Sony EricssonメーカーGC79の使用説明書/サービス説明書
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GC79 Sony Ericsson GPRS / Wire less LAN PC Card GC79 User’s Guide.
2 Contents Content Content . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Hardware Ove rview . . . . . . .
Contents 3 Start Using Wirele ss Manage r . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 W irele ss Manager Icons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Icon Menus . . . . . . . . . . . . . . . . .
4 Contents A ppendix B - Window s Log on usi ng a GSM/GPRS Dial-up Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82 A ppendix C - Changing the GC79 Wireles s LA N A dapter Properties . . . . . . . . .
Contents 5 Sony E ricsson GP RS / Wir eless LA N PC C ard GC79 Fifth edit ion (June 2004) This m anual is publi shed by Sony Eric sson Mo bile Com munic atio ns AB, witho ut any warr anty .
6 Introduction Introduction Congratul ations and thank y ou for buying the Sony Ericsson GPRS / Wir eless L AN PC Card GC79. The GC79 is a combined wireless LAN (WLAN) adapt er and trip le band GSM p roduct that enables you to comm unicate w irelessly from you r laptop on all fiv e continents , in over one hu ndred and sixty coun tries.
Introduction 7 Sof twar e Overview Wireless Manager You can use th e Wireless Manager to: • V iew GSM/GPRS and w ireless LA N statu s inform ation • Create or modify connection settin gs • Conne.
8 Getting Started Getting S t arted Checklist Make sure the f ollowing items are in th e box when you un pack it: • Pro tective case for storing the GC79 • GC79 PC Card • Qui ck S ta rt Guide • CD -ROM The CD contains: drivers, sof tware, docum entation and a readme f ile.
Getting Started 9 High Speed Circuit Switched Data (HSCSD) HSCSD is an enchanced GSM netw ork capability of fered by some n etwork operators. It enables circuit switched data connections to run at a higher data sp eed, using m ore than one wireless ‘timeslot’ for the data transm ission.
10 In stal lat ion Inst allation The Wireless Manager CD-R OM contains the sof tware required to operate your GC79. The softw are is simple to set up and operate.
Installation 11 If you want to us e your other PC card slot remove th e GC79 whils t you ins ert the other card. See Safe Removal of the GC79 on page 39 for more details. When the GC79 isn 't in use it is recomm ended that you store it in th e protective carrier pr ovided.
12 In stal lat ion 6. Af ter a f ew seconds , the Ne w H ardw are Wizard open s and i nstalls the n ecessa ry dri vers on to you r PC from the Wireless Man ager CD. The wizard may require you to locate a specific driver file. If this h appens a dialog opens, click Browse and select : In the above table D is referred to as your CD drive.
Create a GPRS, HSCSD or CS D Connection 13 Create a GPRS, HSCSD or CSD Connection Predefined custom ised connection setti ngs m ay hav e already been entered by your m obile operator or IT Manager. Check t he connection drop-dow n m enu for an y exis ting entries , if they are available go to Us ing y our Conn ection on pag e 23.
14 Create a GP RS, HSCSD or CSD Connection Fixed: The sam e fixed usernam e and passw ord for all users. Check or enter the usern ame and passw ord and tick the Save Password bo x. Per son al: You have a personal usern ame and passw ord. You may enter them here and tick the Save Pas sword box.
Create a GPRS, HSCSD or CS D Connection 15 Not e: If you are uns ure which sp eed to c hoose fro m the Sp eed tab, start with Analogue 9 600, and check to see if it works. O nce your connection wor ks on Analog, you can try the V 110/V120 setti ngs to se e if fast er spee ds are a vailab le.
16 Create a GP RS, HSCSD or CSD Connection Using your Connection T o Connec t 1. Open W ireless Manager . 2. If requested enter y our SIM Card PI N and click OK . The S tatus screen is displayed. 3. Select the connection you require from the drop down list and click Connect .
Create a Wirele ss LA N Connection 17 Create a Wireless LA N Connection To create a connection to a wireless L AN access point, follow the steps described below. Not e: For details of how to crea te an a d hoc grou p connec tion, see Setting up an Ad Hoc Grou p Net wor k on page 23.
18 Create a Wire less LA N Connection 4. Click Add . The W ireless Netw ork Properties screen is displayed. 5. T ype the netw ork name in the Net w ork na m e (S SID ) fie ld . 6. C lea r the This is a computer -to-c om puter (ad ho c) netw ork; w irele ss access po ints are not used check box.
Create a Wirele ss LA N Connection 19 Not e: You do not ne ed to se lect the Key format or the Key l ength befo re typing the network key. These settin gs autom atically ch ange to th e appro priate set ting as you t ype the network k ey value. However, the ke y value you enter must be t he correct length .
20 Create a Wire less LA N Connection In the Wireless Zero Conf ig control panel (Double-click th e W icon in the status tray ): 1. Disable 802.1x. 2. Enable WEP . 3. Uncheck th e box that says "T he key is provided for me autom atically". 4.
Create a Wirele ss LA N Connection 21 Vi ewing the St atus of y our Wire less Connection The quality of the connection (sig nal streng th and n oise) of the particular netw ork you are connected to is.
22 Create a Wire less LA N Connection Disabling the Radio To disable the GC79 wireless L AN radio, right click and select Disable Radio. To enable the radio, right click and select Enable Radio. Alternativ ely, us e the Disable/Enable button on the rig ht hand side of the Wireless Man ager Status screen or the option in the File m enu.
A dvanced Wireless LA N Feature s 23 A dv anced Wireless LA N Features Setting up an Ad Hoc Group Network In ad- hoc m ode, a peer-t o-peer n etw ork i s created. An exam ple m ig ht be n etw orki ng lapt ops in a meetin g room in order to share inform ation.
24 A dvanced Wireless LA N Features 15. Click Advanced an d select the approp riate radio button to specify the Netw orks the GC79 can access. Y ou can se lect either; Com puter to com pute r (ad hoc) networks onl y or Any available network (access p oint preferr ed) .
A dvanced Wireless LA N Feature s 25 After a whil e a new win dow sh ould popup in PC2 show ing the hardrive of PC1. It is also lis ted with your Netw ork Drives. Tip: See your W indows documenta tion for further deta ils on settin g up a network of W indows PCs.
26 A dvanced Wireless LA N Features Bridge connections on Windows XP The netw ork bridge allows y ou to connect netw ork segm ents by selecting the appropriate netw ork connection and bridging them tog ether. The network bridge m anages y our netw ork segm ents, and creates a single IP subnet for the entire netw ork.
A dvanced Wireless LA N Feature s 27 Creating profiles for ICS Client machines Set up an ad hoc netw ork on y our host m achine and each client. Follow th e Create a W ireless LAN Connection on page 17.
28 A dvanced Wireless LA N Features 1. Open the Wir eless Conf iguration Utility, as described in Create a W ir eless LAN Connection on page 17, and click on the Diagnostics tab. 2. Select the te sts you want to run. All tests a re select ed by default.
Wireless Manager Status S creen 29 Wireless Manager S t atus Screen To view th e Statu s scree n eith er start Wireless Manag er select S tart Program s Son y Erics son Wireless Manager o r select y our desktop shortcut or select View Status . The Status screen sh ows in formation about y our GSM and w ireless LAN network conn ections.
30 Wireless Manager Status S creen When a connection is established, the connection s tatistics (duration, bytes tran smitt ed, bytes received) are displayed and updated at regular intervals . Not e: Statistics display i s not s upported o n W indow 98(SE) or Me platforms .
Start Using Wirele ss Manager 3 1 S t ar t Using Wi reless Manager 1. T o start W ireless Man ager select S tart Progra m s Sony Erics son Wir eless Manager or select your desktop sh ortcut . 2. If requested, enter y our SIM Card/Phone Lock PIN and click OK .
32 Start Using Wirele ss Manager GSM/ GPR S I con s Wireless LA N Icons Window s Icons In addition, the followi ng stan dard Windows ® operating sy stem icons also ap pear in the sy stem tray wh en the GC79 is ins erted in your PC and in use. GSM/GPRS radio is disa bled.
Start Using Wirele ss Manager 3 3 Icon Menus GC79 GSM/GPRS menu Right clic k on e of the fo llowing i co ns to see the GC 79 GSM /GP RS menu options. Not e: Some of the these me nu option s are d isabled, dependin g on the c urrent stat e of the GC79.
34 Start Using Wirele ss Manager Exit Exits th e Wireless Manager application completely .Use the stop/rem ove comm ands if you w ish i t to remain in the background.
Start Using Wirele ss Manager 3 5 Making W indows Network Conne ctions V isible The Windows conn ection icons, display ed in the sy stem tray , normall y disappear once a connection is m ade. T his m eans that y ou m ay not necess arily see a icon corresponding to each of the icons for y our GSM/GPRS and wi reless LAN conn ections.
36 Start Using Wirele ss Manager Radio Power T ab You can use th is tab to manage th e state of the radio transm itter. When this option is selected, the Wireless Manager radio power startup and sh utdown ch oices are disabled. Enable Radio imme diate ly w hen card inserted Y ou s hould nor mally leave th is chec kbox turned of f.
Start Using Wirele ss Manager 3 7 T ext Messaging T ab You ca n use this tab to ena ble recepti on of s pecific mes sage c lasses f rom t he SMS Cell Broa dcast se rvice and to set the SMS received audio alarm to on or o ff . Select the radio buttons to activate the options.
38 Start Using Wirele ss Manager Miscellaneous T ab Click the Miscellaneous tab. • Hide to tray when minim ized If enabled, w hen the W ireless Manager is minim ized, it removes any w indow from the tas kbar , and only show s the small icon in the sys tem tray .
Start Using Wirele ss Manager 3 9 • Show menu item for Modem Software Update If this option is check ed, a File Modem Software Update... men u item is enabled. Selecting this me nu com m and prepare s the GC79 PC card to receiv e a soft ware u pdate fr om th e Sony Eric sson Update Ser vice.
40 Wireless Manager Telephony S ettings Screen Wireless Manager T elephony Setting s Scree n The Telephony Setting s screen allow s you view and change th e GSM and wireles s LAN sett ings of the GC79. The functions of the Telephony Set tings screen are v ery sim ilar to the setting s that y ou have access to via a mobile phone’ s display.
Wireless Manager Telephony S ettings Screen 41 Phone Numbers My numbers You can list all y our own num bers here. T he nu mbers are for personal reference only and have no operational effect on the GC 79. V oice line 1 and 2: The voice num ber or nu mbers issu ed with y our SIM card that you u se for normal voice calls .
42 Wireless Manager Telephony S ettings Screen T o Change the Phone Lock code: 1. Click . 2. The Change the Phone Lock Code dialog opens. Make the required chang es and click OK . 3. Click Apply when you h ave finis hed, to transfer the changes back to your GC79.
Wireless Manager Telephony S ettings Screen 43 Choosing another network: 1. Uncheck th e Automatically choose a network for me . 2. Select the netw ork that y ou w ant to use. 3. Click App ly to transfer the setting to your GC79. The mess age Please wait appears briefly on the s creen.
44 Wireless Manager Telephony S ettings Screen Frequency Ba nd GSM operates in a num ber of different frequen cy bands, w here available. 900 and 1800 MHz are used in Europe, As ia, Australasia an d Africa, w hilst the 1900 MHz band is us ed in North and South Am erica.
Wireless Manager Telephony S ettings Screen 45 Selecting a fax forwarding setting: 1. T o ob tain y our current fax forw arding settin gs from the netw ork, click Retrieve . 2. Select Always if you w ant to forw ard all the incom ing calls to a specific phon e num ber .
46 Wireless Manager Telephony S ettings Screen Restricting Fax and Data Calls To Change the call restrict statu s for fax and data calls: 1. T o get your current call restrict set tings from the netw ork, click Retrieve . 2. T i ck the boxes next to the call types that you want to restrict.
Wireless Manager Phone Book S creen 47 Wireless Manager Phone Boo k Screen The Wireless Manager Phone Book screen helps y ou to organize your GC 79’s SIM Phone Book. The Phone Book Sc reen A SIM Phone Book can easily become disorganis ed; you can us e the Phone Book screen to manag e your SIM Phone Book entries.
48 Wireless Manager Phone B ook Screen Phone Book Functionality T o A dd a Number: 1. Select Add new in th e Phone Book menu or click on the toolbar or key Ctrl an d N . 2. The New Phone Book Entr y dialog opens. 3. Enter the nam e and phone num ber .
Wireless Manager Phone Book S creen 49 To M o v e a n E n t r y : 1. Select an entry. 2. Select Move T o in the Phone Book men u. The Move T o option is followed by the nam e of the Phone Book you haven’t selected the entry from. 3. The entry is m oved from its current Phone Book and placed in the selected one.
50 Wireless Manager Phone B ook Screen Not e: The file will be s aved as a te xt file in com ma separa ted value (CSV) format. 6. Clic k OK in t he brow se dia log. The path and f ile nam e are display ed in th e Export Fil e Name fiel d. 7. Click Ex port to com plete the procedure.
Wireless Manager SMS Messages Scre en 5 1 W ireless Manager SMS Messa ges Screen The Wireless Manager’s SMS Messages screen enables y ou to view , compose, edit, save, copy, delete, reply or forward SMS m essages from y our GC79 to other mobile devices.
52 Wireless Manager SMS Messages Sc reen Each tim e the S MS Messages screen receives a new SMS m essage from th e SIM it ch ecks the status of the SIM Inbox. If the SIM Inbox is full , a SIM Full icon is displayed in the left pane of the screen, see SIM Inbox is Full: on page 54.
Wireless Manager SMS Messages Scre en 5 3 Reply to an SMS: 1. Select the folder w here the m essage is located. 2. From th e list, select the m essage y ou w ant to reply to. The contents of th e mess age are displayed in the inf ormation vi ew . 3. Select Reply in the Messages men u.
54 Wireless Manager SMS Messages Sc reen Not e: To move all me ssages, clic k Select All from the Edit me nu before you select Move to Saved Mes sages . Cop y an SM S: 1. Select the folder w here the m essage y ou wan t to cop y is located. 2. From the list, se lect t he message.
Wireless Manager Online Ser vices Screen 55 Wireless Manager Onlin e Serv ices Scre en Online Serv ices is a custom ised service offered by a netw ork operators.
56 Troubleshooting T roubleshoo ting This chapter lists som e problems th at you m ight en counter w hile usin g your GC 79. Some problems require y ou t o contact your service prov ider, but m ost of the problems you c an easi ly c orrect you rself.
Troubleshooting 57 Wire less Manager I con Errors Sof twar e Errors app ears in the task bar GC79 isn't present, pl ease insert. appears in the task bar Indicates that th e GSM/GPRS rad io is turned off. Right-click the icon and select T urn GS M /GPRS Radio On .
58 Troubleshooting GSM/GPRS Error Messages General SIM Card Errors Wire less LAN Error Messages Modem not responding.... Error Check that the radio i s turned on. Dial-Up fails T ry to conne ct again. Wrong PIN/ Wrong PIN2 Y ou have en tered y our PIN or P IN2 incorrectly .
Troubleshooting 59 Wire less LAN Performance and Connectivity Problems Data transfer is sometimes very slow Microwav e ovens and som e cord less phon es operate at the same radio frequency as the GC79 wi reless LAN adapter. When the m icrow ave oven or cordless phone is in use, it in terferes wi th the wir ele ss ne twork.
60 Troubleshooting Window s Error C odes Window s ® 98 Error 619 : The port is disconnected during dial-up An ISDN mode (V1 10 or V120) has been sele cted when creat ing a connection , but is not sup ported by the netw ork. Select Anal ogue mode whe n creating the con nection in th e Connection Wizard .
Troubleshooting 61 Window s ® 2000 A ll Window s ® Operating S ystems Error 619 : The port is disconnected during dial-up An ISDN mode (V1 10 or V120) has been sele cted when creat ing a connection , but is not sup ported by the netw ork. Select Anal ogue mode whe n creating the con nection in th e Connection Wizard .
62 Troubleshooting Connection Failed or A ctivation Failed. Please contact your Service Prov ider . No spec ific reaso n for f ailure is available. W ait a few m inutes and try again. If you con tinue to ge t this error check you r connection settin gs or call y our service p rovider for help.
Troubleshooting 63 Connection Failed. Plea se try again. If the problem continues please cont act your Se rvice Provider . Y ou couldn’t connect to the ne twork. W ait a few minutes and try again. If the problem persists cont act y our service provider .
64 A dditional Information A dditional Information Sony Ericsson Support W eb Site At ww w.sonyericsson.com if y ou select support you can find help and tips in a f ew click s.
A dditional Information 65 Radio Frequency (RF) Exposure and SA R Your PC Card is a low- power radio transmit ter and receiver (transceiver). When it is turned on, it em its low levels of radio frequency energy (also kn own as radio w aves or radio frequency fields).
66 A dditional Information Emergency Calls GC79s man ufactured by Sony Ericsson do not su ppor t voice calls, hen ce their use for essen tial comm unication s (e.g. medical em ergencies) is not possible. Inserting and removing the SIM card – prec autions against electrostatic discharge (ES D) Do not touch th e SIM card connectors.
A dditional Information 67 T echnical S pecifications Exterior Desc ription A mbient T emper atures Electrical Cha racteristics Product name GC7 9 PC Card T ype 32-bit Cardbus System W L AN 2.4GHz ISM band E-GSM 900 GSM 1800 GSM 1900 Services s upported WLAN : 802 .
68 A dditional Information Operating System Support Supplied Softw are (on CD-ROM) GSM Performance and technical chara cteristics Supported Operating System s Microsoft W indow s ® 98SE Microsoft W i.
A dditional Information 69 GSM Features Supported CSD technical data HSCSD Maximum Data Rates (kbps) The sp eed s given are maximums, Sony Ericsso n canno t guaran tee how fast your network will op era te. Receiver RF Le ve l -102 dBm -102 dBm -102 dBm Receiver RX Bit Error Rat e <= 10 -4 (S tatic Ch.
70 A dditional Information GPRS technical data GPRS Specification SM G SMG31bis Dat a Rat es Multislot class 10 suppo rted (see table belo w). Coding schemes: CS-1, CS -2, CS-3 and CS-4 Mode of Operat.
A dditional Information 71 GPRS Maximum Dat a Rates Speed achieved depends on the C oding Schem e supported by the GSM Netw ork. The speeds given are maxim um s, Sony Ericsson cannot gu arantee how f ast your net work w ill operate. At the tim e of w riting, CS- 2 is the most comm only us ed cod ing scheme.
72 A dditional Information Soft ware Upgrade Fax T ec hnical Data WLAN T echnica l Dat a Radio power output PC Card s of tware upgrade Via secure internet dow nload (S ony Ericsson Update Ser vice ) or at a So ny Erics so n Serv ice P oint. PC Wireless Manager Internet dow nload.
A dditional Information 73 Supported Languages Quick Start Guide PC Sof tw are User ’s Guide (PDF) English (EN) Brazil ian-Portugue se (PB) Danish (DA) Dutch (NL) Finnish (FI) French (FR) Germa n (D.
74 A dditional Information License Agreement License Any use of the en closed compact disc, diskette or any other media inclu ding upgrades thereof (“the Software”) shall be in accord ance w ith the below stated license ter ms and conditions.
A dditional Information 75 Our W ar ranty Subj ect t o th e co ndi tio ns of this L imited War rant y, So ny Eri csso n warr ant s this Pr od uct t o b e fr ee from defects in design, m aterial and workm anship at the tim e of its original purch ase by a consum er, and for a subsequent period of one (1) year.
76 A dditional Information Some coun tries/states do not allow the exclusion or lim itation of inciden tal or consequential damages , or limitation of the du ration of implied w arranties, so the preceding lim itations or excl usio ns may no t ap ply t o you.
A dditional Information 77 Disputes a nd Gov erning La w The va lidity , con struct ion an d perform anc e of th is A greem ent shall be gov erned by th e law s of Sw eden.
78 A dditional Information Declaration of Conformity We, Sony Ericsson Mobile Comm unications AB of Nya Vattentornet S-221 88 Lund, Sweden declare under our sole responsibility th at our product, Sony.
A dditional Information 79 FCC St atement This device complies w ith Part 15 of the FCC ru les. Operation is subject to the followi ng tw o conditions: (1) This device may not cause harm ful in terference, and (2) The device must accept any i nterference received, includin g interference th at may cause undesired operation.
80 A ppendix A - GSM Connection Parameter s A ppendix A - GSM Connection Parameters General Connec tion Paramete rs for CSD/HSCSD and GPRS Required Useful in formation T elephone number or Access Point Name (APN) Number you need to dial to reach your serv ice provider.
A ppendix A - GSM Connection Parameter s 8 1 CSD/HSCSD S pecific Para meters * On ly available w ith ISDN V.110 or V.120 connecti on mode. Required Useful in formation Preferred Connection Speed (bits.
82 A ppendix B - Windows Log on using a GSM/GPRS Dial-up Connection A ppendix B - W indow s Log on using a GSM/GPRS Dial-up Connection The GC79 PC Card supports the Win dows Log on us ing dial-up connectio n featu re.
A ppendix C - Changing the GC79 Wire less LA N A dapter P roperties 83 A ppendix C - Changing the GC79 Wireless LA N A dapter Properties 1. Click th e St art button. 2. Select Settings Control Panel . 3. Click System . 4. Select the Hardware tab. 5. Select Device Manager Ne twor k ad ap ters 802.
84 A ppendix C - Changing the GC79 Wire less LA N A dapter P roperties Power Save Mode This is used to put the GC79-enabled computer into t he IEEE 8 02.1 1 Powe r Save mode. In Power Save mode, the radio i s periodi cally p owered down to cons erve power .
A ppendix D- Initiating a HSCS D Connection from Outside the Wireless M anager 85 A ppendix D- Initiatin g a HSCSD Connection from Out side the W ireless Manager The HSCSD s peed is normally entered in the Wireless M anager Connect ion Wizard.
86 A ppendix D- Initiating a HSC SD Connection from Outside the Wireless M anager The table below show s the A T Com man ds for each speed and bearer: Not e: Speeds relat e to the receiv e (downlin k) speed. W hen co nnected at 43.2 or 5 7.6, uplink (tran smit) speed will be 14.
A ppendix E- IT Manager Customisation 87 A ppendix E- IT Manager Customisation The Wireless Manager m ay be custom ised prior to deploym ent in a larg e organisation. Irrelevant connection inf ormation can be rem oved from the pre-s et list in the Conn ection Wizard.
88 Glossary Glossary 802.11 A s tan dard de vel oped by t he IE EE. Th e 802 f am ily of standards relates to local and wide area networks . 802 .11 refers to WLAN stan dards. 802.11b The IEEE standard relating to WLAN operating at 2.4G Hz a nd h av in g a ma xim u m spe ed of 11M bps .
Glossary 89 GSM 900 The GSM sy stem f amily inclu des GSM 900, GSM 1800 and GSM 1900. T here are different phases of roll-out for the GSM sy stem an d GSM phones are either phase 1 or phase 2 compliant. GSM 1800 Also know n as DCS 1800 or PCN, this is a GSM digital netw ork working on a frequency of 180 0 MHz.
90 Glossary PDP Packet Data Protocol. Phone book A m emory in the SIM card where phone n umbers can be stored and accessed by name or position. PSTN Public S wi tched Tele phone N etw ork, f or exam ple or dinary analogue phone line f or speech and/or co m puter modem .
Glossary 91 WEP Wired Equivalent Privacy. A n encry ption service built in to m any 802.11 products inten ded to m ake t he conn ection secure. WiFi Wireless Fidelity. The popular nam e for 802. 11 technologies that hav e passed WiFi C ertification Testing, for w hich WECA is responsi ble.
92 Index Index A Ad hoc g roup netw ork 23 C Circuit Sw itched Data (CSD) 8 Connection details 30 Conn ect ion s etup CSD 14 GPRS 13 HSCSD 14 Wireless LAN 17 Conn ect ion t o a wirel ess LAN 20 CSD c .
Ind ex 93 T T echn ical support 9, 64 T elephon y Setting s Forward Calls 44 Loc ks 41 Networks 42 Phone Num bers 41 Restrict Calls 45 Wireless 46 U Upgrades 9, 64 W W in dow s dial -u p co nn ecti on.
デバイスSony Ericsson GC79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:
Sony Ericsson GC79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Sony Ericsson GC79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。Sony Ericsson GC79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。Sony Ericsson GC79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。
Sony Ericsson GC79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Sony Ericsson GC79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、Sony Ericsson GC79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Sony Ericsson GC79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。