Manuel d'utilisation / d'entretien du produit SF-7990 du fabricant Casio
Aller à la page of 100
SF-4990 SF-6990 SF-7990 E User ’ s Guide.
GUIDELINES LAID DOWN BY FCC RULES FOR USE OF THIS UNIT IN THE U.S.A. (not applicable to other areas). NOTICE This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
1 E LOCK REPLACE REPLACE Before using the unit for the first time Use the following procedure to load batteries and reset the unit before using it for the first time. 1. Slide the battery compartment cover in the direction indicated by the arrow. 2. Slide the battery switch to the “REPLACE 1 ” setting.
Before using the unit for the first time E 2 6. Replace the battery compartment cover. 7. Press ON/OFF to switch power on. THE RESET OPERATION DELETES ALL DATA IN MEMORY! DO YOU WANT TO CONTINUE? ENTER/ESC • If message does not appear, open the battery compartment and press the RESET button.
About the EL backlight 3 E About the EL backlight • This unit is equipped with an EL backlight that allows easy viewing of display contents in a theater, or anywhere else where lighting is dim. • Note, however, that frequent or extended use of the EL backlight, or using it under cold conditions shortens battery life.
Introduction SF-4990/SF-6990/SF-7990 E 4 SF-4990/SF-6990/SF-7990 Congratulations on your selection of CASIO ’ s new SF-4990/SF-6990/SF-7990 (referred to as SF Unit in this manual).
5 E Multiple Language Capability Your SF unit is capable of producing messages in any one of six different languages (English, French, Spanish, German, Italian, Portuguese). Use the following procedure to select the language you want. To select the system language 1.
Introduction SF-4990/SF-6990/SF-7990 E 6 About this manual... This manual is divided into 7 parts. PART 1 Getting Started Be sure to read this part of the manual before doing anything else! It includes important information that you need to know in order to use the SF Unit correctly.
7 E PART 5 Calculator Functions The SF Unit also gives you the capability to perform all of the mathematical operations available on today ’ s calculators. Conversion modes describe functions for converting between three national currencies, or between metric and yard denomination.
Introduction SF-4990/SF-6990/SF-7990 E 8 Contents Before using the unit for the first time ........................................ 1 About the EL backlight ............................................................................... 3 Introduction – SF-4990/SF-6990/SF-7990 .
9 E Contents To input accented characters .................................................................. 28 To input other symbols ............................................................................ 28 To correct, delete or insert characters .
Introduction SF-4990/SF-6990/SF-7990 E 10 To edit labels ........................................................................................... 46 To specify a date .................................................................................
11 E Contents PART 4 – Timekeeping Functions ............................................. 63 Using the Home Time function ................................................................. 63 About Home Time displays... .............................
Introduction SF-4990/SF-6990/SF-7990 E 12 PART 6 – Data Communications ............................................... 79 Setting Up for Data Communications ...................................................... 79 To connect the SF-4990/SF-6990/SF-7990 to another SF Unit .
13 E PART 1 Getting Started Read this first! You must be familiar with the following information in order to use the SF Unit correctly. It tells you what to do in order to avoid losing important data stored in memory.
PART 1 Getting Started E 14 If this is the first time you ever turned on the SF Unit … Perform the RESET procedure under “ Before using the unit for the first time ” on page 1, starting from step 9. If this is not the first time you are using the SF Unit.
15 E General Precautions • Never try to take the SF Unit apart. • Avoid strong impact and sudden temperature changes. • At very low temperatures, the display response time may slow down or the display may fail completely. This is temporary and correct operation should return at normal temperature.
PART 1 Getting Started E 16 Low Battery Message A message appears on the display to warn you when the batteries power drops below a certain level. Should battery power drop too low, data in memory may be corrupted or lost.
17 E • Never leave dead batteries in the battery compartment. • Remove the batteries if you do not plan to use the SF Unit for a long period. • Replace batteries at least once every year, no matter how much you use the SF Unit during that period.
PART 1 Getting Started E 18 To replace the batteries 1. Press ON/OFF to switch power off. 2. Slide the battery compartment cover in the direction indicated by the arrow. 3. Slide the battery switch to the “ REPLACE 1 ” setting. Insert a thin, pointed object into (A) and remove the old battery.
19 E Resetting the SF Unit ’ s Memory Warning! The following procedure erases all data stored in the memory of the SF Unit. Perform the following operation only when you want to delete all data and initialize the settings of the SF Unit.
PART 1 Getting Started E 20 3. Press ENTER . THE NEXT STEP STARTS DATA DELETION AND UNIT RESET! OK TO CONTINUE? ENTER/ESC Warning! The next step deletes all data stored in the SF Unit ’ s memory. Make sure that you really want to delete the data before you continue! 4.
21 E PART 2 Operation Reference General Guide The following illustration shows the names of the main controls of the SF-4990/ SF-6990/SF-7990. Display Mode Keys Keyboard Cursor Keys Lock Connector Ter.
PART 2 Operation Reference E 22 Setting Up the SF Unit After batteries are loaded, use the following procedures to set up the SF Unit for operation. To switch power on and off 1. Press ON/OFF to switch power on. • The initial screen for the mode that was selected when you last switched power off appears on the display.
23 E Setting Up the SF Unit To adjust the display contrast 1. Enter the Telephone Directory Mode. • You could enter any mode except the Calculator Mode and Conversion Mode here. 2. Press FUNCTION once or twice to display the function menu. 3. Press the applicable number key to select CONTRAST .
PART 2 Operation Reference E 24 Memo Mode for storage of unformatted data in a kind of electronic notebook. To Do Mode for storage of reminders of things to do. You can affix a check mark to items as you complete them. Home Time/World Time 1, 2 Modes for display of the current time in your hometown and other locations around the globe.
25 E To use the FUNCTION key Press the FUNCTION key to display a function menu that makes it possible to perform functions that are not marked on the unit’s keys.
PART 2 Operation Reference E 26 About alarm types This unit has two types of alarms: the Daily Alarm and Schedule Alarm. The following describes each of these alarms. Daily Alarm The Daily Alarm sounds at the same time everyday, when the Home Time reaches the time you have set as the Daily Alarm (page 66).
27 E Inputting Letters, Numbers and Symbols The following describes the basic input operations for the SF Unit. Note that you can use the following operations to input data only in the Telephone Directory, the Memo Mode, the Schedule Keeper, the To Do Mode, the Expense Mode, and the Anniversary Mode.
PART 2 Operation Reference E 28 To input accented characters Press the CODE key and confirm that the “ CODE ” indicator is on the display. Next, input the character. The following character accents are available. • Umlaut ( Ä , Ë , Ï , Ö , Ü , ä , ë , ï , ö , ü ) .
29 E To correct, delete or insert characters To correct a character, simply move the cursor to the location of the character and input the character you want to change to. To delete a character, move the cursor to the character you want to delete and press DEL .
PART 3 Data Management Functions E 30 PART 3 Data Management Functions This part of the manual describes how to input and store data in the Telephone Directory, Memo, Schedule Keeper, To Do, Expense and Anniversary Modes. It also describes how the Calendar Mode can be used in combination with the Schedule Keeper Mode.
31 E Data Display JACKSON ERIC H:123-4567 W:987-5432 F:777-7777 C:888-8888 eric@***.com You can scroll through a data display line-by-line using the K and L cursor keys.
PART 3 Data Management Functions E 32 Using the Telephone Directory The innovative Telephone Directory Mode of the SF Unit lets you input 1 NAME/ COMPANY 2 HOME 3 WORK 4 FAX 5 CELL 6 E-MAIL 7 URL 8 ADDRESS 9 FREE for instant look up when you need them.
33 E 1. Enter the Telephone Directory Mode. TELEPHONE1 NAME/COMPANY? 2. Input the name with the last name first (or company name), since the data is sorted according to the name entry. 3. Press ENTER . You can press the L key in place of the ENTER key.
PART 3 Data Management Functions E 34 6. Input data for the WORK, FAX, CELL, E-MAIL, URL, and ADDRESS entries. 7. After inputting all of the data in step 6, press ENTER to advance to the FREE entry. 8. Input any other information you want. 9. After inputting all of the data you want, press ENTER to store it in memory.
35 E Using the Memo Mode The Memo Mode of the SF Unit is like a pad of electronic memo paper that lets you store information in any format you want. You can input Memo Mode data by adding new memos to the end of data already in memory, or you can insert new memo data between two existing Memo Mode data items.
PART 3 Data Management Functions E 36 To insert a new Memo Mode data item between two items in memory 1. Enter the Memo Mode. 2. Recall the data item you want to come after the new data item you are about to input, and move the name of the data item into the top line of the display.
37 E Using the Calendar The calendar is pre-programmed to display full-month calendars of any month from January 1901 through December 2099. To display the calendar Press CALN/SCHD to enter the Calendar Mode.
PART 3 Data Management Functions E 38 To scroll through calendars 1. Press CALN/SCHD to enter the Calendar Mode. 2. Use the K and L cursor keys to scroll sequentially through the calendars. Holding down either key scrolls at high speed. • Use “ and ‘ to scroll through the calendars one month at a time.
39 E To highlight days of the week for multiple months 1. Press CALN/SCHD to enter the Calendar Mode. 2. Press FUNCTION once or twice to display the function menu. 3. Press the applicable number key to select HOLIDAY SET . • To clear the function menu without highlighting anything, press ESC .
PART 3 Data Management Functions E 40 Using the Schedule Keeper The Schedule Keeper lets you store data about your appointments to keep you on time all the time. It lets you input the time and a description of your appointment. You can even set Schedule Alarms that remind you when it is time to get ready for your appointments.
41 E About Schedule Keeper data and initial displays... Schedule Keeper information is stored under dates, with each date acting as a unit called a data item.
PART 3 Data Management Functions E 42 Using Schedule Alarms You can set schedule alarms for Schedule Keeper data entries to help you keep on time for important appointments.
43 E To set or change a schedule alarm for an existing data entry 1. Enter the Schedule Keeper and recall the data for which you want to set or change a schedule alarm. Press EDIT . 2. Press L until the cursor moves to the Schedule Alarm time. 3. Input the schedule alarm time.
PART 3 Data Management Functions E 44 Using the Expense Mode The Expense Mode lets you store expense data, including payment date, payment amount, payment method, expense type and description. You can also produce total for other period of time. About Expense Mode data items and data entries.
45 E About Expense Mode Display formats As with the other modes, Expense Mode data can be displayed using an Index Display or a Data Display. The following describes the contents of each type of display. Index Display The Index Display shows data day-by-day.
PART 3 Data Management Functions E 46 To enter the Expense Mode You can use either of the two following methods to enter the Expense Mode. • Press EXP/ANNI . The Expense Mode screen for the current date (as noted on the Home Time display) appears*. • Display the calendar, move the cursor to the date you want, and then press EXP/ANNI .
47 E 4. Use K and L to select the item whose label you want to change. 5. While the label you want to change is selected, input the text for the label to which you want to change. • Labels can be up to 14 characters long. 6. After you make all of the changes you want, press ENTER to store them in memory.
PART 3 Data Management Functions E 48 4. The list of payment type labels takes up two screens. Use K and L to switch between screens. While a screen is displayed, use number keys 1 through 4 to select the payment type label you want. 4/OCT/2003 SAT AMOUNT 200.
49 E 2. Press FUNCTION to display the function menu, and then select REPORT . REPORT FROM 2003/10/01 TO 2003/10/01 PAYMENT TYPE 3. Use J and H to move the cursor, input a starting date (FROM) and ending date (TO), and then press ENTER . REPORT FROM 2003/10/01 TO 2003/10/05 PAYMENT TYPE 1 CASH 2 CARD 4.
PART 3 Data Management Functions E 50 About the total amount display The amount for each type subtotal and the grand total can be an amount with an integer up to 10 digits long. This means that the maximum value is 9,999,999,999. Any value greater than this is displayed as “ ************* ” .
51 E Using the To Do Mode The To Do Mode gives you a handy list of things to do. You can input To Do data by adding new items to end of those already in memory. Each To Do Mode item can contain up to 384 characters (including newline symbols). To input To Do Mode data 1.
PART 3 Data Management Functions E 52 4. Press ENTER . TELEPHONE CALL 1/OCT/2003 WED TELEPHONE CALL 1/OCT/2003 WED 5. When the data display is on the screen, press ENTER again. • This input a check mark into the check box. • To remove the check mark from a check box, display the data display and then press ENTER .
53 E Using the Anniversary Mode You can use the Anniversary Mode to store data about anniversaries, and other events that occur on a yearly basis. Each anniversary item can contain up to 384 characters (including new line symbols).
PART 3 Data Management Functions E 54 To enter the Anniversary Mode Press EXP/ANNI twice. This displays the Anniversary Mode initial screen. To input Anniversary Mode data 1. Press EXP/ANNI twice to enter the Anniversary Mode. 2. In response to the “ DESCRIPTION? ” prompt, input a description of the appointment.
55 E Recalling data stored in memory The following search capability lets you recall data stored in memory quickly and easily. • With index search, you scroll through an index display of data items. • With initial character search, you specify the data item you are looking for by inputting the first few letters of an entry.
PART 3 Data Management Functions E 56 3. Press ‘ or “ to start the search. An index display of all data items in the mode whose initial characters match those that you specified appears on the display. • To clear the “ SEARCH ” indicator from the display (and cancel the current search operation), press ESC .
57 E Editing, Deleting and Copying data To edit a data item 1. Enter the mode you want to edit a data item. 2. Use index search , initial character search , or mode search to find the data item you want to edit.
PART 3 Data Management Functions E 58 1. Enter the mode where you want to delete all data items. 2. Press FUNCTION once or twice to display the function menu. 3. Press the applicable number key to select ALL DELETE . • To clear the function menu without deleting anything, press ESC .
59 E To move an Expense Mode data item to a different date You can move Expense Mode data from one date to another by changing the date on the EDIT screen. See “ To edit a data item ” on page 57 for more information. To copy a data item The Copy Function lets you duplicate selected data.
PART 3 Data Management Functions E 60 • To cancel the memory management operation, press ESC . Using the Secret function The Secret Function ensures that your personal data is kept private, but providing you with the means to restrict access to those who know your secret password.
61 E 5. While in the secret memory area, you can change modes, input data, edit data, recall data, and delete data using the procedures explained under each mode in this manual. 6. To exit the secret memory area (and return to the open memory area), press SECRET .
PART 3 Data Management Functions E 62 To transfer data from the open memory area to the secret memory area 1. While not in the secret memory area, enter the Telephone Directory, Memo Mode, Schedule Keeper, To Do Mode, Expense Mode, or Anniversary Mode.
63 E PART 4 Timekeeping Functions Using the Home Time function The Home Time function shows you the current time and date in the time zone you preset as your Home Time zone. You also can set a daily alarm that sounds at the same time each day. About Home Time displays.
PART 4 Timekeeping Functions E 64 To display the Home Time Press CLOCK to display the current Home Time. To set the Home Time zone 1. Press CLOCK to display the current Home Time. HOME NEW YORK AM 12:‰‰ 00 WED 1/OCT/2003 2. Press FUNCTION to display the function menu.
65 E To set the Home Time 1. Display the current Home Time. 2. Press EDIT . • The current hour setting on the display flashes because it is selected . 3. Use the H and J cursor keys to move the flashing selection around the Home Time display. When any number is selected (flashing), you can change it by entering a new value.
PART 4 Timekeeping Functions E 66 To switch the Home Time between standard and daylight saving time 1. Display the current Home Time. 2. Press DST to toggle DST on and off.
67 E About the daily alarm... Once you set the daily alarm, it sounds at the same time every day (as long as the ALARM TIME setting is ON ). To select the date format 1. Display the current Home Time. 2. Press FUNCTION to display the function menu. 3.
PART 4 Timekeeping Functions E 68 Using the World Time function With the World Time function, you can view the current time in any one of 33 cities around the world. You can register two cities as World Time cities. The times and dates that appear in the World Time displays are based on the current Home Time setting.
69 E Using the World Time function – 11 – 10 HONOLULU – 09 ANCHORAGE – 08 LOS ANGELES Seattle, Las V egas SAN FRANCISCO – 07 DENVER El Paso – 06 MEXICO CITY Dallas, Houston, Chicago – 05 NEW YORK W ashington D.
PART 5 Calculator Functions E 70 PART 5 Calculator Functions Using the Calculator Whenever you enter the Calculator Mode, some of the keys on the SF Unit keyboard take on calculator functions. To enter the Calculator Mode Press CAL to enter the Calculator Mode.
71 E • AC — clears the calculator completely (except the calculator memory). • Use C to clear a value if you have not yet entered the operator following that value. • Use the number keys ( 0 through 9 ) to enter values. Press • to input a decimal point.
PART 5 Calculator Functions E 72 To perform calculations a 0. 53 + 123 − 63 = 53 q 123 w 63 u 113. 963 × (23 − 56) = 23 w 56 e 963 u − 31779. (56 × 3 − 89) ÷ 5.2 + 63 = 56 e 3 w 89 r 5.2 q 63 u 78.19230769 123456 × 741852 = 123456 e 741852 u E 9.
73 E To perform constant calculations } 1. Enter the Calculator Mode. 3 qq 2 2. Enter the calculation, pressing the arithmetic operator key twice. This will causes the “ K ” indicator to appear on the display to indicate a constant calculation.
PART 5 Calculator Functions E 74 The following conditions all result in errors. • When the number of digits in the mantissa of an intermediate or a final result exceeds 10 digits. • When the number of digits in the mantissa of a value stored in memory exceeds 10 digits.
75 E Using the Currency Conversion Mode The Currency Conversion Mode lets you perform currency conversions. You can also define cross rates to perform conversions between different currency pairs. To enter the Currency Conversion Mode 1. Press CONVERSION to enter the Conversion Mode.
PART 5 Calculator Functions E 76 To view the current Currency Conversion Mode rates In the Currency Conversion Mode, select the currency whose rate you want to check, and then press EDIT then L to display the rate. To perform a currency conversion Example How many euros ( )are $50 (dollars)? 1.
77 E Example 2 To specify an exchange rate of 1 (euro) = DM1.948261 (DEM) 9. Press ESC to go back to the Current Conversion Mode initial display. • This displays the rates you set in Example 1. 10. Press 4 to select C1 H – J C3 . • If there is already a rate assigned to C1, it appears at this time.
PART 5 Calculator Functions E 78 Using the Metric Conversion Mode Use this mode to convert between meters and yards, kilograms and pounds, Fahrenheit and Celsius, etc. To enter the Metric Conversion Mode 1. Press CONVERSION to enter the Conversion Mode.
79 E PART 6 Data Communications Data communications capabilities let you transfer data between two CASIO SF Units, or between this unit and a personal computer. You can perform such operations in the Telephone Directory, Memo, Schedule Keeper, Calendar, To Do, Expense or Anniversary modes.
PART 6 Data Communications E 80 Important! • Be sure to close the connector covers of the SF Units when you are not performing data communications. Performing data communications between an SF Unit and a personal computer See the manual that comes with FA-127 Version1.
81 E To set the SF Unit hardware parameters 1. Press FUNCTION once or twice to display the function menu. 2. Press the applicable number key to select DATA COMM . 3. Press 3 to select SET UP PAR . SET UP PAR. PARITY E O N BIT LENGTH 7 8 BPS 4800 9600 • The highlighted items on the display are the parameters that are currently set.
PART 6 Data Communications E 82 To set up the SF Unit to receive data 1. While an initial screen is displayed, press FUNCTION once or twice to display the function menu. • If you want the received data to be stored in the secret memory area, you should also enter the secret memory area at this point.
83 E • The number of data items received is counted on the display. • If an error occurs during the receive operation, the message “ TRANSMIT ERROR! ” appears on the display. Press ESC to clear the error message. • Received data is added to the data already stored in memory.
PART 6 Data Communications E 84 Sending Data This section tells you how to operate the SF Unit to send data to another SF Unit, or to a personal computer. There are a number of possible procedures you can use, depending on the mode and how many data items you want to send.
85 E To send all data items 1. While an initial screen is displayed, press FUNCTION once or twice to display the function menu. • Note that this operation sends all open memory area data or all secret memory area data. Make sure you are in the memory area you want (open or secret) before proceeding.
PART 6 Data Communications E 86 To send one month of Calendar data (highlights) 1. In the Calendar Mode, press FUNCTION once or twice to display the function menu. 2. Press the applicable number key to select DATA COMM . 3. Press 1 to select SEND . 4.
87 E Sending Data To send all Schedule Keeper, Calendar or Expense Mode data in a specific period 1. In the Schedule Keeper, Calendar or Expense Mode, press FUNCTION once or twice to display the function menu. • You can perform the following operation while in the open memory area or the secret memory area.
PART 7 Technical Reference E 88 PART 7 Technical Reference Keys Power On/Off key Light key Telephone Directory key Calendar/Schedule Mode key Expense and Anniversary Mode key Memo Mode key To Do Mode key Calculator Mode key Clock key Secret key Conversion Mode key Escape key Key Cap Name Function Press this key to switch power on/ off.
89 E Key Cap Name Function CODE SHIFT SYMBOL EDIT Press this key to shift-lock the keyboard between upper-case and lower-case characters. Press this key to temporarily shift the keyboard for one character. Use this key to input accented characters. Press this key to display function menus.
PART 7 Technical Reference E 90 Key Cap Name Function For information on the AC , C , MC , MR , M– , M+ , % , +/– , + , – , # , $ , and = keys, see “About the Calculator Mode keys...” on page 70. Press this key to move the cursor to the right.
91 E Storage Capacity The 256K (SF-4990)/512K (SF-6990)/1M (SF-7990) bytes memory capacity includes a 258,696 (SF-4990)/520,840 (SF-6990)/1,045,128 (SF-7990) bytes user area. The following shows examples of what this means for the storage of data in each mode.
PART 7 Technical Reference E 92 To Do Approximately 7,600 (SF-4990)/15,300 (SF-6990)/30,700 (SF-7990), 20-char- acter items. Expense Approximately 7,300 (SF-4990)/14,800 (SF-6990)/29,800 (SF-7990), under the following conditions: 4 items per day, 30 days per month up to $999.
93 E Auto Sort Sequence Telephone Directory data items are automatically sorted in alphabetical order according to the first letter in the NAME entry. The following table shows the sequence used for data sorts.
PART 7 Technical Reference E 94 Message Table Message Meaning Action NOT FOUND! MEMORY FULL! ALARM TIME ALREADY USED OR PASSED! SECRET DATA! PASSWORD MISMATCH! TRANSMIT ERROR! DATA ERROR! CHECK YOUR USER ’ S GUIDE FOR PROCEDURE! Change specification or cancel search.
95 E Message Meaning Action WEAK BATTERIES! CONSULT YOUR USER ’ S GUIDE IMMEDIATELY! Message Table The batteries are getting weak. Replace batteries immediately (page 16).
PART 7 Technical Reference E 96 Specifications Model: SF-4990/SF-6990/SF-7990 Main Modes: Telephone Directory 1, 2, Memo, Schedule Keeper, To Do, Expense, Anniver- sary, Calendar, Home Time, World Time, Calculator, Currency Conversion and Metric Conversion.
97 E Battery life: Approximately 1 year under the following test conditions: Unit turned on one hour each day (5 minutes operation, 55 minutes no operation), with two backlight operations, one Daily Alarm operation per day and Hourly Time Signal turned on.
CASIO COMPUTER CO., L TD. 6-2, Hon-machi 1-chome Shibuya-ku, Tokyo 151-8543, Japan MO0 306 - D.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Casio SF-7990 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Casio SF-7990 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Casio SF-7990, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Casio SF-7990 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Casio SF-7990, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Casio SF-7990.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Casio SF-7990. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Casio SF-7990 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
