SonyメーカーD5303/D5306の使用説明書/サービス説明書
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User guide Xperia ™ T2 Ultra D5303/D5306.
Contents Getting started ...............................................................................6 About this User guide ........................................................................6 Overview ........................................
SIM card protection ......................................................................... 35 Screen settings ................................................................................ 35 Screen lock ..........................................
Email account settings ..................................................................... 60 Gmail™ ............................................................................................ 60 Music ............................................
Travel and maps ......................................................................... 102 Using location services .................................................................. 102 Google Maps™ and navigation ................................
Getting started About this User guide This is the Xperia™ T2 Ultra User guide for the Android™ 4.3 (Jelly Bean) software version. If you're not sure which software version your device is running, you can check it via the Settings menu. For more information about software updates, see Updating your device .
11 Main camera lens 12 Camera light 13 Second microphone 14 Charger/USB port cover 15 NFC detection area 16 Memory card slot cover 17 Loudspeaker Assembly A protective plastic sheet is attached to the screen. You should peel off this sheet before using the touchscreen.
1 Insert a fingernail into the gap between the micro SIM card slot cover and the device, then detach the cover. 2 Using a fingernail, pull out the micro SIM card holder. 3 Place the micro SIM card on the holder, with the gold-coloured contacts on the micro SIM card facing up.
Starting your device for the first time The first time you start your device, a setup guide opens to help you configure basic settings, sign in to some accounts, and personalise your device. For example, if you have a Sony Entertainment Network account, you can sign in to it here and get set up straight away.
To set up a Google™ account on your device 1 From your Home screen, tap . 2 Find and tap Settings > Add account > Google . 3 Follow the registration wizard to create a Google™ account, or sign in if you already have an account. You can also sign in to or create a Google™ account from the setup guide the first time you start your device.
Learning the basics Using the touchscreen Tapping • Open or select an item. • Mark or unmark a checkbox or option. • Enter text using the on-screen keyboard. Touching and holding • Move an item. • Activate an item-specific menu. • Activate selection mode, for example, to select several items from a list.
Pinching and spreading • Zoom in or out on a web page, a photo or a map. Swiping • Scroll up or down a list. • Scroll left or right, for example, between Home screen panes. 12 This is an Internet version of this publication. © Print only for private use.
Flicking • Scroll quickly, for example, in a list or on a web page. You can stop the scrolling movement by tapping the screen. Locking and unlocking the screen When your device is on and left idle for a set period of time, the screen darkens to save battery power and locks automatically.
To go to the Home screen • Press . To browse the Home screen Home screen panes You can add new panes to your Home screen (up to a maximum of seven panes) and delete panes.
Application screen The Application screen, which you open from the Home screen, contains the applications that come pre-installed on your device as well as applications that you download. To view all applications on the Application screen 1 From your Home screen, tap .
To uninstall an application from the Application screen 1 To open the Application screen menu, drag the left edge of the Application screen to the right. 2 Tap Uninstall . All uninstallable applications are indicated by . 3 Tap the application that you want to uninstall, then tap Uninstall .
To open a small app 1 To make the small apps bar appear, press . 2 Tap the small app that you want to open. You can open several small apps at the same time. To close a small app • Tap on the small app window. To download a small app 1 From the small apps bar, tap , then tap and tap .
To add a widget to the Home screen 1 Touch and hold an empty area on your Home screen until the device vibrates, then tap Widgets . 2 Find and tap the widget that you want to add. To resize a widget 1 Touch and hold a widget until it magnifies and the device vibrates, then release the widget.
1 Access a folder containing applications 2 Access an application using a shortcut To add a shortcut to your Home screen 1 Touch and hold an empty area on your Home screen until the device vibrates and the customisation menu appears. 2 In the customisation menu, tap Apps .
To change your Home screen wallpaper 1 Touch and hold an empty area on your Home screen until the device vibrates. 2 Tap Wallpapers and select an option. To set a theme 1 Touch and hold an empty area on your Home screen until the device vibrates. 2 Tap Themes , then select a theme.
To open or close the Notification panel You can also double tap to open the Notification panel. To take action on a notification • Tap the notification. To dismiss a notification from the Notification panel • Place your finger on a notification and flick left or right.
Battery status The battery is charging STAMINA mode is activated Airplane mode is activated The Bluetooth® function is activated The SIM card is not inserted The microphone is muted The speakerphone .
Application overview Use the Alarm and clock application to set various kinds of alarms. Use your web browser to navigate and view web pages, manage bookmarks, and manage text and images. Use the Calculator application to perform basic calculations. Use the Calendar application to keep track of your events and manage your appointments.
Download and install new applications and updates. Some applications are not supported by all networks and/or service providers in all areas. 24 This is an Internet version of this publication.
Downloading applications Downloading applications from Google Play™ Google Play™ is the official online Google store for downloading applications, games, music, movies and books.
Internet and networks Browsing the web The Google Chrome™ web browser for Android™ devices comes pre-installed in most markets. Go to http://support.google.com/chrome and click the "Chrome for Mobile" link to get more detailed information about how to use this web browser.
To download Internet and messaging settings 1 From your Home screen, tap . 2 Find and tap Settings > More… > Internet settings . 3 Tap Accept . appears in the status bar once the settings have been downloaded successfully. If the settings cannot be downloaded to your device, check the signal strength of your mobile network.
To connect to a Wi-Fi® network automatically 1 Make sure that the Wi-Fi® function is turned on. 2 Drag the status bar downwards, then tap . 3 Tap Wi-Fi . All available Wi-Fi® networks are displayed. 4 Tap a Wi-Fi® network to connect to it. For secured networks, enter the relevant password.
shared, the sharing devices can use your device's data connection, for example, to surf the Internet, download applications, or send and receive emails. You may need to prepare your computer to establish a network connection via USB cable. Go to www.
To set a data usage warning 1 Make sure that you have turned on data traffic. 2 From your Home screen, tap . 3 Find and tap Settings > Data usage . 4 To set the warning level, drag the lines to the desired values. You receive a warning notification when the amount of data traffic approaches the level you set.
To activate automatic network selection 1 Drag the status bar downwards, then tap . 2 Find and tap More… > Mobile networks > Service providers .
Synchronising data on your device About synchronising data on your device You can sync contacts, email, calendar events, and other information with your device from multiple email accounts, synchronisation services and other kinds of accounts, depending on the applications installed on your device.
To set up corporate email, calendar and contacts for synchronisation 1 From your Home screen, tap . 2 Tap Settings > Add account > Exchange ActiveSync . 3 Enter your corporate email address and password. 4 Tap Next . Your device begins to retrieve your account information.
Basic settings Accessing settings View and change settings for your device from the Settings menu. The Settings menu is accessible from both the Notification panel and the Application screen. To open the device settings menu from the Notification panel 1 Drag the status bar downwards.
To set your device to vibrate and ring mode 1 From your Home screen, tap . 2 Find and tap Settings > Sound . 3 Mark the Vibrate when ringing checkbox. To select the notification sound 1 From your Home screen, tap . 2 Find and tap Settings > Sound > Notification sound .
To set the screen to vibrate on touch 1 Drag the status bar downwards, then tap > Sound . 2 Mark the Vibrate on touch checkbox. The screen now vibrates when you tap soft keys and certain applications. To adjust the idle time before the screen turns off 1 From your Home screen, tap .
To create a screen lock PIN 1 From your Home screen, tap . 2 Find and tap Settings > Security > Screen lock > PIN . 3 Enter a numeric PIN. 4 If necessary, tap to minimise the keyboard. 5 Tap Continue . 6 Re-enter and confirm your PIN. 7 If necessary, tap to minimise the keyboard.
To set the time manually 1 From your Home screen, tap . 2 Find and tap Settings > Date & time . 3 Unmark the Automatic date & time checkbox if it is marked. 4 Tap Set time . 5 Scroll up or down to adjust the hour and minute. 6 If applicable, scroll up to change AM to PM , or vice versa.
Typing text On-screen keyboard You can enter text with the on-screen QWERTY keyboard by tapping each letter individually, or you can use the Gesture input feature and slide your finger from letter to letter to form words.
To enter text using the Gesture input function 1 When you enter text using the on-screen keyboard, slide your finger from letter to letter to trace the word you want to write. 2 Lift up your finger when you’ve finished entering a word. A word is suggested based on the letters you have traced.
1 Close the application bar 2 Select all text 3 Cut text 4 Copy text 5 Paste text only appears when you have text saved on the clipboard. To select text 1 Enter some text, then double-tap the text. The word you tap gets highlighted by tabs on both sides.
Calling Making calls You can make a call by manually dialling a phone number, by tapping a number saved in your contacts list, or by tapping the phone number in your call log view. You can also use the smart dial feature to quickly find numbers from your contacts list and call logs.
To make an international call 1 From your Home screen, tap . 2 Find and tap Phone . 3 Touch and hold 0 until a “+” sign appears. 4 Enter the country code, area code (without the first 0) and phone number, then tap .
Ongoing calls 1 Open your contacts list 2 Turn on the loudspeaker during a call 3 Mute the microphone during a call 4 Enter numbers during a call 5 End a call To change the ear speaker volume during a call • Press the volume key up or down. To activate the screen during a call • Briefly press .
Forwarding calls You can forward calls, for example, to another phone number, or to an answering service. To forward calls 1 From your Home screen, tap . 2 Find and tap Settings > Call settings . 3 Tap Call forwarding and select an option. 4 Enter the number to which you want to forward calls, then tap Enable .
To activate or deactivate call waiting 1 From your Home screen, tap . 2 Find and tap Settings > Call settings > Additional settings . 3 To activate or deactivate call waiting, tap Call waiting . To answer a second call and put the ongoing call on hold • When you hear repeated beeps during a call, drag to the right.
To set up voicemail 1 From the Home screen, tap . 2 Find and tap Settings > Call settings > Voicemail > Voicemail settings > Voicemail number . 3 Enter your voicemail number. 4 Tap OK . To call your voicemail service 1 From your Home screen, tap .
Contacts Transferring contacts There are several ways to transfer contacts to your new device. Find out more about choosing a transfer method at www.sonymobile.
To import contacts using Bluetooth ® technology 1 Make sure you have the Bluetooth ® function turned on and that your device is set to visible. 2 When you are notified of an incoming file to your device, drag the status bar downwards and tap the notification to accept the file transfer.
Adding and editing contacts To add a contact 1 From your Home screen, tap , then tap . 2 Tap . 3 If you have synchronised your contacts with one or more accounts and you are adding a contact for the first time, you must select the account to which you want to add this contact.
Favourites and groups You can mark contacts as favourites so that you can get quick access to them from the Contacts application. You can also assign contacts to groups, to get quicker access to them from within the Contacts application. To mark or unmark a contact as a favourite 1 From the Home screen, tap , then tap .
To separate linked contacts 1 From your Home screen, tap , then tap . 2 Tap the linked contact that you want to edit, then tap . 3 Tap Unlink contact > Unlink . Backing up contacts You can use a memory card or a SIM card to back up contacts. To export all contacts to a memory card 1 From your Home screen, tap , then tap .
Messaging and chat Reading and sending messages The Messaging application shows your messages as conversations, which means that all messages to and from a particular person are grouped together. To send multimedia messages, you need the correct MMS settings on your device.
To reply to a message 1 From your Home screen, tap , then find and tap . 2 Tap the conversation containing the message. 3 Enter your reply and tap Send . To forward a message 1 From your Home screen, tap , then find and tap . 2 Tap the conversation containing the message that you want to forward.
Calling from a message To call a message sender 1 From your Home screen, tap , then find and tap . 2 Tap a conversation. 3 Tap the recipient name or number at the top of the screen, then select the number that you want to call from the list that appears.
1 Start a new chat or video call 2 Options 3 List of contacts To start an instant message or a video call 1 From your Home screen, tap . 2 Find and tap Hangouts . 3 Tap , then enter a contact name, email address, phone number or circle name and select the relevant entry from the suggested list.
Email Setting up email Use the email application in your device to send and receive email messages through your email accounts. You can have one or several email accounts at the same time, including corporate Microsoft Exchange ActiveSync accounts. To set up an email account 1 From your Home screen, tap .
3 Search for email messages 4 Access settings and options 5 List of email messages To download new email messages 1 From your Home screen, tap . 2 Find and tap Email . 3 If you are using several email accounts, tap and select the account that you want to check, then tap Inbox in the drop down menu.
Email preview pane A preview pane is available for viewing and reading your email messages in landscape orientation. Once activated, you can use it to view both the email message list and one selected email message at the same time. To activate the preview pane 1 From your Home screen, tap , then find and tap Email .
To delete an email message 1 In your email inbox, mark the checkbox for the message that you want to delete, then tap . 2 Tap Delete . In the email inbox view, you can also flick a message to the right to delete it. Email account settings To remove an email account from your device 1 From your Home screen, tap .
4 Access settings and options 5 List of email messages To learn more about Gmail™ • When the Gmail application is open, tap , then tap Help . 61 This is an Internet version of this publication.
Music Transferring music to your device There are different ways to get music from a computer to your device: • Connect the device and computer using a USB cable and drag and drop music files directly into the file manager application on the computer.
To play a song 1 From your Home screen, tap , then find and tap . 2 If the WALKMAN home screen is not displayed, tap . 3 Select a music category, for example, under Artists , Albums or Songs , then browse to the song that you want to open. 4 Tap a song to play it.
8 Collect links to music and related content that you and friends have shared using online services 9 Manage and edit your music using Music Unlimited channels 10 Open the "WALKMAN" music player application Sony Entertainment Network with Video Unlimited and Music Unlimited is not available in every market.
To create your own playlists 1 Open the WALKMAN home screen. 2 To add an artist, album or a song to a playlist, touch and hold the name of the artist or the title of the album or song. 3 In the menu that opens, tap Add to > Create new playlist . 4 Enter a name for the playlist and tap OK .
To manage music from your friends 1 Open the WALKMAN home screen, then tap Friends' music > Recent . 2 Tap an item to open it, then work on it as desired. 3 Tap to show that you "Like" the song on Facebook™ . If desired, add a comment in the comments field.
1 View TrackID options 2 View current music charts 3 View the search result history 4 Record and identify music The TrackID™ application and the TrackID™ service are not supported in all countries/regions, or by all networks and/or service providers in all areas.
Music Unlimited online service Music Unlimited is a subscription-based service that offers access to millions of songs over a mobile network or Wi-Fi ® connection. You can manage and edit your personal music library in the cloud from a variety of devices, or sync your playlists and music using a PC that runs the Windows ® operating system.
FM radio Listening to the radio The FM radio in your device works like any FM radio. For example, you can browse and listen to FM radio stations and save them as favourites. You must connect a wired headset or headphones to your device before you can use the radio.
To switch the radio sound to the speaker 1 When the radio is open, press . 2 Tap Play in speaker . To switch the sound back to the wired headset or headphones, press and tap Play in headphones . To identify a song on the FM radio using TrackID™ 1 While the song is playing on your device's FM radio, press , then select TrackID™ .
Camera Taking photos and recording videos 1 Zoom in or out 2 Main camera screen 3 Camera key – Activate the camera/Take photos/Record videos 4 View photos and videos 5 Take photos or record video cl.
To record a video using the camera key 1 Activate the camera. 2 Tap , and select . 3 If the video camera is not selected, tap . 4 To start recording a video, press the camera key. 5 To stop recording, press the camera key again. To record a video by tapping the screen 1 Activate the camera.
To take a photo using Smile Shutter™ 1 When the camera is open and Smile Shutter™ is turned on, point the camera at your subject. The camera selects which face to focus on. 2 The face selected appears inside a coloured frame and the photo is taken automatically.
AR effect You can apply AR (augmented reality) effects to your photos and make them more fun. This setting lets you integrate 3D scenes into your photos as you take them.
Geotagging Tag photos with details of where you took them. Touch capture Identify a focus area, and then touch the camera screen with your finger. The photo is taken as soon as you release your finger. Shutter sound Choose to turn on or turn off the shutter sound.
9 megapixel resolution with 16:9 aspect ratio. Suitable for photos you want to view on widescreen displays. 5MP 2592×1944(4:3) 5 megapixel resolution with 4:3 aspect ratio. Suitable for photos you want to view on non-widescreen displays or print in high resolution.
HDR Use the HDR (High Dynamic Range) setting to take a photo against strong back light or in conditions where the contrast is sharp. HDR compensates for the loss of detail and produces a picture that is representative of both dark and bright areas. This setting is only available in Manual capturing mode.
The photo or video opens for editing after you shoot it. Off The photo or video is saved after you shoot it, and no preview appears. Face registration You can register faces with the Camera application so that the viewfinder automatically focuses on these faces when they appear in the viewfinder.
Self-timer With the self-timer you can record a video without holding the device. Use it to record group videos where everyone can be in the video. You can also use the self-timer to avoid shaking the camera when recording videos. On (10 sec.) Set a 10-second delay from when you tap the camera screen until the video begins to record.
SteadyShot™ When recording a video, it can be difficult to hold the device steady. The stabiliser helps you by compensating for small movements of the hand. Microphone Select whether to pick up the surrounding sound when recording videos. Flash Use the flash light to record videos when lighting conditions are poor or when there is a backlight.
Photos and videos in Album Viewing photos and videos Use the Pictures tab in the Album application to view photos and play videos that you’ve taken with your camera, or to view similar content that you've saved to your device. All photos and videos are displayed in a chronologically ordered grid.
To watch a slideshow of your photos with music 1 When you are viewing a photo, tap the screen to display the toolbars, then tap > SensMe™ slideshow . 2 Select the music and theme that you want to use for the slideshow, then tap . The Album application analyses your photos and uses SensMe™ music data to play a slideshow.
To work with batches of photos or videos in Album 1 When viewing thumbnails of photos and videos in Album, tap , then tap Select items . 2 Tap the items that you want to work with. Selected items are indicated by a blue frame. 3 Use the tools in the toolbars to work with your selected items.
To apply special effects to a photo 1 When you are viewing a photo, tap the screen to display the toolbars, then tap . 2 If prompted, select Photo editor > Just once .
6 View your photos in globe mode 7 View photos and videos on Picasa™ 8 View photos and videos on Facebook™ 9 View all photos with faces 10 View photos using the Flickr™ online service 11 Scroll up or down to view content The PlayMemories online service is not available in all countries or regions.
3 Double tap to zoom in. Pinch to zoom out. Drag to view different parts of the map. 4 A group of photos and/or videos geotagged with the same location. 5 Thumbnails of the selected group of photos and/or videos. Tap an item to view it in full screen.
Videos Watching videos in the Movies application Use the Movies application to play movies and other video content that you’ve saved or downloaded to your device. The Movies application also helps you get poster art, plot summaries, genre info and director details for each movie.
To change settings in Movies 1 From your Home screen, tap , then find and tap Movies . 2 Tap > Settings , then change the settings as desired. To change the sound settings while a video is playing 1 While a video is playing, tap the screen to display the controls.
To delete a video 1 From your Home screen, tap , then find and tap Movies . 2 Tap All in the My Collection tab to browse to the video that you want to delete. 3 Touch and hold the video thumbnail, then tap Delete from the list that appears. 4 Tap Delete again to confirm.
Connectivity Sharing content with DLNA Certified™ devices You can view or play media content saved to your device on other devices such as, for example, a TV, or a computer.
To set up file sharing with other DLNA Certified™ devices 1 Connect your device to a Wi-Fi® network. 2 From your Home screen, tap , then find and tap . 3 Tap , then tap Media server . 4 To turn on the Share media function, drag the slider. appears in the status bar.
To view photos or videos from your device on a DMR device 1 Make sure that you have correctly set up the DMR device and that it is connected to the same Wi-Fi® network as your device. 2 From your Home screen, tap . 3 Find and tap Album . 4 Browse to and open the file that you want to view.
NFC detection area The location of the NFC detection area is not the same on all devices. When sharing data with another device using NFC, refer to the User guide of the other device for more information. To share a contact with another device using NFC 1 Make sure that both devices have the NFC function turned on, and that both screens are active.
To share a photo or video with another device using NFC 1 Make sure that both devices have the NFC function turned on, and that both screens are active. 2 To view photos and videos in your device, go to your Home screen, tap , then find and tap Album .
To turn on the Bluetooth ® function and make your device visible 1 Drag the status bar downwards, then tap . 2 Tap the on-off switch beside Bluetooth to turn on the Bluetooth ® function. 3 Tap Bluetooth . Your device and a list of available Bluetooth ® devices appear.
To connect your device to another Bluetooth ® device 1 If you are connecting to a Bluetooth ® device that requires you to first pair your device before connecting, follow the relevant steps to pair your device with that device. 2 Drag the status bar downwards, then tap .
Connecting your device to a computer Connect your device to a computer and start transferring pictures, music and other types of files. The easiest ways to connect are using a USB cable or Bluetooth ® wireless technology.
the computer. Media Go™ converts media files so that you can use them on your device. In order to use this feature, you need a Wi-Fi ® enabled device that supports Media transfer, for example, a computer running Microsoft ® Windows Vista ® or Windows ® 7.
To install PC Companion on a PC 1 Make sure the Install software checkbox under Settings > Xperia™ Connectivity > USB Connectivity is marked. 2 Connect your device to a PC using a USB cable. 3 Device : Tap Install . 4 Computer : The PC Companion installer starts automatically after a few seconds.
To transfer content using Sony™ Bridge for Mac 1 Using a USB cable, connect your device to an Apple ® Mac ® computer. 2 Computer : Open the Sony™ Bridge for Mac application. After a few moments, The Sony™ Bridge for Mac application detects your device.
To create a Smart Connect event 1 Start the Smart Connection application. If you are opening Smart Connect for the first time, tap OK to close the introduction screen. 2 Tap . 3 Give the event a name, then tap Create . 4 Under When , add either an accessory or a time interval, or both.
Travel and maps Using location services Location services allow applications such as Maps and the camera to use information from mobile and Wi-Fi® networks as well as Global Positioning System (GPS) information to determine your approximate location.
When you view a map, you use data traffic to get an Internet connection, and data is transferred to your device. So it's a good idea to save a map and make it available offline before you take a trip. This way, you can avoid high roaming costs. The Google Maps™ application requires the use of an Internet connection when used online.
Using data traffic when travelling When you travel outside of your home mobile network, you might need to access the Internet using mobile data traffic. In this case, you need to activate data roaming on your device. It is recommended to check the relevant data transmission charges in advance.
Calendar and alarm clock Calendar Use the Calendar application to manage your time schedule. If you have signed into and sychronised your device with one or several online accounts that include calend.
To zoom the calendar view • When the Week or the Day view is selected, pinch the screen to zoom in. Alarm and clock You can set one or several alarms and use any sound saved on your device as the alarm signal. The alarm does not sound if your device is turned off.
To turn on or off an alarm • Open the Alarm & clock application, then drag the slider next to the alarm to the on or off position. To delete an alarm 1 Open the Alarm & clock application, then touch and hold the alarm that you want to delete.
Support and maintenance Support for your device Use the Support application in your device to search a User guide, read troubleshooting guides, and find information about software updates and other product-related information. To access the Support application 1 From your Home screen, tap .
To download and install a system update 1 From your Home screen, tap . 2 Find and tap Update Center > System . 3 Select the desired system update, then tap . 4 When the download is finished, tap and follow the on-screen instructions to complete the installation.
To activate the my Xperia service 1 From your Home screen, tap . 2 Find and tap Settings > Security > MyXperia™ > Activate . 3 Mark the checkbox, then tap Accept . To verify that the my Xperia service can locate your device, go to myxperia.
Queue background data mode. Each mode works in a different way and controls several power consuming functions on your device. To view which applications use the most battery power 1 From your Home screen, tap . 2 Find and tap Settings > Power management > Battery usage .
To activate the Location-based Wi-Fi® feature 1 From your Home screen, tap . 2 Find and tap Settings > Power management . 3 Drag the slider beside Location-based Wi-Fi to the right.
To clear the cache memory for all applications 1 From your Home screen, tap . 2 Find and tap Settings > Storage . 3 Tap Cached data > OK . When you clear the cache memory, you don't lose any important information or settings. To transfer media files to the memory card 1 Make sure you have a memory card inserted in your device.
To back up your data using a computer 1 Make sure that the PC Companion application is installed on a PC or the Sony™ Bridge for Mac application is installed on an Apple ® Mac ® computer. 2 Connect your device to the computer using a USB cable. 3 Computer : Open the PC Companion application or the Sony™ Bridge for Mac application.
Restarting and resetting You can force your device to shut down in situations where it stops responding or won't restart normally. No settings or personal data get deleted. You can also reset your device to its original factory settings, with or without deleting all of your personal data.
Important information Important information leaflet Before you use your device, please read the Important information leaflet provided in the Setup guide in your device or in the box. To access the setup guide manually 1 From the Home screen, tap . 2 Tap Settings > Setup guide .
デバイスSony D5303/D5306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 D5303/D5306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 D5303/D5306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 D5303/D5306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 D5303/D5306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 D5303/D5306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 D5303/D5306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 D5303/D5306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 D5303/D5306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。
