the watch beeps.
Keep depressed until the watch beeps. If you release after
starts to
flash but the watch does not beep yet, the Stopwatch Mode measured times will
reappear.
Recording Lap and Split Times
“Lap time”is the time spent to cover a specific segment of a race, such as one lap
around a track.
“Split time”is the time spent from the beginning of a race up to a certain point.
The explanations in this section describe general lap and split time registration,
without using the target split feature for triathlon timing. They assume that all target
splits are turned off. See “Timing a Triathlon”for more information about target splits.
Lap/split times are stored in memory automatically whenever you perform a lap/split
time operation with the Cbutton. See “Recall Mode”for more information.
To record lap/split times
1.In the Stopwatch Mode, press to start an elapsed
time measurement.
2.Press to freeze the current lap time in the center of
the display and the current split time in the lower
display. The lap and split times are automatically stored
in memory at this time.
Pressing causes the watch to beep twice. The lap
time and split time will remain frozen on the display for
about eight seconds. After that, the display will
automatically change back to the elapsed time
display, which will show the time of the next lap in the
center and the total elapsed time (split time) at the
bottom.
Stopwatch timing continues internally while the lap/
split times are frozen on the display.
3.You can repeat step 2 as many times as you want.
Split time
Lap time
Lap/Split number
4. To stop the elapsed time measurement, hold down for about two seconds, until
the watch emits two short beeps, followed by one long beep.
After stopping elapsed time measurement, you can resume it by pressing .
5. To clear the displayed stopwatch times to all zeroes, stop elapsed time
measurement and then hold down for two seconds until
stops flashing on
the display and the watch beeps.
Keep depressed until the watch beeps. If you release after
starts to
flash but the watch does not beep yet, the Stopwatch Mode measured times will
reappear.
The lap/split number of the current lap/split flashes on the display while an elapsed
time measurement is in progress. Lap/split numbers are automatically incremented
starting from
01 whenever you press in step 2 of the above procedure. The
maximum lap/split number is
99 . Recording a lap/split after that causes the lap/split
number count to restart from
00 .
Auto start time
Auto-start
Auto-start automatically starts a stopwatch elapsed time operation when a time set by
you is reached.
Auto-start is coordinated with the current Timekeeping Mode time. The stopwatch
elapsed time operation will start automatically when the auto-start time you specify
is reached in the Timekeeping Mode.
Note that you can configure an auto-start time or turn auto-start on or off only while
the Stopwatch Mode screen shows all zeroes.
To set the auto-start time
1.While the Stopwatch Mode screen shows all zeroes,
hold down until the hour setting of the auto-start
time starts to flash, which indicates the setting screen.
2.Press to move the flashing between the hour and
minute settings.
3.While a setting is flashing, use (+) and (–) to
change it.
4.Press to exit the setting screen.
Timekeeping
Mode time
To turn auto-start on and off
While the Stopwatch Mode screen shows all zeroes, hold
down for about one second to toggle auto-start on
(countdown displayed) and off (all zeroes displayed).
When auto-start is turned on, the Stopwatch Mode
screen counts down the time remaining until the auto-
start time is reached. When the countdown reaches
zero, the watch beeps three times and a stopwatch
elapsed time operation starts automatically, regardless
of the mode the watch is currently in.
The auto-start countdown continues, even if you exit the
Stopwatch Mode.
Note that a stopwatch elapsed time operation cannot be
started manually by pressing while an auto-start
countdown is in progress. You need to turn off auto-start
before using the stopwatch.
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Timekeeping Mode time
Time remaining untill
auto-start (hours,
minutes, seconds)
Countdown Screen
Configuring the Watch for Triathlon Timing
You can use the Target Mode to configure the watch with target splits, and to display
leg indicators during timing of each leg.
Configuring the watch for timing a triathlon consists of the following three steps.
1 Setting target split times
2 Specifying leg indicators
3 Turning on the target splits you want to use
Target Splits and Leg Indicators
You can configure the watch up to five target lap/split times (
through ) and
specify leg indicators (Swim, Bike, Run) that appear on the display on the Stopwatch
Mode screen during timing of each leg.
The following shows examples of two possible configurations that you can use.
Example 1: Swim: 20 minutes; Bike: 3 hours; Run: 2 hours
Leg Lap/Split Number Target Split
Swim 20 minutes
Bike 3 hours 20 minutes
Run 5 hours 20 minutes
None Off
None
Off
Example 2: Swim: 20 minutes; Transition: 5 minutes;Bike: 3 hours;Transition:
5 minutes; Run: 2 hours
Leg Split Number Target Split
Swim 20 minutes
Transition 25 minutes
Bike 3 hours 25 minutes
Transition 3 hours 30 minutes
Run
5 hours 30 minutes
To configure target split times
1.In the Target Mode, use and to scroll through the
target split screens (
through ) until the one
whose time you want to set is displayed.
Press . Press .
2.After you select a target split, hold down until the
hour setting of the target split time starts to flash. This is
the setting screen.
If the hour setting does not flash when you hold down , it probably means that
a Stopwatch Mode elapsed time or auto-start countdown operation is being
performed. Go to the Stopwatch Mode and stop the operation.
3. Press to move the flashing between the hour, minute, and seconds settings.
4. While a setting is flashing, use (+) and (–) to change it.
You can specify a target split time of up to 99 hours, 59 minutes 50 seconds in
10-second steps.
5. Press to exit the setting screen.
To specify a leg indicator for a split
1.In the Target Mode, use and to scroll through the
target split screens (
through ) until the one
whose leg indicator you want to specify is displayed.
2.Press to cycle through the leg indicator settings in
the sequence shown below to select the one you want.
Leg indicator
(Bike)
SWIM
BIKE
RUN
(Run)
SWIM
BIKE
RUN
(None)
SWIM
BIKE
RUN
(Swim)
SWIM
BIKE
RUN
To turn a target split on and off
1. In the Target Mode, use and to scroll through the target split screens (
through ) until the one you want to turn on or off is displayed.
2. Press to toggle the currently displayed target split on (target split time displayed)
and off (
: displayed).
Timing During a Triathlon
Basically, timing a triathlon is the same as elapsed time measurement and lap/split
time recording in the Stopwatch Mode. The only difference is that you have the watch
configured with target splits and leg indicators before starting actual timing.
Timing a Triathlon
You can configure the watch with up to five target split
times and leg indicators. Then when you time the legs of a
triathlon, the watch will display the leg indicators during
each leg, and beep when a preset target split time is
reached. You can even display the difference between a
preset target split time and your actual split.
See “Stopwatch”for full details about using the
Stopwatch Mode and for more information about lap and
split time operations.
Lap/Split
number
Leg indicator
Target split (hours,
minutes, seconds)
To time a triathlon
1.Use the procedure under “Configuring the Watch for
Triathlon Timing”to configure the watch for triathlon
timing.
2.Use to enter the Stopwatch Mode.
3.When you start the first leg of a triathlon (usually the
swim leg), press to start an elapsed time
measurement.
If you have the watch configured to display leg
indicators, the leg indicator will flash on the display.
The current lap/split number will also be displayed.
4.When you reach the end of the first leg, press so the
watch beeps twice.
This will freeze the time of the first leg (lap/split
number
) in the center of the display and in the
lower display. The times will also be stored
automatically in memory.
Leg indicator Lap/Split
number
Lap time Split time
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•
•
•
•
•
•
•
•
•
•
•
B
B
C
C
C
C
C
C
C
B
B
D
E
E
A
C
C
A
A
CC
CLR
CLR
CLR
CLR
•
•
•
•
C
CE
CE
CE
CE
EC
A
B
B
D
B
B
A
D
01
01
05
0501
05
05
04
03
02
01
05
04
03
02
01
01
0501
01 02 03
0405
x:xx xx

—4 —
5. After about eight seconds, the display will automatically change back to the elapsed
time display, with the time of the current leg (lap) in the center and the total elapsed
time (split) at the bottom.
6. Repeat step 4 for each leg of the triathlon.
If you have the watch configured with targets for the transition periods (as in
Example 2), perform step 4 when you complete the transitions between legs.
7. When you complete the last leg of the triathlon, hold down for about two
seconds, until the watch emits two short beeps, followed by one long beep.
This stops the elapsed time measurement.
8. To clear the displayed leg (lap) time and total elapsed time to all zeroes, hold down
for two seconds until stops flashing on the display and the watch beeps.
Note
If you have a target split time set and turned on, the watch will beep for three
seconds when the split time being measured in the Stopwatch Mode during that split
reaches the target split time. You can also display the difference between your target
split time and the actual time you record for that split.
• All of the digits of the Target Split Differential contain dashes ( ) if the target split time
feature is turned off or if the current split time exceeds the preset target split time.
The target split time differential is displayed using hours, minutes, seconds and
1/100 second when it is less than 10 hours. Hours and minutes only are displayed
when the differential is 10 hours or greater.
Split Time
B
Timekeeping Mode Time Target Split Differential
Pressing while an elapsed time operation is in progress or stopped cycles the
lower Stopwatch Mode display between the three screens shown below.
Target time off
Target time exceeded Less than 10 hours 10 hours or greater
• Leg indicators can be displayed for up to five splits only. All leg indicators are
displayed if you record more than five lap/split times during an elapsed time
operation.
Recall Mode
Use the Recall Mode to recall and delete records stored
by the Stopwatch Mode.
• The title screen of the newest log appears first whenever
you enter the Recall Mode.
• Log numbers are automatically assigned in sequence,
starting from 01 .
• xx is shown in place of the log number and creation
date on the Recall Mode screen if there are no
stopwatch records currently in memory.
• All of the operations in this section are performed in the
Recall Mode, which you enter by pressing D .
To recall stopwatch records
In the Recall Mode, use A (+) and L (–) to scroll through the log title screens, starting
from the newest one, as shown below. When the title screen of the log you want is
displayed, use E (+) and C (–) to cycle through the records contained in the log.
Log
number
Creation date
(Month –Day)
Log Title Screen
• Stopwatch records are stored in “logs”that are created automatically by the watch.
See “Memory Management”for more information.
Press C .
▲ ▲ ▲
▲ ▲ ▲
L
A
A
L
Lap time
Lap/Split number
Leg indicator
Split time
E
▲
▲
▲
▲
Oldest
Log Title
Next (New)
Log Title
▲
▲
Newest
Log Title
To delete a log
1. In the Recall Mode, display the Log Title screen of the log you want to delete.
2. Hold down Buntil the watch emits a beep and CLR stops flashing on the display.
• Press and hold B until CLR starts to flash on the display and then stops flashing.
If you release B before CLR stops flashing the watch will return to the Log Title
screen without deleting the log.
• Note that you cannot delete a log if the lap time currently displayed in the Stopwatch
Mode is part of that log. To delete the log, you first need to reset the Stopwatch
Mode screen to all zeroes.
• The watch has enough memory to hold up to 51 records. Since each log title screen
uses up one record of memory space, the maximum number of lap/split time records
you can store depends on how many logs there are currently in memory, as shown
below.
• If watch memory is already full when you start a Stopwatch elapsed time
measurement operation that creates a new log, the oldest log in memory and all of
its records are deleted automatically to make room for the new log.
• If you are adding records to the only log in memory and watch memory becomes
full, adding another record causes the oldest record in the log to be deleted
automatically to make room for the new record.
Memory Capacity Number of Logs Lap/Split Time Record Capacity
Currently in Memory
1 51 records –1 log title screen = 50
51 records 2 51 records –2 log title screens = 49
5 51 records –5 log title screens = 46
Alarms
You can set up to five independent alarms with hour,
minutes, and day of the week. When an alarm is turned
on, the alarm tone sounds when the alarm time is
reached.
You can also turn on an Hourly Time Signal, which will
cause the watch to beep twice every hour on the hour.
• The alarm number (1through 5) indicates an alarm
screen. :00 is shown for the alarm time when the Hourly
Time Signal screen is on the display.
• When you enter theAlarm Mode, the data you were
viewing when you last exited the mode appears first.
• All of the operations in this section are performed in the
Alarm Mode, which you enter by pressing D.
ALM
AM indicator
Alarm time
(Hour : Minutes)
Day of week Alarm
number
Timekeeping Mode time
Alarm Types
The alarm type is determined by the settings you configure, as described below.
• Daily alarm
Set the hour and minutes for the alarm time. This type of setting causes the alarm to
sound everyday at the time you set.
• Weekly alarm
Set the hour, minutes, and the day of the week for the alarm time. This type of setting
causes the alarm to sound every week at the time you set, on the day of the week you
set.
To set an alarm time
1.In the Alarm Mode, use Eand C to scroll through the
alarm screens until the one whose time you want to set
is displayed.
x1 x2 x3
:00 x5 x4
2.After you select an alarm, hold down Buntil the hour
setting of the alarm time starts to flash, which indicates
the setting screen.
• This operation automatically turns on the alarm.
3.Press Dto move the flashing between the hour,
minute, and day of the week settings.
Press E. Press C .
4. While a setting is flashing, use E (+) or (–) to change it.
• To set an alarm that does not include a day of the week (daily alarm), set
for the day of the week. Press Eor C
C
until the mark appears (between
SUN and SAT) while the day of the week setting is flashing.
• When setting the alarm time using the 12-hour format, take care to set the time
correctly as a.m. (Aindicator) or p.m. (Pindicator).
5. Press B to exit the setting screen.
Alarm Operation
The alarm sounds at the preset time for about 10 seconds.
• To stop the alarm tone after it starts to sound, press any button.
• The alarm and the Hourly Time Signal operations are performed in all modes except
for the Timekeeping Mode setting screen.
To test the alarm
While in the Alarm Mode, hold down Ato sound the alarm.
To turn an alarm and the Hourly Time Signal on and off
1.In the Alarm Mode, use Eand Cto select an alarm or
the Hourly Time Signal.
2.Press B to toggle it on and off.
• Turning on anAlarm (x1 through x5) displays the
alarm on indicator on its Alarm Mode screen.
• In all modes, the alarm on indicator is shown for any
alarm that is currently turned on.
• The Hourly Time Signal on indicator is shown on the
display in all modes while the Hourly Time Signal is
turned on.
Alarm on indicator
Hourly time signal on
indicator
Memory Management
Starting an elapsed time measurement operation in the Stopwatch Mode creates a
new log. Any lap/split times recorded during the elapsed time measurement, as well
as the final elapsed time are all stored in the records of the log. The log remains open
for data storage until you permanently close it by clearing the Stopwatch Mode screen
to all zeroes.
Backlight
The backlight uses an EL (electro-luminescent) panel that
causes the entire display to glow for easy reading in the
dark. The watch’s auto light switch automatically turns on
the backlight when you angle the watch towards your face.
• The auto light switch must be turned on (indicated by
the auto light switch on indicator) for it to operate.
• You can specify 1.5 seconds or 2.5 seconds as the
display illumination duration. See “To set the time and
date”for more information.
• See “Backlight Precautions”for other important
information about using the backlight.
To turn on the backlight manually
Press L in any mode (except for the Recall Mode) to
illuminate the display.
• The above operation turns on the backlight regardless of
the current auto light switch setting.
Auto light switch
on indicator
•
•
•
•
C
B
C
CLR
___
___

—5 —
Warning!
• Always make sure you are in a safe place whenever you are reading the
display of the watch using the auto light switch. Be especially careful when
running or engaged in any other activity that can result in accident or injury.
Also take care that sudden illumination by the auto light switch does not
surprise or distract others around you.
• When you are wearing the watch, make sure that its auto light switch is turned
off before riding on a bicycle or operating a motorcycle or any other motor
vehicle. Sudden and unintended operation of the auto light switch can create a
distraction, which can result in a traffic accident and serious personal injury.
To turn the auto light switch on and off
In the Timekeeping Mode, hold down Lfor about two seconds to toggle the auto light
switch on ( displayed) or off ( not displayed).
• The auto light switch on indicator ( ) is on the display in all modes while the
auto light switch is turned on.
Battery
This watch is equipped with a solar cell and a rechargeable battery (secondary
battery) that is charged by the electrical power produced by the solar cell. The
illustration shown nearby shows how you should position the watch for charging.
Example: Orient the watch so its face
is pointing at a light source.
• The illustration shows how to position
a watch with a resin band.
• Note that charging efficiency drops
when any part of the solar cell is
blocked by clothing, etc.
• Normally, you should try to keep the
watch outside of your sleeve as much
as possible. Charging is significantly
reduced if the face is only partially
covered.
Solar cell
Important!
• Storing the watch for long periods in an area where there is no light or wearing it in
such a way that it is blocked from exposure to light can cause rechargeable battery
power to run down. Be sure that the watch is normally exposed to bright light
wheneverpossible.
• This watch employs a solar cell that converts light into electricity, which charges a
built-in rechargeable battery. Normally, the rechargeable battery should not need
replacement, but after very long use over a number of years, the rechargeable
battery may lose its ability to achieve a full charge. If you experience problems
getting the rechargeable battery to a full charge, contact your dealer or CASIO
distributor about having the rechargeable battery replaced.
• The rechargeable battery should be replaced with a CASIO-specified CTL1616
battery only. Other rechargeable batteries can cause damage to the watch.
• All data stored in memory is deleted, and the current time and all other settings
return to their initial factory defaults whenever battery power drops to Level 4 and
when you have the battery replaced.
• Turn on the watch’s Power Saving function and keep it in an area normally exposed
to bright light when storing it for long periods. This helps to keep the rechargeable
battery from going dead.
Battery Power Indicator and RECOVER Indicator
The battery power indicator on the display shows you the current status of the
rechargeable battery’s power.
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Battery power
indicator
Function Status
All functions enabled.
All functions enabled.
Except for timekeeping and
battery power indicator, all
functions and display indicators
are disabled.
All functions disabled.
Level
1
2
3
4
Battery Power Indicator
(Charge Soon Alert)
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RECOVER
indicator
• The flashing CHARGE indicator at Level 3 tells you that battery power is very low,
and that exposure to bright light for charging is required as soon as possible.
• At Level 4, all functions are disabled and settings return to their initial factory
defaults. Functions are enabled once again after the rechargeable battery is
charged, but you need to set the time and date, after the battery reaches Level 3
from Level 4. You will not be able to set any of the other settings until the battery
reaches Level 2 after dropping to Level 4.
• Display indicators reappear as soon as the battery is charged from Level 4 to Level 3.
• Leaving the watch in direct sunlight or some other very strong light source can
cause the battery power indicator to temporarily show a reading that is higher than
the actual battery level. The correct battery power indicator should appear after a
fewminutes.
• If you use the backlight or the alarm a number of times during a short period,
RECOVER appears on the display, and the backlight and beeper tone become
disabled until battery power recovers. After some time, battery power will recover
and RECOVER will disappear, indicating that the above functions are enabled again.
• If RECOVER appears frequently, it probably means that remaining battery power is
low. Leave the watch in bright light to allow it to charge.
Charging Precautions
Certain charging conditions can cause the watch to become very hot. Avoid leaving
the watch in the areas described below whenever charging its rechargeable battery.
Also note that allowing the watch to become very hot can cause its liquid crystal
display to black out. The appearance of the LCD should become normal again when
the watch returns to a lower temperature.
Warning!
Leaving the watch in bright light to charge its rechargeable battery can cause it
to become quite hot. Take care when handling the watch to avoid burn injury.
The watch can become particularly hot when exposed to the following
conditions for long periods.
• On the dashboard of a car parked in direct sunlight
•Too close to an incandescent lamp
• Under direct sunlight
About the Auto Light Switch
Turning on the auto light switch causes the backlight to turn on, whenever you position
your wrist as described below in any mode. Note that this watch features a “Full Auto
EL Light”, so the auto light switch operates only when available light is below a certain
level. It does not turn on the backlight under bright light.
Moving the watch to a position that is parallel to the ground and then tilting it
towards you more than 40 degrees causes the backlight to turn on.
More than
40°
Parallel to
ground
Charging Guide
After a full charge, timekeeping remains enabled for up to about 10 months.
• The following table shows the amount of time the watch needs to be exposed to light
each day in order to generate enough power for normal daily operations.
Exposure Level (Brightness) Approximate
Exposure Time
Outdoor Sunlight (50,000 lux) 5 minutes
Sunlight Through a Window (10,000 lux) 24 minutes
Daylight Through a Window on a Cloudy Day (5,000 lux) 48 minutes
Indoor Fluorescent Lighting (500 lux) 8 hours
• Since these are the specs, we can include all the technical details.
•Watch is not exposed to light
•Internal timekeeping
•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
• Stable operation is promoted by frequent charging.
Recovery Times
The table below shows the amount exposure that is required to take the battery from
one level to the next.
• The above exposure time values are all for reference only.Actual required exposure
times depend on lighting conditions.
Exposure Level
(Brightness)
Outdoor Sunlight
(50,000 lux)
Sunlight Through a
Window (10,000 lux)
Daylight Through a
Window on a Cloudy
Day (5,000 lux)
Indoor Fluorescent
Lighting (500 lux)
Approximate Exposure Time
Level 4 Level 3 Level 2 Level 1
2 hours 21 hours 6 hours
6 hours 108 hours 30 hours
9 hours 219 hours 60 hours
103 hours ------------ ------------
▲ ▲ ▲
Reference
This section contains more detailed and technical information about watch operation.
It also contains important precautions and notes about the various features and
functions of this watch.
Timekeeping
• Resetting the seconds to 00 while the current count is in the range of 30 to 59
causes the minutes to be increased by 1. In the range of 00 to 29, the seconds are
reset to
00 without changing the minutes.
• With the 12-hour format, the
P (PM) indicator appears on the display for times in the
range of noon to 11:59 p.m. and the
A (AM) indicator appears 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 also
applied in all other modes.
• The year can be set in the range of 2000 to 2049. The day of the week is calculated
automatically in accordance with the date you set.
• 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 when battery power drops to Level 4.
Auto Return Features
If you leave a screen with flashing digits on the display for two or three minutes without
performing any operation, the watch automatically exits the setting screen.
Scrolling
The A, C, E , and Lbuttons are used in various modes and setting screens to
scroll through data on the display. In most cases, holding down these buttons during a
scroll operation scrolls through the data at high speed.
Power Saving Function
When turned on, the Power Saving function automatically puts the watch into a sleep
state whenever it is left for a certain period in an area where it is dark. The table below
shows how watch functions are affected by the Power Saving function.
• Wearing the watch inside the sleeve of clothing can cause it to enter the sleep state.
• The watch will not enter the sleep state while the Timekeeping Mode time is
between 6:00 AM and 9:59 PM. If the watch is already in the sleep state when the
time reaches 6:00 AM, however, it will remain in the sleep state.
• The watch will not enter the sleep state while it is in the Stopwatch Mode.
Elapsed Time
in Dark
60 to 70 minutes
6 or 7 days
Display
Blank, with
SLEEP flashing
Blank, with
SLEEP not flashing
Operation
Display is off, but all functions are enabled.
All functions are disabled, but timekeeping
is maintained.

—6 —
To recover from the sleep state
Perform any one of the following operations.
• Move the watch to a well-lit area. It can take up to two seconds for the display to turn
on.
• Press any button.
• Angle the watch towards your face for reading.
To turn Power Saving on and off
1.In the Timekeeping Mode, hold down Buntil the
seconds start to flash, which indicates the setting
screen.
2.Press Dseven times until the Power Saving on/off
screen appears.
3.Press E to toggle Power Saving on (ON) and off
(OFF).
4.Press Bto exit the setting screen.
• The Power Saving on indicator (SAVE) is on the display
in all modes while the Power Saving is turned on.
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Backlight Precautions
• The electro-luminescent panel that provides illumination loses power after very long
use.
• 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.
• The watch may emit an audible sound whenever the display is illuminated.This is
due to vibration of the EL panel used for illumination, and does not indicate
malfunction.
• Frequent use of the backlight runs down the battery.
Auto light switch precautions
• Wearing the watch on the inside of your wrist, movement of your arm, or vibration of
your arm can cause frequent activation of the auto light switch and illumination of the
display. To avoid running down the battery, turn off the auto light switch whenever
engaging in activities that might cause frequent illumination of the display.
• Note that wearing the watch under your sleeve while the auto light switch is turned
on can cause frequent illumination of the display and can run down the battery.
• The backlight may not light if the face of the watch is
more than 15 degrees above or below parallel. Make
sure that the back of your hand is parallel to the ground.
•The backlight turns off after the preset display
illumination duration (see “To set the time and date”),
even if you keep the watch pointed towards your face.
More than 15 degrees
too high
• Static electricity or magnetic force can interfere with proper operation of the auto
light switch. If the backlight does not light, try moving the watch back to the starting
position (parallel with the ground) and then tilt it back towards you again. If this does
not work, drop your arm all the way down so it hangs at your side, and then bring it
back up again.
• Under certain conditions, the backlight may not light until about one second after you
turn the face of the watch towards you. This does not necessarily indicate
malfunction of the backlight.
• You may notice a very faint clicking sound coming from the watch when it is shaken
back and forth. This sound is caused by mechanical operation of the auto light
switch, and does not indicate a problem with the watch.
Cities in Zone
Difference Between GMT
Local Time and Kona Time Differential
Time Differential Table
Pago Pago +01.0 –11.0
Honolulu, Papeete +00.0 –10.0
Anchorage, Nome –01.0 –09.0
Los Angeles, San Francisco, Las Vegas, Vancouver, –02.0 –08.0
Seattle/Tacoma, Dawson City
Denver, El Paso, Edmonton –03.0 –07.0
Chicago, Houston, Dallas/Ft. Worth, New Orleans, –04.0 –06.0
Mexico City, Winnipeg
New York, Montreal, Detroit, Miami, Boston, Panama City, –05.0 –05.0
Havana, Lima, Bogota
Caracas, La Paz, Santiago, Pt. Of Spain –06.0 –04.0
Rio De Janeiro, Sao Paulo, Buenos Aires, Brasilia, –07.0 –03.0
Montevideo –08.0 –02.0
Praia –09.0 –01.0
London, Dublin, Lisbon, Casablanca, Dakar, Abidjan –10.0 +00.0
Paris, Milan, Rome, Madrid, Amsterdam, Algiers, Hamburg, –11.0 +01.0
Frankfurt, Vienna, Stockholm, Berlin
Cairo, Jerusalem, Athens, Helsinki, Istanbul, Beirut, –12.0 +02.0
Damascus, Cape Town
Jeddah, Kuwait, Riyadh, Aden, Addis Ababa, Nairobi, –13.0 +03.0
Moscow
Tehran, Shiraz –13.5 +03.5
Dubai, Abu Dhabi, Muscat –14.0 +04.0
Kabul –14.5 +04.5
Karachi, Male –15.0 +05.0
Delhi, Mumbai, Kolkata –15.5 +05.5
Dhaka, Colombo –16.0 +06.0
Yangon –16.5 +06.5
Bangkok, Jakarta, Phnom Penh, Hanoi, Vientiane –17.0 +07.0
Hong Kong, Singapore, Kuala Lumpur, Beijing, Taipei, –18.0 +08.0
Manila, Perth, Ulaanbaatar
Tokyo, Seoul, Pyongyang –19.0 +09.0
Adelaide, Darwin –19.5 +09.5
Sydney, Melbourne, Guam, Rabaul –20.0 +10.0
Noumea, Pt. Vila –21.0 +11.0
Wellington, Christchurch, Nadi, Nauru Is. –22.0 +12.0
* Based on data as of June 2003.

— 7 —
3. DRAWINGS: MODULE QW-2634
3-1. LCD DIAGRAMS
L 6
L 7
L 8
L 9
L10
L11
L12
L13
L14
L15
L16
L17
L18
L19
L20
L21
L22
L23
L25
L26
L27
L 4
L24
L31
LC1 LC2 LC3 LC4 LC5
L 5
L30
L28
L29
SEG COM
LOW
L 3
L 2
SLEEP
L 1 LC1 LC2 LC3 LC4 LC5
SEG COM
L32
L33
L48
L47
L46
L45
L44
L36
L43
L42
L41
L40
L39
L38
L37
L35
L34
L49
L50
L51
L54
L53
L52
L55
SEG COM
X14Y2
X13Y2
X12Y2
X11Y2
X10Y2
X9Y2
X8Y2
X7Y2
X6Y2
X5Y2
X4Y2
X3Y2
X2Y2
X1Y2
X0Y2
X15Y2
X16Y2
g12
c12
g11
c11
c6
g6
f5
X14Y1
X13Y1
X12Y1
X11Y1
X10Y1
X9Y1
X8Y1
X7Y1
X6Y1
X5Y1
X4Y1
X3Y1
X2Y1
X1Y1
X0Y1
X15Y1
X16Y1
e12
d12
e11
d11
d6
e6
X14Y0
X13Y0
X12Y0
X11Y0
X10Y0
X9Y0
X8Y0
X7Y0
X6Y0
X5Y0
X4Y0
X3Y0
X2Y0
X1Y0
X0Y0
X15Y0
X16Y0
SWIM
BIKE
RUN
NO
MID
HIGH
X14Y4
X13Y4
X12Y4
X11Y4
X10Y4
X9Y4
X8Y4
X7Y4
X6Y4
X5Y4
X4Y4
X3Y4
X2Y4
X1Y4
X0Y4
X15Y4
X16Y4
a12
a11
COL1
a6
e5
X14Y3
X13Y3
X12Y3
X11Y3
X10Y3
X9Y3
X8Y3
X7Y3
X6Y3
X5Y3
X4Y3
X3Y3
X2Y3
X1Y3
X0Y3
X15Y3
X16Y3
f12
b12
f11
b11
b6
f6
g5
b5
e4
g4
e3
g3
f0
g0
g1
e1
g2
e2
f8
g8
f7
g7
b9
f9
b10
g10
a5
f4
b4
COL3
f3
b3
a0
b0
b1
f1
b2
f2
e8
c8
e7
c7
g9
e9
c10
e10
a4
MINSEC
a3
SIG
AUTOEL
ALM
a1
MIN0
a2
d8
d7
c9
d9
d10
i10
d5
LAP
SPLIT
d0
MIN1
RECOV
SAVE
HYP1
PM1
AM1
h10
c5
d4
c4
COL0
d3
c3
e0
c0
c1
d1
c2
d2
a8
b8
a7
b7
COL2
a9
a10
f10
L30 L29 L28 L25 L24 L23 L22 L21 L20 L17 L16 L15 L14 L13 L12 L11 L10 L 9 L 6 L 5 L 4 L 3 L 2 L 1 L 8 L 7
LC3 L31 L41 L32 L33 L34 L35 L36 L37 L38 L39 L42 L43 L44 L47 L50 L55 L51 LC4 LC5 L40 LC1 LC2 L52 L53 L54
a6 b6
c6
d6
e6
f6
g6
SWIM
BIKE
RUN
COL1
c11
b11
a11
g11
f11
e11
d11
a12
f12
e12
d12
c12
g12
b12
AUTOEL
HIGH
MID
LOW
SIG
ALM
MIN0
NO SLEEP
a1
b1
c1
d1
e1
f1
g1
a0
b0
c0
d0
e0
f0
g0
COL3
COL0
a2
b2
c2
d2
e2
f2
g2
a3
f3 b3
g3
e3 c3
d3
MINSEC
a5
f5 b5
g5
e5 c5
d5
a4
f4 b4
g4
e4 c4
d4
SPLITLAP SAVERECOV
h10
Y0
X0
Y4
X16
i10
PM1
AM1
HYP1
COL2
MIN1
g7
a10
b10
c10
d10
e10
f10
g10
c7
d7
b7
a7
f7
e7
g8
e8
d8
f8
a8
b8
c8
f9
e9
d9
g9
a9
b9
c9

—8 —
3-2. CIRCUIT DIAGRAM
LSI
TOTAL 106PINS
BONDING 101PINS
✽2
✽2
✽4
✽4
✽4
✽3
✽3
✽3
✽2
✽3
✽5
✽6
✽7
✽7✽3
✽3
✽8
LCD (2.8V 1/3b 1/5d)
GND VDD2 VCH VDD3 VC1 VC2VDD1BD VDSPVC3 VC4 VHFVSC
C3
C2C5 C1C4C6
C7
BAT
C8
LL1
Tr1
PZ
Di1
SC
C9
Z
Di2 R1
CLF1
E'
Cel
EL
INV
LL2
L+
VOUT
L–
GND
CLF2
V+
BACK
FRONT
GNDB
Rb
Xtal
CT
SK
S2
S1
S5
S3
SA
S4
SB
XTB
LD1
XT
T1
T2
T3
KI1
KI2
KI3
KI4
KI5
KI6
KI7
KI8
KI9
AC
T4
R1
R2
R3
N1
N2
L1 - - - - L55 LC1 - - - LC5 SDO SCK CSBSDI
SCR
SCIN
RP1RP2
Cp
KC4
KC3
KC2
KC1
VPM✽1
✽9
✽10
✽1✽1✽1✽1
✽ 1. No bonding
✽ 2. Soldering pads (for switching modules) are not used in
this module, and are all open.
✽3. Latch type key
✽ 4. Short (Soldering) (R trimming)
✽ 5. Inclination sensor
✽ 6. GNDB is used for the bias on the back of the tip.
✽ 7. Short (Soldering) (N trimming)
✽ 8. L28~L30 are used as the static drive pins.
✽ 9. KC2 is used in this module.
✽ 10. KC3 is used in this module.

—9 —
3-3. CHECKING TERMINALS AND COMPONENTS
Top view of P.C.B. Ass'y Bottom view of P.C.B. Ass'y
KI5
VDD2
L
L
L
R1
R1
R1
VDD2
BD1 GND
LGND
LD1
GNDB
VSC VSC
GND KI4
KI4
VDD2
GND
KI9
SCIN
SCIN
SCIN
GND GND
SCR
GND
KI8
GND KI1
KI1
L+
L–
CLF2
CLF1
KI7
VDD2
CLF1
CLF2
LD1 GND
L–
VOUT
L+
VDD2GND
GND
GND VCH
VCH
KI6 VC3 VC4
VC1
VC2
GND VDSP
VHF
GND
GND VDD3
VDD1GND
VC1
VDSP
KI3 GND
XT
AC
KI2 VDD2
VDD2
XT
XTB
VOUT
VSC
KI4
KI4
KI5
KI1
VOUT
KC3
KI8
KI8
KI8
GND
KI7
VSC
GND
KI6
KI3
KI2
KC2
KC4
R2
GND
GND
GND
R1
R3
N1
GND
GND N2
GND KI9
Capacitor/Chip C8
Capacitor/Chip C9
Capacitor/Chip Cp
Inverter
INV
Resistor/Chip
RP1 Capacitor/Chip
Cel
5. Oscillator/Crystal
(7110 6323)
4. Capacitor/Trimmer
(1009 7666) Transistor
Tr1
Varistor
Z
Coil
LL2
Diode
Di1
Diode
Di2
Coil
LL1 Resistor/Chip
Rb
Resistor/Chip R1
Capacitor/Chip C5
Capacitor/Chip
C7
Capacitor/Chip C3
Capacitor/Chip
C4
Capacitor/Chip C6
Capacitor/Chip
C1
Capacitor/Chip
C2
3. PCB ASS'Y
(7640 7246)
CT
Xtal
Resistor/Chip
RP2
13. Sensor/Tilt
(7105 5275)
SK

— 10 —
4. EXPLODED VIEW: MODULE QW-2634
9 (1008 3364)
6 (1006 5657)
(CTL1616)
8 (7218 0438)
19 (7230 0644)
16 (1008 2133)
11 (1008 2135)
7 (7231 1913)
1 (1013 1512)
Casing parts:
Dial ass'y with solar cell
20 (1008 4578)
12 (1006 5664)
14 (1009 9862)
10 (1008 2102)
11 (1008 2135)
15 (1008 2132)
18 (1008 2134)
3 (7640 7246)
PCB Ass'y
Casing parts: Spacer
2 (1008 9590)
17 (7230 0616)

5. PARTS LIST: MODULE QW-2634
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 ---------------------------------------
-
Less important
3. Batteries in Bulk pack on the tray will be supplied from our Overseas Spare Parts Section under charge basi
s
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
MODULE/WITHOUT MOVEMENT QW-2634AT-01 STR-600-2V
< The module QW-2634 is "built-in t
yp
e" which is assembled directl
y
to
the case, therefore the module as the s
p
are
p
arts is not available. >
1 1013 1512 LCD C2634-01P QW-2634AT-01 1A
2 1008 9590 EL YEL-2534-A-00 QW-2634AT-01 1A
3 7640 7246 PCB ASS'Y RJQ516079*001V01TK QW-2634AT-01 1A
4 1009 7666 CAPACITOR/TRIMMER CTZ2E-25C-W2-P QW-2634AT-01 1B
5 7110 6323 OSCILLATOR/CRYSTAL DT-26S11 QW-2634AT-01 1B
6 1006 5657 BATTERY/STORAGE CTL1616 QW-2634AT-01 1B
7 7231 1913 CONTACT/BATTERY
(
-
)
Q359948B-2 QW-2634AT-01 1C
8 7218 0438 CUSHION/524 Q411459-1 QW-2634AT-01 1C
9 1008 3364 HOLDER/BATTERY Q254197A-2 QW-2634AT-01 1C
10 1008 2102 HOUSING 2534-2 Q152370-1 QW-2634AT-01 1C
11 1008 2135 INTERCONNECTOR Q469546-1 QW-2634AT-01 2C
12 1006 5664 LABEL 2368 Q468543A-1 QW-2634AT-01 1C
13 7105 5275 SENSOR/TILT TS-2418-P QW-2634AT-01 1B
14 1009 9862 SHEET/INSULATION Q470524-1 QW-2634AT-01 1C
15 1008 2132 SPACER 2534-1 Q152368-1 QW-2634AT-01 1C
16 1008 2133 SPACER 2534-2 Q152369A-1 QW-2634AT-01 1C
17 7230 0616 SPRING/COIL 1199-1 Q437728B-1 QW-2634AT-01 2B
18 1008 2134 SPRING/COIL 2534-1 Q469421-1 QW-2634AT-01 2B
19 7230 0644 SPRING/COIL 785-1 Q439335-1 QW-2634AT-01 1B
20 1008 4578 SUPPORTER/PCB ASS'Y Q152367-2 QW-2634AT-01 1C
For the
p
rices and minimum order/su
pp
l
y
q
uantities of the above
p
arts, refer to the Parts Price List P.P.L.-603.
Notes: Q - Used quantity
R - Rank — 11 —

— 12 —
6. PRECAUTIONS FOR REPAIR: MODULE QW-2634
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 positive (+) side of the battery or main plate with the metallic tweezers.
The contact should be made for about two seconds.
For 2 seconds after the AC operation, do not make any button operations on these modules.
2. On removing of the module from the case, please insert the precision screw driver between the module
and the case pointed by arrows.
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 Bbutton, press Eand Dat the normal timekeeping mode.
Then all the segments are displayed and the LCD drive signals are changed to the static drive signal
of “32 kHz” so that you can check the accuracy with the quartz timer.
B) CANCELLATION OF THE “ACCURACY
CHECKING MODE”
Press any button except for Ebutton.
Then the display is reurned to its original state.
NOTE: The “ACCURACYCHECKINGMODE”will
automatically return to the regular mode
in 1 ~ 2 hour(s) without any operation.
Metallic tweezers
QW-2634
C
E
B
D
L
A

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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 Ebutton, press Aand Bbuttons 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.
3. To exit from TEST mode
Press any button.
6-4. HOW TO CHECK TILT SENSOR
1) Press E, Band Lbuttons 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 4 Figure 5
Figure 3
Figure 1 Figure 2
Press E, Aand Bbuttons
Tilt the watch towards you
more than 40°More than 40°
E
C
D
B
Place the watch in a dark
room more than two seconds.
Appear "8888" on display.
Appear "TLT" on display. Appear"8888" ondisplay.
A
L

CASIO TECHNO CO.,LTD.
Overseas Service Division
6-2, Hon-machi 1-Chome
Shibuya-ku, Tokyo 151-8543, Japan