DellメーカーH7228の使用説明書/サービス説明書
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www .dell.com | support.dell.com Dell™ Dimension™ 4600C front door power button hard-drive light CD or DVD drive light USB 2.0 connectors (2) headphone connector breakaway hinge IEEE 1394 connector* breakaway hinge PC Card connectors (2)** * On computers with integrated IEEE 1394 connectors.
Notes, Notices, and Cautions NOTE: A NOTE indicates important i nformation that helps you make better use of your computer . NOTICE: A NOTICE indicates either potential da mage to hardware or loss of da ta and tells you how to avoid the problem. CAUTION: A CAUTION indicates a potential for propert y damage, personal injury , or death.
Contents 3 Contents Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Finding Information for Y our Computer . . . . . . . . . . . . . . . . . . . 9 1 Setting Up and Using Y our Computer Connecting the AC Ad apter (Japan only) .
4 Contents Battery Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Drive Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 CD drive problems . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Problems writing to a CD-RW drive .
Contents 5 Video and Monitor Problems . . . . . . . . . . . . . . . . . . . . . . . . 40 If the screen is blank . . . . . . . . . . . . . . . . . . . . . . . . . 40 If the screen is difficult to read . . . . . . . . . . . . . . . . . . . . . 41 3 Advanced T roubleshooting Diagnostic Lights .
6 Contents Adding or Replac ing a Video Card . . . . . . . . . . . . . . . . . . . . . 66 Removing a Video Card . . . . . . . . . . . . . . . . . . . . . . . . 67 Installing a Video Card . . . . . . . . . . . . . . . . . . . . . . . . . 68 Adding Memory .
Safety Instructions 7 Safety Instructions See your P roduct Information Guide for safety instructions..
8 Safety Instructions www .dell.com | support.dell.com.
Finding Information for Y our Computer 9 Finding Information for Y our Computer What are you lookin g for? Find It Here • How to set up my computer Setup Diagram • Tips on using W i ndows • How to clean my computer • How to use my mouse and keyboar d T ell Me How Help File 1 Click the Start button and click Help and Support .
10 Finding Information for Y our Computer www .dell.com | support.dell.com • Latest drivers for my computer • Answers to technical service and support questions • Online discussions with other users and technical support • Documentation for my computer Dell Support Website — support.
Setting Up and Using Y our Computer 11 Setting Up and Using Y our Computer Connecting the AC Adapter (Japan only) CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide . 1 Connect the AC adapter to the plug on the A C power cable.
12 Setting Up and Using Y our Computer www .dell.com | support.dell.com Attaching and Removing the Computer Stand CAUTION: Before you begin any of the pr ocedures in this section, foll ow the safety inst ructions in the Product Information Guide . NOTE: Place your computer on a soft surface to prevent scratching the top cover .
Setting Up and Using Y our Computer 13 4 Tighten the scr ew . 5 Place the computer in the upright position. T o r emove the stand: 1 T urn the computer over so th at the stand is at the top. 2 Loosen the screw and lift the stand away . 3 Place the computer in a horizontal po sition until you reattach the stand.
14 Setting Up and Using Y our Computer www .dell.com | support.dell.com Printer Cable Y o ur printer connects to your computer with either a USB cable or a parallel cable. Y our printer may not come with a printer cable, so if you purchase a cable separately , ensure that it is compatible with your printer .
Setting Up and Using Y our Computer 15 Connecting a USB Printer NOTE: Y ou can connect USB devices wh ile the computer is turned on. 1 Complete the operating system setup if you have not already done so . 2 Install the printer driver if necessary . See th e documentation that came with your printer .
16 Setting Up and Using Y our Computer www .dell.com | support.dell.com Connecting an IEEE 1394 Device (Optional) IEEE 1394 devices can move large amounts of data between computers and peripheral devices and are ideal for use with multimedia device s, such as digital video cameras.
Setting Up and Using Y our Computer 17 Network Setup Wizard The Microsoft ® W indows ® XP operating system provides a Ne twork Setup W izard to guide you through the process of sharing files, printers, or an Internet connection between computers in a home or small office.
18 Setting Up and Using Y our Computer www .dell.com | support.dell.com Connecting to the Internet NOTE: ISPs and ISP offerings vary by country . T o connect to the Internet, you need a modem or network connection and an Internet service provider (ISP), such as AOL or MSN.
Setting Up and Using Y our Computer 19 6 Click the appropriate option under How do you want to connect to the Internet? , and then click Next . 7 Use the setup information provided by your ISP to complete the setup. If you are having problems connecting to the Internet, see "E-Mail, Modem, and Internet P roblems" on page 27.
20 Setting Up and Using Y our Computer www .dell.com | support.dell.com Using Blank CD-Rs and CD-RWs Y our CD-RW drive can write to two differ ent types of recording media—CD-Rs and CD-R Ws. Use blank CD-Rs to recor d music or permanently store data files.
Setting Up and Using Y our Computer 21 T o determine if your computer is using Hyper - Threading technology : 1 Click the Start button, right-click My Computer , and then click P roperties . 2 Click Hardware and click Device Manager . 3 In the Device Manager window , click the plus (+) sign n ext to the processor type.
22 Setting Up and Using Y our Computer www .dell.com | support.dell.com.
Solving Problems 23 Solving Problems Finding Solutions Sometimes it is difficult to figure out wher e to go for answers. Us e this chart to help you quickly find the answers to your questions. See page 36. See page 29. Get technical assistance from Dell.
24 Solving Problems www .dell.com | support.dell.com See page 40. See page 39 See page 37. See page 27 See page 34 See page 33. See page 26. See page 35.
Solving Problems 25 Finding Help Information Battery Problems CAUTION: There is a danger of a new b attery exploding if it is in correctly installed . Replace the battery only with the same or equivalent type recommended by the manufacturer . Discard used batteries according to the manufacturer's instructions.
26 Solving Problems www .dell.com | support.dell.com Drive Problems CD drive problems NOTE: High-speed CD drive vibration is normal and may cause noise, which does not indicate a defect in the drive or the CD.
Solving Problems 27 DVD drive problems NOTE: Because of different regions worldw ide and different disc formats, no t all DVD titles work in all DVD drives. Hard drive problems E-Mail, Modem, and Internet Problems NOTE: Connect the modem to an analog tel ephone jack only .
28 Solving Problems www .dell.com | support.dell.com C ONNECT THE MODEM DIRECTLY TO THE TELEPHONE WALL JACK — If you have other telephone devices sharing the line, such as an answering machine, fa x machine, surge protector , or line splitter , then bypass them and use the telephone to connect the modem directly to the telephone wall jack.
Solving Problems 29 Error Messages If the message is not listed, see the documentatio n for the operating system or the program that was running when the message appeared. E NSURE THAT YOU HAVE SUBSCRIBED TO AN I NTERNET SERVICE PROVIDER — Contact an Internet service provider to subscribe.
30 Solving Problems www .dell.com | support.dell.com General Problems The computer stops responding A program stops responding A program crashes repeatedly NOTE: Software usually includes ins tallation instructions in its documentation or on a CD.
Solving Problems 31 A solid blue screen appears Other software problems T URN THE COMPUTER OFF — If the computer does not respond to a keystrok e or a proper shutdown, press the power button for at leas t 8 to 10 seconds until the comp uter turns off.
32 Solving Problems www .dell.com | support.dell.com Other technical problems General hardware problems If your computer exhibits one or mor e of the fo llowing symptoms, a devi ce conflict may exist: • Y our computer locks up, particular ly while using a specific device.
Solving Problems 33 IEEE 1394 Device Problems NOTE: Check Windows Explorer to see if your device is listed as a drive. Keyboard Problems C HECK THE IEEE 1394 DEVICE — Ensure that the IEEE 1394 de vice is properly inserted into the connector .
34 Solving Problems www .dell.com | support.dell.com Mouse Problems R ESTART THE COMPUTER — 1 Simultaneously press <Ctrl><Esc> to display the Start menu. 2 Ty p e u , press the k eyboard arrow keys to highlight Shut down or Tu r n O f f , and then press <Enter>.
Solving Problems 35 Network Problems PC Card Problems NOTE: Y our computer is designed for 16-bit PCMCIA cards only. Do not use a 32-bit CardBus. R EINSTALL THE MOUSE DRIVER — See page 49. C HECK FOR INTERRUPT REQUEST CONFLICTS — See page 52. C HECK THE NETWORK CABLE CONNECTOR — Ensure that the network cable is connected as shown on page 16.
36 Solving Problems www .dell.com | support.dell.com Power Problems CAUTION: Before you begin any of the pr ocedures in this section, foll ow the safety inst ructions in the Product Information Guide . I F YOU HAVE PROBLEMS WITH A D ELL - PROVIDED PC C ARD — Contact Dell (see page 83).
Solving Problems 37 Printer Problems NOTE: Dell does not cover the printer’ s warranty. If you need technical assi stance for your printer , call the printer’ s manufacturer . See the printer documentation for the correct phone number . I F THE POWER LIGHT IS BLINKING AMBER — A device might be malfunctioning or incorrectly installed.
38 Solving Problems www .dell.com | support.dell.com Scanner Problems NOTE: Dell does not cover the scanner’ s warranty . If you need tech nical assistance for your scanner , call the scanner’ s manufactur er . See the scanner documentat ion for the correct phone number .
Solving Problems 39 Sound and Speaker Problems No sound from speakers NOTE: The volume control in some MP 3 players overrides the Windows ® volume setting. If you have been listening to MP3 songs, en sure that you did not turn the pl ayer volume down or off.
40 Solving Problems www .dell.com | support.dell.com No sound from headphones V ideo and Monitor Problems If the screen is blank NOTE: See the monitor docume ntation for troubles hooting procedures. R EINSTALL THE AUDIO ( SOUND ) DRIVER — See page 49.
Solving Problems 41 If the screen is difficult to read S WAP THE POWER CABLES — Swap the computer and monitor power cables to determine if the power cable is defective. T EST THE VIDEO EXTENSION CABLE ( IF USED ) — If you are using a video exte nsion cable and removing the cable solves the problem, the cable is defective.
42 Solving Problems www .dell.com | support.dell.com.
Advanced T roubleshooting 43 Advanced T roubleshooting Diagnostic Lights T o help you troubleshoot a problem, your computer is equipped with four lights on the back panel labeled "A," "B," "C," and "D" (see page 57).
44 Advanced T roubleshooting www .dell.com | support.dell.com Memory modules are detected, but a memory failure has occurr ed. • If you have one memory module installed, reinstall it (see page 68) and restart the computer .
Advanced T roubleshooting 45 A possible video card failur e has occurred. • If the computer has a video card, remove the car d and reinstall it (see page 66), and restart the computer . • If the problem still exists, install a video card that you know works and restart the computer .
46 Advanced T roubleshooting www .dell.com | support.dell.com Dell Diagnostics If you experience a problem with your computer , perform the checks in "Solving Problems" on page 23 and run the Dell Diagnostics before you contact Dell for technical assistance.
Advanced T roubleshooting 47 • Receive status messages that tell you whether tests completed successfully • Receive error messages if problems are detected Starting the Dell Diagnostics NOTICE: Only use the Dell Diagno stics to test your Dell™ computer .
48 Advanced T roubleshooting www .dell.com | support.dell.com 3 If you run a test from the Custom T est or Symptom T ree option, click the applicable tab described in the following table for more information. 4 Close the test screen to r eturn to the Main Menu screen.
Advanced T roubleshooting 49 5 Click Device Manager . 6 In the Device Manager window , scroll down the list to s ee if any device has an exclamation point (a yellow circle with a [ !] ) on the device icon. If an ex clamation point is next to the device name, you may need to reinstall the driver or install a new driver .
50 Advanced T roubleshooting www .dell.com | support.dell.com Using Microsoft Windows XP Sy stem Restore The Microsoft W indows XP operating system provides System Restore to allow you to r eturn your.
Advanced T roubleshooting 51 Undoing the Last Sy stem Restore NOTICE: Before you undo the last sy stem restore, save and close all open files and exit any open programs. Do not alter , open, or delete any files or programs until the sy stem restoration is complete.
52 Advanced T roubleshooting www .dell.com | support.dell.com Enabling Sy stem Restore If you reinstall W indows XP with less than 200 MB of free hard-disk space available, System Restore is automatically disabled. T o see if System Restore is enabled: 1 Click the Start button and click Control Pa n e l .
Adding Parts 53 Adding Parts Front and Back V iew of the Computer Front View NOTE: The front-panel door does not close when you are using cer tain PC Cards or IEEE 1394, USB, or headphone connectors.
54 Adding Parts www .dell.com | support.dell.com 1 breakaway hinges (2) T o prevent damage to your computer , the front door is designed to "break away" if it is opened too far . T o r e attach the front door , see page 57. 2 IEEE 1394 connector Attach high-speed serial mult imedia devices, such as digital video cameras.
Adding Parts 55 Back View NOTE: The front-panel door is removable; if you remove it or accidentally knock it off its hinges, it snaps back in place. For inst ructions on how to reattach the door , see page 57.
56 Adding Parts www .dell.com | support.dell.com 1 parallel connector Connect a parallel device, such as a printer , to the parallel connector . If you have a USB printer , plug it into a USB connector . 2 mouse connector Plug a standard mouse into the gr een mouse connector .
Adding Parts 57 Reattaching the Front Door T o pr event damage to your computer , the front door is designed to "break away" if it is opened too far . T o reattach the front door : 1 Shut down the computer through the Start menu (see page 21).
58 Adding Parts www .dell.com | support.dell.com 6 Align the two clips on the inside of the front door with the two hinge arms. 7 P ress inward on the front door un til it clips to both hinge arms.
Adding Parts 59 5 Remove the computer stand, if it is attached (see page 12). CAUTION: T o guard against electrical shock, alway s un plug your computer from the electrical outlet before opening the cover . NOTICE: Ensure that there is suffi cient space to support the open cove r—at least 30 cm (1 ft) of desk top space.
60 Adding Parts www .dell.com | support.dell.com Looking Inside Y our Computer CAUTION: Before you begin any of the proc edures in this section, fo llow the safety instructions located in the Product Information Guide . CAUTION: T o guard against electrical sh ock, alway s unplug your com puter from the electrical outlet before open ing the cover .
Adding Parts 61 Sy stem Board memory module connectors (DDR_A0, DDR_B0) page 68 hard drive connector (IDE1) battery socket (BA TTERY) page 79 CD drive connector (IDE2) main power connector (POWER) mic.
62 Adding Parts www .dell.com | support.dell.com Adding PC Cards (Optional) CAUTION: Before you begin any of the proc edures in this section, fo llow the safety instructions located in the Product Information Guide . Y ou can add PC Cards to computers with integrated PC Card connectors.
Adding Parts 63 Installing a PC Card NOTE: The length of some PC Cards may prevent the front-panel do or from closing. PC Cards ar e generally marked with a symbol (such as a triangle or an arrow) to indicate which end to insert into the slot, and the cards ar e keyed to pr ev ent incorrect insertion.
64 Adding Parts www .dell.com | support.dell.com Removing a PC Card NOTICE: Use the PC Card configuration utility on the task bar to select and stop a card from functioning before you remove it from the computer . If you do not remove the card in the c onfiguration utility , you could lose data from open programs.
Adding Parts 65 Adding Other Cards CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide . NOTICE: Y ou must use low-profile cards for your computer . A full-size card can cause damage to the computer or the card.
66 Adding Parts www .dell.com | support.dell.com 12 Reconnect any cables that you previously r emoved. 13 Connect any cables that should be attached to the card. See the documentation for the card for info rmation about the car d’s cable connections.
Adding Parts 67 Removing a Video Card 1 Remove the filler bracket by raising the hin ged lever and sliding the filler brack et up. 2 P ress the card lever towar d the PCI connector .
68 Adding Parts www .dell.com | support.dell.com Installing a Video Card NOTE: If you purchased the optional video card, ensure that you conn ected your monitor cable to the correct video connector . NOTICE: Y ou must use low-profile cards for your computer .
Adding Parts 69 The recommended memory configurations ar e: • Install a pair of matched memory modules in connectors DDR_A0 and DDR_B0 • Do not install ECC memory modules. • Be sure to install a single memory module in DDR_A0 or the connector closest to the processor before you install modules in the other connectors.
70 Adding Parts www .dell.com | support.dell.com 7 P ress out the securing clip at each end of the memory module connector . 8 Align the notch on the bottom of the mo dule with the crossbar in the connector .
Adding Parts 71 10 Close the computer cover (see page 72). 11 Attach the computer stand (see page 12). NOTICE: T o connect a network cable , first plug the cable in to the network wall jack and then plug it into the computer . 12 Connect your computer and devices to el ectrical outlets, and turn them on.
72 Adding Parts www .dell.com | support.dell.com Closing the Computer Cover 1 Ensure that all cables ar e connected , and fold cables out of the way . Gently pull the power cables toward you so that they do not get caught underneath the drives. 2 Ensure that no tools or e xtra pa rts are left inside the computer .
Appendix 73 Appendix Specifications Microprocessor Microprocessor type Intel ® P entium ® 4 L1 cache 8 KB first-level L2 cache 256-KB, 512-KB, or 1-MB pipelined-burst, eight-way set associative, wri.
74 Appendix www .dell.com | support.dell.com Memory Architecture DDR SDR AM Memory connectors two Memory capacities 128-, 256-, 512-MB, and 1-GB non-ECC DDR SDRAM Minimum memory 256 MB Maximum memory 2 GB Memory type 333-MHz DDR SDR AM (non-ECC) Drives Externally accessible one slimline optical bay one slimline 3.
Appendix 75 Audio Audio controller ADI 1980 Network Network controller integrated 10/100 Ethernet Controls and Lights P ower control push button P ower light green light on power button—blinking gr .
76 Appendix www .dell.com | support.dell.com Environmental T emperature: Operating 10 ° to 35 ° C ( 50 ° to 95 ° F) NOTE: At 35°C (95°F), the maximum operating altitude is 914 m (3000 ft). Storage –40 ° to 65 ° C (–40 ° to 149 ° F) Relative humidity 20% to 80% (noncondensing) Maximum vibration: Operating 0.
Appendix 77 Standard Settings The system setup program contains the standard settings for your computer . NOTICE: Unless you are an expert computer user , do no t change the settings for this program. Certain changes might make your co mputer work incorrectly .
78 Appendix www .dell.com | support.dell.com Viewing Settings 1 T urn on (or restart) your computer . 2 When the blue DELL™ logo appears, press <F2> immediately . If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft ® W indows ® desktop.
Appendix 79 6 Locate jumper PSWD on the system board (s ee page 61) and remove the jumper plug. 7 Close the computer cover (see page 72), plug yo ur computer into an electrical outlet, and turn on the computer . The existing passwor d(s) will be erased.
80 Appendix www .dell.com | support.dell.com 3 Ensure that your computer and attached de vices are turned off. If your computer and attached devices did not automatically turn of f when you shut down your computer , turn them off now .
Appendix 81 NOTICE: T o connect a network cable , first plug the cable in to the network wall jack and then plug it into the computer . 13 Connect your computer and devices to el ectrical outlets, and turn them on. 14 Enter the system setup program (see page 78) a nd restor e the settings you recor ded in step 1.
82 Appendix www .dell.com | support.dell.com FCC Notices (U.S. Only) Most Dell computer systems ar e classified by the F ederal Communications Commission (FCC) as Class B digital devices.
Appendix 83 • Connect the equipment into an outlet on a circ uit different from that to which the r eceiver is connected. • Consult the dealer or an experienced radio/television technician for help.
84 Appendix www .dell.com | support.dell.com Argentina (Buenos Aires) International Access Code: 00 Country Code: 54 City Code: 11 W ebsite: www .dell.com.ar E-mail: us_latin_services@dell.com E-mail for desktop and portable computers: la-techsupport@dell.
Appendix 85 Barbados General Support 1-800-534-3066 Belgium (Brussels) International Access Code: 00 Country Code: 32 City Code: 2 W ebsite: support.euro .dell.com E-mail for F rench Speaking Customers: support.euro .dell.com/be/fr/emaildell/ T echnical Support 02 481 92 88 T echnical Support F ax 02 481 92 95 Customer Care 02 713 15 .
86 Appendix www .dell.com | support.dell.com Chile (Santiago) Country Code: 56 City Code: 2 Sales, Customer Support, and T echnical Support toll-free: 1230-020-4823 China (Xiamen) Country Code: 86 City Code: 592 T echnical Support website: support.dell.
Appendix 87 Czech Republic (P rague) International Access Code: 00 Country Code: 420 City Code: 2 W ebsite: support.euro .dell.com E-mail: czech_dell@dell.
88 Appendix www .dell.com | support.dell.com F inland (Helsinki) International Access Code: 990 Country Code: 358 City Code: 9 W ebsite: support.euro .
Appendix 89 Germany (Langen) International Access Code: 00 Country Code: 49 City Code: 6103 W ebsite: support.euro .dell.com E-mail: tech_support_central_europe@dell.
90 Appendix www .dell.com | support.dell.com Hong Kong International Access Code: 001 Country Code: 852 W ebsite: support.ap.dell.com E-mail: apsupport@dell.
Appendix 91 Italy (Milan) International Access Code: 00 Country Code: 39 City Code: 02 W ebsite: support.euro .dell.com E-mail: support.euro .dell.com/it/it/emaildell/ Home and Small Business T echnic.
92 Appendix www .dell.com | support.dell.com Japan (Kawasaki) International Access Code: 001 Country Code: 81 City Code: 44 W ebsite: support.jp.dell.com T echnical Support (servers) toll-free: 0120-1.
Appendix 93 Latin America Customer T echnical Support (Austin, T exas, U.S.A.) 512 728-4093 Customer Service (Austin, T exas, U.S.A.) 512 728-3619 F ax (T echnical Support and Customer Service) (Austin, T exas, U.S.A.) 512 728-3883 Sales (Austin, T exas, U.
94 Appendix www .dell.com | support.dell.com Mexico International Access Code: 00 Country Code: 52 Customer T echnical Support 001-877-384-8979 or 001-877-269-3383 Sales 50-81-8800 or 01-800-888-3355 .
Appendix 95 Norway (L ysaker) International Access Code: 00 Country Code: 47 W ebsite: support.euro .dell.com E-mail Support (portable computers): nor_nbk_support@dell.com E-mail Support (desktop computers): nor_support@dell.com E-mail Support (servers): nordic_server_support@dell.
96 Appendix www .dell.com | support.dell.com St. Lucia General Support 1-800-882-1521 St. V incent and the Grenadines General Support toll-free: 1-877-270-4609 Singapore (Singapore) International Acce.
Appendix 97 Sweden (Upplands V asby) International Access Code: 00 Country Code: 46 City Code: 8 W ebsite: support.euro .dell.com E-mail: swe_support@dell.com E-mail Support for Latitude and Inspiron: Swe-nbk_kats@dell.com E-mail Support for OptiPlex: Swe_kats@dell.
98 Appendix www .dell.com | support.dell.com T rinidad/T obago General Support 1-800-805-8035 T urks and Caicos Islands General Support toll-free: 1-866-540-3355 U.K. (Bracknell) International Access Code: 00 Country Code: 44 City Code: 1344 W ebsite: support.
Appendix 99 U.S.A. (Austin, T exas) International Access Code: 011 Country Code: 1 Automated Or der-Status Service toll-free: 1-800-433-9014 AutoT ech (portable and desktop computers) toll-free: 1-800.
100 Appendix www .dell.com | support.dell.com.
Index 101 Index A audio . See sound B battery problems, 2 5 replacing, 7 9 BIOS, 77 booting to a USB device, 21 C car ds adding, 6 5 connectors, 6 1 CD drive light, 5 4 problems, 2 6 CD-R W drive prob.
102 Index 102 Index hardwar e drivers, 4 8 problems, 3 2 Hardwar e T roubleshooter , 52 Help and Support Center , 10 help files a c c e s s i n g , 9-10, 25 Hyper - Threading, 20 I IEEE 1394, 16 probl.
Index 103 problems (continued) monitor is blank, 4 0 network, 3 5 other , 3 2 PC cards, 3 5 power , 3 6 power light conditions, 3 6 printer , 3 7 program crashes, 3 0 program stops responding, 3 0 pro.
104 Index 104 Index.
デバイスDell H7228の購入後に(又は購入する前であっても)重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります:
Dell H7228をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはDell H7228の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Dell H7228の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Dell H7228で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Dell H7228を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はDell H7228の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Dell H7228に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちDell H7228デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。