CASIO QW1811 (SM580)
Service Manual

Alarm Types

The types of alarm you get depends on the information you set. � To set a Daily alarm Set the hour and minutes for the alarm time. Set x for the month and xx for the day (see step 4 under �Setting Alarms�). This type of setting causes the alarm to sound every day at the time you set. � To set a Date alarm Set the month, day, hour and minutes for the alarm time. This type of setting causes the alarm to sound at the specific time, on the specific date you set. � To set a 1-Month alarm Set the month, hour and minutes for the alarm time. Set xx for the day (see step 4 under �Setting Alarms�). This type of setting causes the alarm to sound every day at the time you set, only during the month you set. � To set a Monthly alarm Set the day, hour and minutes for the alarm time. Set x for the month (see step 4 under �Setting Alarms�). This type of setting causes the alarm to sound every month at the time you set, on the date you set.

(a) Elapsed time measurement
J J

J

J

H

Start Stop Re-start (b) Split time measurement
J H H

Stop
J

Clear
H

Start
J

Split
H
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Split release
J

Stop
H

Clear
H

(c) Split time and 1st-2nd place times Start
First runner finishes.

Split

Second runner finishes. Record time of Record time of first runner. second runner.

Stop

Split release

Clear

AUTO DISPLAY FUNCTION
The Auto Display function of this watch
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Setting Alarms
1. Press K or L while in the Alarm Mode to select Alarm 1 through Alarm 5.
Press L Alarm 1 Hourly Time Signal Alarm 2 Press K Alarm 3 Alarm 4 Alarm 5

A

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L

continually changes the contents of the digital display. Note that you cannot use any of the watch�s other functions while the Auto Display function is operating.

P

M

B

Turning the Auto Display On
Hold down M for about three seconds in any mode until the watch beeps.

2. After you select an alarm, hold down A until the hour digits start to flash on the display. The hour digits flash because they are selected. � At this time, the alarm is automatically turned on. 3. Press H or J to change the selection in the following sequence.
Press J Hour Press H Minutes Month Day

Turning the Auto Display Off
Hold down M for about three seconds until the watch beeps. Note The Auto Display function cannot be performed while you are making settings (i.e. while digits or other settings are flashing on the display).

4. Press K to increase the selected digits and L to decrease them. Holding down either button changes the selection at high speed. � To set an alarm that does not include a month (daily alarm, monthly alarm), set x for the month. Press K or L until the x mark appears (between 12 and 1) while the month digits are flashing. � To set an alarm that does not include day (daily alarm, 1-month alarm), set xx for the day. Press K or L until the xx mark appears (between 31 and 1) while the day digits are flashing. � The format (12-hour and 24-hour) of the alarm time matches the format you select for normal timekeeping. � When setting the alarm time using the 12-hour format, take care to set the time correctly as morning (no indicator) or afternoon (P). 5. After you set the alarm, press A to return to the Alarm Mode.

ABOUT THE BATTERY
Should battery power drop below a certain level, display characters will appear dim, the backlight may fail to light, and the alarm may fail to sound. Also, the message BATT will appear and further operation will be impossible when you try to input or recall data in the Telememo Mode. Should any or all of this happen, have the battery replaced as soon as possible. Using the watch while the battery is low can result in abnormal operation. ALWAYS LEAVE BATTERY REPLACEMENT UP TO THE DEALER WHERE YOU BOUGHT THE WATCH OR TO AN AUTHORIZED CASIO DISTRIBUTOR. BE SURE TO SHOW THE FOLLOWING INFORMATION TO THE PERSON REPLACING THE BATTERY.
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Switching an Alarm and Hourly Time Signal on and off
1. In the Alarm Mode, press K or L to select an alarm or the Hourly Time Signal. 2. When the alarm or Hourly Time Signal you want to is selected, press B to turn it on and off. Indicates alarm is ON. Indicates Hourly Time Signal is ON. � The alarm on indicator ( ) and the Hourly Time Signal on indicator ( ) are shown on the display in all modes while these functions are turned on.

Attention dealer or CASIO distributor
Be sure to use the following procedure when replacing the battery. 1. Open and remove the back cover. � If {CLOSE appears on the display when you open the back cover, replace the back cover. Wait for a few minutes and try again. 2. Remove the battery holder. 3. Remove the old battery and load a new one. 4. Replace the battery holder. 5. Touch the AC contact and the battery (+) side with metallic tweezers. � The AC (all clear) operation DOES NOT delete data stored in memory. 6. Close the back cover. � The message {WAIT appears on the display about 20 seconds after you perform the AC (all clear) operation in step 5 of the above procedure, indicating that the watch is performing an internal self-check for data errors. � The {WAIT indicator remains on the display up to 6 minutes while the watch performs an internal check of data in memory. Though you can change the time setting of the watch while the {WAIT indicator is on the display, other operations are disabled.
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Testing the alarm
Hold down B while in the Alarm Mode to sound the alarm.

STOPWATCH MODE
Home zone 1/100 second The Stopwatch Mode lets you measure elapsed time Mode indicator time, split times, and two finishes. The range of the stopwatch is 23 hours, 59 minutes, 59.99 seconds.
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A
P

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FAX

CALL

E-MAIL

L

M

B

Seconds Hours
H

Minutes

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�5�