Casio QW-2802 Service Manual
SERVICE MANUAL
& PARTS LIST
REF. NO. S/M-831
NOV. 2003
MODULE NO.
QW-2802
STR-500
R
(WITHOUT PRICE)
CONTENTS
Page
1. SPECIFICATIONS: MODULE QW-2802 .................................................... 1
2. OPERATION CHART: MODULE QW-2802 ............................................... 2
3. DRAWINGS: MODULE QW-2802
3-1. LCD DIAGRAM ............................................................................................8
3-2. CIRCUIT DIAGRAM ..................................................................................... 9
3-3. CHECKING TERMINALS AND COMPONENTS ........................................ 10
4. EXPLODED VIEW: MODULE QW-2802 ................................................... 11
5. PARTS LIST: MODULE QW-2802 ............................................................12
6. PRECAUTIONS FOR REPAIR: MODULE QW-2802
6-1. AC (ALL CLEAR) AND REMOVING OF MODULE .................................... 13
6-2. ACCURACY CHECKING ............................................................................ 13
6-3. SOLAR CELL-PCB ASS'Y CONTACT CHECKING...................................14
6-4. HOW TO CHECK TILT SENSOR................................................................ 14
1. SPECIFICATIONS: MODULE QW-2802
Item Detail
Battery CTL1616 (Storage battery)
Note: Use CTL1616 only. Other storage battery or CR1616 can cause
damage to the watch.
Battery life Approx. 11 months
Current consumption 1.07 µA maximum
Alarm system Piezo plate on Cover/Back
Accuracy ±15 sec./month
Accuracy setting system Trimmer capacitor
Accuracy checking See page 13
Functions • Electro-luminescent backlight
Full auto EL light
• Solar powered
•Sports Calorie Meter: Calculation and display of the number of calories
burned during exercise based on user input of body weight, type of activity,
and intensity. Data automatically stored in memory at the end of each day.
* Changeover between kilograms (kg) and pounds (Lb).
Measuring unit: 1 second; 0.01 kcal/0.1 kJ
Measuring capacity: 23:00'00"; 9,999.99 kcal/99,999.9 kJ
* Changeover between kilocalories (kcal) and kilojoules (kJ).
Daily and weekly calorie targets, calorie target alarms, target graph; My
Favorite Activity memory (Up to five of the last activities are remembered by
the watch for each recall.)
Daily calorie target countdown; weekly calorie target countdown; selectable
calorie memory timing (midnight or 2:00 am)
Calorie Memory: Seven days of daily data and 11 weeks of weekly data;
cumulative total data
Daily data memory record: measurement data (month, day, day of the
week), elapsed time, calories burned, target graph
Weekly data memory record: record number, elapsed time, calories burned,
target graph
Cumulative data record: Cumulative elapsed time, cumulative calories
burned
• 1/100-second stopwatch
Measuring capacity: 23:59'59.99"
Measuring modes: Elapsed time, split time, 1st-2nd place times
• 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 —
2. OPERATION CHART: MODULE QW-2802
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.
The Sports Calorie Meter functions built into this watch are not intended for taking
measurements that require professional or industrial precision. Values produced
by this watch should be considered as reasonable representations only
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
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.
, if you press any button, or if you angle
*
.
General Guide
• Press C to change from mode to mode.
• In any mode, press L to illuminate the display
Timekeeping Mode
Press C.
.
Calorie Meter Mode
▲
About This Manual
(Light)
Recall Mode
▲
• 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.
Basic Data Input Mode
▲
▲
Alarm ModeStopwatch Mode
▲
Timekeeping
PM indicator
Hour : Minutes
Day of week
Seconds Hour Minutes
Power
Saving
3. When the setting you want to change is flashing, use E and to change it as
described below
Screen
P
10:58
50
P
10:58
50
12H
6-30
2003
A
12:00
MEMO
0
N
SAVE
4. Press to exit the setting screen.
• For information about settings other than the time and date, see the following.
Display Illumination duration: Backlight
Calorie Memory Timing: Using the Sports Calorie Meter Functions
Power Saving: Power Saving Function
• 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.
Use the Timekeeping Mode to set and view the current
time and date. You can also use the Timekeeping Mode to
view date (year, month, day, day of the week) and calorie
countdown sub-screens.
Seconds
• When setting the time, you can also configure settings
for the display illumination duration, the 12/24-hour
format, calorie memory timing, and power saving on/off.
To set the time and date
1.In the Timekeeping Mode, hold down B B 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
Day
12/24-Hour
Calorie Memory
Timing
.
To
do this:
Reset the seconds to
Toggle the display illumination duration setting
between 1.5 second (
Change the hour or minutes
Toggle between 12-hour (
hour (
24H
Change the month, day, or year
Toggle calorie memory timing between
midnight (
Toggle power saving on (
00
) and 2.5 seconds ( )
) timekeeping
12:00
12H
) and 2:00 a.m. (
O
) and 24-
2:00
) and off (
N
)
OFF
)
.
format
MonthDay
A
Do this:
Press E.
Press A while the
second setting is flashing.
Use E (+) and A (–).
Press E.
Use E (+) and A (–
Press E.
Press E.
Year
).
▲
To view Timekeeping Mode sub-screens
In the Timekeeping Mode, hold down A, D, or E to display one of the sub-screens
shown below.
Month – Day
Date
Day of week
• The daily calorie countdown shows the calories remaining before the current day’s
calorie target is reached.
• The weekly calorie countdown shows the calories remaining before the current
week’s (week from Monday to Sunday when the current date occurs) calorie target is
reached.
• The daily calorie countdown is displayed in the range of 100.00 to 2,000.00 kcal or
400.0 to 8,000.0 kJ. The weekly calorie countdown is displayed in the range of
100.00 to 9,950.00 kcal or 400.0 to 40,000.0 kJ.
• For more information, see “Using the Sports Calorie Meter Functions”
Year
D
▲
▲
Weekly Calorie Countdown
A
▲
▲
E
▲
Daily Calorie
Countdo
▲
.
wn
Using the Sports Calorie Meter Functions
Target graph
Calories burned
Elapsed time
Activity name
Basic Data: See “Inputting Basic Data”.
Calorie Memory Timing
Calorie memory timing is the time of day that data measured in the Calorie Meter
*
Mode is stored in memory. You can specify a timing of midnight or 2:00 a.m. Select
2:00 a.m. if you perform a calorie meter operation after midnight. The initial factory
default setting (which is also set when the battery is replaced) is midnight.
The Sports Calorie Meter calculates the number of
calories you consume while exercising. The calculation is
based on the basic data you input, the type of activity you
are performing, and the duration of the activity. You can
also configure the watch to store calorie values in
memory, to sound an alarm to let you know when the
calorie target you specify is reached, and to display the
countdown to your calorie target.
• Calorie measurements are performed in the Calorie
Meter Mode, which you enter by pressing C.
Before Using the Calorie Meter
• Before using the calorie meter for the first time, be sure
to set your “basic data” and configure the calorie
memor
y timing.
: See “To set the time and date”.
*
— 2 —
• After you input your basic data and specify the calorie memory timing, you should
also specify the name of activity you are performing. Calories you burn are then
calculated in accordance with settings you configure. For details, see “Activities” and
“Calorie Measurements”.
• Calorie Meter Mode data is stored in memory using the current Timekeeping Mode
time and date. Do not change the time and date setting while a calorie measurement
operation is in progress.
• See “Exercising for Optimal Health” for important information about using Sports
Calorie Meter functions effectively.
Activities
For proper operation of the Calorie Meter Mode, you need to specify the name of
activity you will be performing before starting a calorie measurement operation. You
can specify any one of the following 43 activities.
AEROBICS AEROBICS AEROBICS BASEBALL
BASKETBALL
JOG JOG JOG
SWIM TENNIS WALK WALK WALK
TRAINING
**** **** **** **** **** **** ****
**** **** **** ****
• Some activities appear more than once, with the letters
These letters indicate exercise load, as Low (
• The values to the right of the line of asterisks indicate exercise intensity. The
larger the value, the greater the load.
• For more information about the load level for each activity, see “Activity Types and
Intensities”.
To specify an activity
Activity name
Calorie Measurements
You need to start and stop the calorie measurement operation when you start and
stop exercising, playing a sport, etc.
The watch displays the elapsed time, number of calories burned, and the calorie
target graph while a calorie measurement is in progress. The watch beeps for five
seconds when the number of calories burned reaches the calorie target you preset.
• Your burned calorie value is stored in memory (as daily data) when you stop the
calorie measurement operation.
• Note that the calorie measurement operation continues even if you exit the Calorie
Meter Mode. If you exit the Calorie Meter Mode with data on the display while the
measurement operation is stopped, the data will still be on the display when you
next enter the Calorie Meter Mode. This means you can accumulate data for multiple
calorie measurement operations during a single day.
• If you are engaged in an activity that has rest periods or if you perform more than
one activity and want to keep track of the cumulative elapsed time and calorie totals
in the Calorie Meter Mode, do not clear the display to all zeroes when you stop
measurement during rest periods, etc.
If you want to keep track of data for each individual session, clear the display to all
zeroes each time you stop the measurement operation.
To display the cumulative total data of multiple measurements:
To display the data for each measurement:
To perform calorie measurement
Target
graph
Current
calories
• While the measurement operation is stopped, the display alternates at two-second
intervals between the current calorie value and the activity name. In this case, only
the first four characters of the activity name are displayed, without scrolling.
• Pressing E to stop the measurement operation causes the data to be stored in
memory. Pressing B while measurement is stopped clears the display to all zeroes.
• Y w data stored in memory.
ou can use the Recall Mode to vie
Note
• The displayed current calorie value is updated every 10 seconds.
• During measurement, the target graph shows how much progress you have made
toward achieving your target calorie level for the current date. One segment of the
graph is darkened each time you burn 10% of the total target calorie amount for the
day. No segments are darkened when your current calorie value is less than 10% of
the target total.
• The target graph for the current date is also displayed in the Timek eeping Mode.
• You can view the calorie target countdown in the Timekeeping Mode. See “To view
Timekeeping Mode sub-screens” for more information.
• The watch performs either of the following operations whenever the calorie memory
timing you specified is reached.
If Calorie Measurement is in progress: The current data is stored automatically in
If Calorie Measurement is stopped: Current measurement data is stored in calorie
• A measurement operation is stopped automatically whenever the elapsed time
exceeds 23 hours.
L
, ,
,
L
, , H, , , , , m,
HLmH
, , , , ,
789 10 11 12 13
14 15 16 17 18 19
BIKE BIKE FOOTBALL GOLF
m
,
**** **** **** **** ****
, , , , , , ,
, , , , ,
m
m
L
, , , , ,
LL
RUN RUN SWIM SWIM
23456
1
, , , , , ,
1.In the Calorie Meter Mode, make sure no calorie
measurement oper ation is being performed.
• If a measurement operation is in progress, press E
to stop it.
2.Use D to select the activity you want.
Each press of
• D cycles through the preset activities.
y the name of the activity y
Displa ou want to select.
• If the full name of an activity cannot fit on the display, it
scrolls once from right to left. After scrolling the first four
characters of the activity name remain on the display.
• The watch remembers the activities you select. For
details, see “Using Favorite Activity Memory”
H
, ,
H
BIKE
mH
RUN
WEIGHT
****
****
L, m
L
), Medium (m), or High (H).
****
, and H next to them.
****
.
Start ➔ Stop; Start ➔ Stop; Start ➔ Stop.....Clear (all-zero reset)
Start ➔ Stop ➔ Clear; Start ➔ Stop ➔ Clear; .......
Elapsed time
(hours, minutes,
seconds)
AERO
Activity name
1.In the Calorie Meter Mode, use D to select the name
of the activity you are about to perform.
• Note that you cannot change the selected activity
once the calorie measurement operation starts. To
change the activity, you first need to press E to stop
the measurement operation.
• Pressing A instead of D will scroll through the
contents of Favorite Activity memory (if it contains any
activities). For more information, see “Using Favorite
Activity Memory”.
2.Press E to start the calorie measurement operation,
and then start your activity.
• To view the currently selected activity in place of the
current calorie value, hold down A.
L
3.After you are finished with your activity, press E to stop
the measurement oper
ation.
memory, and measurement is restarted from zero.
memory and the Calorie Meter Mode display is reset to all zeroes.
• Any time the calorie total exceeds 9,999.99 kcal (or 99,999.9 kJ), calorie
measurement restarts from zero.
• If you make an operational mistake while performing a calorie measurement
(selecting the wrong activity, forgetting to stop measurement during a break, etc.),
you can delete the data by stopping the measurement operation and deleting the
daily record for the current date. Next, re-start measurement for the current date
from zero. See “Recall Mode” for information about deleting the current date’s data.
Using Favorite Activity Memory
The watch remembers up to five of the last activities you selected when you
performed past calorie measurement operations. You can use Favorite Activity
memory to select your most often used activities quickly and easily.
• To display Favorite Activity memory contents, press A in the Calorie Meter Mode
while measurement is stopped.
• An activity is not added to Favorite Activity memory if it is already there.
• If Favorite Activity memory is already full, performing a measurement operation with
a new activity causes the oldest Favorite Activity to be replaced with the new one.
• You can use the following procedure to clear Favorite Activity memory contents.
To clear Favorite Activity memory contents
1. In the Calorie Meter Mode, make sure no calorie measurement operation is being
performed.
2. Press A and D at the same time.
• This causes
(
AERO
L) as the activity type.
CLR
to appear on the display, and selects low-load aerobics
Recall Mode
Target graph
REC
Day of
week
Time
Daily record data also includes calories burned and elapsed times for up to seven
activities that were selected during the current date and the previous date.
Data for the current date’s daily record is stored whenever you stop a measurement
operation in the Calorie Meter Mode. The current date’s daily record expires (becomes
yesterday’s record) at time you have specified as the calorie memory timing.
• If a daily record is stored while there are already seven daily records in memory, the
oldest record is deleted automatically to make room for the new record.
Weekly records
Weekly records contain the following information for up to 11 previous weeks of
Calorie Meter Mode measurements.
Target graph, calories burned, elapsed time (hours, minutes, seconds)
Data for a weekly record is stored on Monday morning at the time you have specified
as the calorie memory timing.
• If a weekly record is stored while there are already 11 weekly records in memory,
the oldest record is deleted automatically to make room for the new record.
Cumulative record
The cumulative record keeps a running total of calories burned and elapsed time
(hours and minutes) since the cumulative record was last cleared.
Data is saved to the cumulative record each day at the time you have specified as the
calorie memory timing.
Note
• Data save operations are based on the current time and date as kept in the
Timekeeping Mode.
• See “To set the time and date” for information about specifying the calorie memory
timing.
To recall Calorie Meter Mode records
In the Recall Mode, use the A, D, and E buttons to navigate among records a
shown below.
Month – Day
Calories burned
Daily Record
Today ’s Daily Record
▲
Press A.
•
• The daily record screen initially alternates between the date, and cumulative number
• While today’s or yesterday’s daily record is on the display, you can press D to
• The weekly record screen alternates between the cumulative total calories for the
• Note that – – is displayed for any record that has not been used yet.
Press E.
▲
From one day
previous to
six days
vious
pre
Today’s daily record appears first when you enter the Recall Mode.
of calories burned and elapsed time for that date.
display calories burned and elapsed time for each activity.
week and the week number (from = previous week to = 11 weeks
previous).
Use the Recall Mode to recall and delete data stored by
Calorie Meter Mode operation.
• All of the operations in this section are performed in the
Recall Mode, which you enter by pressing C.
About Memory Management
The watch maintains three types of Calorie Meter Mode
records: Daily, Weekly, and Cumulative. The timing when
data is stored to memory depends on the record type, as
explained below.
Daily records
Daily records contain the following information for today,
and for each of the six days prior to today.
Target graph, month, day, day of the week, calories
burned, and elapsed time (hours, minutes
▲
Press D.
AERO
Newest Activity
▲
L
▲
Previous Week’s
Weekly Record
▲
#01W
▲
▲
From two weeks
previous to 11
weeks pre
▲
#01W #11W
vious
, seconds).
Oldest
Activity
Cumulative Record
▲
▲
TTL
▲
— 3 —
Deleting Calorie Meter Mode Records
You can use the procedure below to delete today’s daily record only, or to delete all
records.
• You cannot delete records while a Calorie Meter Mode measurement operation is in
progress.
To delete today’s daily record
1. In the Recall Mode, use E and A to display the today’s daily record.
• Display the initial screen (alternating between the date, and the cumulative time
and calories burned). You cannot delete the today’s daily record if one of the
activity record screens is displayed.
2. Hold down B until the watch beeps and stops flashing on the display.
To delete all records
1. In the Recall Mode, use E and A to display the cumulative record.
2. Hold down B until the watch beeps and stops flashing on the display.
CLR
CLR
Inputting Basic Data
Note that before you can use the Calorie Meter Mode to
perform calorie measurements, you need to input your
basic data.
• All of the operations in this section are performed in the
Basic Data Input Mode, which you enter by pressing C.
Basic Data
The term “basic data” refers to information about your
current weight and your calorie target setting.
• Be sure to update basic data values whenever the
Daily Calorie Target
Weight
You can specify either kilograms (kg) or pounds (lb) as the weight unit. The range and
increment for each unit are shown below.
Kilograms: 30 to 150kg in 1kg units
Pounds: 66 to 330 lb in 2lb units
• If your weight is less than the minimum setting range value shown above, use the
minimum setting. If your weight is greater than the maximum value, use the
maximum setting.
Calorie Display Unit
You can select either kilocalories (kcal) or kilojoules (kJ) as the calorie display unit.
Calorie Targets
You can specify a calorie target value for each day and each week. After you set a
calorie target, the watch beeps for five seconds whenever your total calories burned
reaches the target value. The target graph on the display shows your progress to the
calorie target. You can set a calorie target in the ranges described below.
Daily Calorie Target
kcal: 100 to 2,000kcal, in 20kcal units
kJ: 400 to 8,000kJ, in 100kJ units
Weekly Calorie Target
kcal: 100 to 9,950 kcal, in 50kcal units
kJ: 400 to 40,000kJ, in 200kJ units
Basic Data Setting Precautions
• Note that you cannot change basic data settings when the following conditions exist.
Weight: While a Calorie Meter Mode measurement is in progress
Weight unit: Any time there is Calorie Meter Mode data in memory and when the
Calorie Meter Mode screen is not cleared to all zeroes
Calorie unit: Any time there is Calorie Meter Mode data in memory and when the
Calorie Meter Mode screen is not cleared to all zeroes
Calorie target: Following a measurement in the Calorie Meter Mode
• Changing the weekly calorie target during a week resets the weekly calorie
countdown and the target graph. Normal weekly calorie measurement will resume
starting from the next Monday following the day you changed the weekly calorie
target.
• Whenever you change the weight unit or the calorie unit, the weight setting or the
daily and weekly calorie targets change to the values shown below.
Weight: 50kg or 110lb
Daily calorie target: 200kcal or 800kJ
Weekly calorie target: 1,000kcal or 4,000kJ
• Note that the Basic Data Input Mode has four screens. When inputting basic data,
first display the screen for the setting you want to change. For details, see “To view
current basic data settings” below .
To view current basic data settings
In the Basic Data Input Mode, use D and E to display the screen for the basic data
setting you want to view (see illustration below).
• When you press D to change from the calorie target screens to the weight or
calorie unit screen, appears at the bottom of the display for about one
DATA
second. does not appear when you press E to toggle between the weight
and calorie unit screens.
Daily Calorie Target Weight
▲
Press E.
▲
Weekly Calorie Target
person using the watch changes.
DATA
Press D.
▲
▲
Press E.
Calorie Unit
lb
the unit is pounds.
▲
▲
kJ
the unit is kilojoules.
is shown when
is shown when
To specify the calorie unit
1. In the Basic Data Input Mode, use D and E to display the calorie unit screen.
2. Hold down B until the calorie unit setting (
indicates the setting screen.
• If the calorie unit setting does not flash when you hold down , perform the
following two operations and then perform this entire procedure again from the
beginning.
Change to the Calorie Meter Mode and clear the measurement to all zeroes.
Change to the Recall Mode and delete all records.
3. Press E to toggle the calorie unit between kilocalories ( ) and kilojoules
(
kJ
).
4. B to exit the setting screen.
Press
To specify your weight
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Weight unit
• Changing the weight unit automatically resets the weight to its initial default
setting. Because of this, you should always specify the weight unit you want to
use before inputting a weight value.
4. Specify the weight unit and your weight.
• While the weight unit setting is selected, press E to toggle it between kilograms
(
kg
) and pounds (
• eight setting is selected, use E (+) and A (–) to change it.
While the w
5. Press B to exit the setting screen.
To set the daily and weekly calorie targets
Target calorie
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1.In the Basic Data Input Mode, use D and E to display
Weight
the weight screen.
2.Hold down B until the weight setting starts to flash,
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which indicates the setting screen.
• If the weight setting does not start to flash when you
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hold down B , change to the Calorie Meter Mode and
stop the ongoing calorie measurement operation.
3.Press C to move the flashing between the weight and
weight unit settings.
• If the weight unit setting does not flash when you
press C, perform the following three operations and
then perform this entire procedure again from the
beginning.
Press B to exit the setting screen.
Change to the Calorie Meter Mode and clear the
measurement to all zeroes.
Change to the Recall Mode and delete all records.
lb
).
1.While in the Basic Data Input Mode, use D and E to
display either the daily calorie target or the weekly
calorie target screen.
2.Hold down B until the calorie target setting starts to
flash, which indicates the setting screen.
• If the calorie target setting does not flash when you
hold down B , perform the following operations and
then perform this entire procedure again from the
beginning.
Change to the Calorie Meter Mode and clear the
measurement to all zeroes.
Change to the Recall Mode and delete the today’s
daily record.
3.Use E (+) and A (–) to change it.
4.Press to exit the setting screen.
kcal
or
kJ
) starts to flash, which
B
kcal
B
Alarms
Alarm time
(Hour : Minutes)
AM indicator
ALM
Day of week
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
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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 (
screen. is shown for the alarm time when the Hourly
Time Signal screen is on the display.
• When you enter the Alarm 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 C.
Alarm
number
1.In the Alarm Mode, use E and A to scroll through the
alarm screens until the one whose time you want to set
is displayed.
:00
1
through 5) indicates an alarm
Press E. Press A.
-1 -3
-2
:00 -5
2.After you select an alarm, hold down B until the hour
setting of the alarm time starts to flash, which indicates
the setting screen.
• This operation automatically turns on the alarm.
3.Press C to move the flashing between the hour,
minute, and day of the week settings.
-4
— 4 —
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