1. សេចក្តីផ្តើម
This manual provides detailed instructions for the installation, operation, and maintenance of your Naifay Android Car Stereo, Model 2G+32G, designed specifically for Nissan Altima vehicles manufactured between 2008 and 2012. Please read this manual thoroughly before installation and use to ensure proper functionality and to maximize your user experience.
The Naifay Android Car Stereo enhances your driving experience with features such as a 9-inch touchscreen, wireless Apple CarPlay, wireless Android Auto, GPS navigation, Bluetooth 5.1, FM radio, and support for a backup camera.

Image 1.1: Naifay Android Car Stereo main unit with its user interface.
2. ព័ត៌មានសុវត្ថិភាព
- ការដំឡើងវិជ្ជាជីវៈត្រូវបានណែនាំ៖ Due to the complexity of vehicle wiring, professional installation is strongly recommended to prevent damage to the unit or your vehicle. Incorrect wiring can lead to malfunctions or permanent damage.
- ភាពឆបគ្នានៃរថយន្ត៖ This unit is compatible only with Nissan Altima models from 2008-2012 that have manual A/C controls និង do not have a premium sound system (e.g., JBL, BOSE) or a large factory navigation screen. Installing in incompatible vehicles may result in non-functionality or damage.
- ការផ្គត់ផ្គង់ថាមពល៖ Ensure the car radio operates on a 12V power supply. Voltages exceeding 12V can damage the unit.
- សុវត្ថិភាពក្នុងការបើកបរ៖ កុំដំណើរការអង្គភាពតាមរបៀបដែលរំខានអ្នកពីការបើកបរ។ តែងតែផ្តល់អាទិភាពដល់សុវត្ថិភាពផ្លូវ។
- សីតុណ្ហភាព៖ ជៀសវាងការដាក់អង្គភាពទៅសីតុណ្ហភាពខ្លាំង ឬពន្លឺព្រះអាទិត្យដោយផ្ទាល់សម្រាប់រយៈពេលដ៏យូរ។

Image 2.1: Visual guide for compatible and incompatible Nissan Altima dashboards.
3. ការដំឡើង & ការដំឡើង
3.1. មាតិកាកញ្ចប់
មុនពេលចាប់ផ្តើមដំឡើង សូមផ្ទៀងផ្ទាត់ថាសមាសធាតុទាំងអស់មានវត្តមាន៖
- Naifay Android Car Stereo Unit (9-inch screen)
- ខ្សែថាមពល
- ខ្សែ RCA
- ខ្សែយូអេសប៊ី ២ ដង
- ខ្សែបញ្ចូលកាមេរ៉ាខាងក្រោយ
- អង់តែន GPS
- ម៉ាស៊ីនថតអេអេសអេស
- សៀវភៅណែនាំអ្នកប្រើ (ឯកសារនេះ)

រូបភាព 3.1៖ ទំហំផលិតផល និងគ្រឿងបន្ថែម។
3.2. ការត្រួតពិនិត្យការដំឡើងជាមុន
- Confirm your Nissan Altima model year is between 2008 and 2012.
- Verify your vehicle has manual A/C controls. This unit is not compatible with automatic climate control systems.
- Ensure your vehicle does not have a factory-installed premium sound system (e.g., JBL, BOSE) or a large navigation screen, as these are not supported.
- ផ្តាច់ថ្មរបស់រថយន្ត មុនពេលចាប់ផ្តើមការងារអគ្គិសនី។
3.3. Wiring and Physical Installation
The unit comes with a wiring harness designed for plug-and-play installation in compatible Nissan Altima models. Refer to the wiring diagram provided with the unit and consult a professional if you are unsure about any connections.
- ការតភ្ជាប់ថាមពល៖ Connect the red and yellow wires of the power cable to the positive side of the vehicle's power supply (ACC and constant 12V). Connect the black wire to the negative ground.
- Amplifier Connection (if applicable): If your car has a power amplifier and you experience no sound, locate the amplifier's power cable and connect it to the 12V ACC cable of the car stereo.
- អង់តែនជីភីអេស៖ ដំឡើងអង់តែន GPS នៅក្នុងទីតាំងដែលមានពន្លឺច្បាស់ view នៃមេឃ ជាធម្មតានៅលើផ្ទាំងគ្រប់គ្រង ឬនៅក្រោមកញ្ចក់ខាងមុខ។
- កាមេរ៉ា AHD៖ Install the AHD backup camera at the rear of the vehicle. Route the camera cable to the head unit and connect it to the 'Reverse Input' port. Ensure the camera's power is connected to the reverse light circuit so it activates automatically when reversing.
- ខ្សែ USB៖ Route the USB cables to an accessible location, such as the glove compartment or center console, for connecting external devices.
- ការដំឡើង៖ Securely mount the car stereo unit into the dashboard opening using the provided frame and mounting hardware.
3.4. ការបើកថាមពលដំបូង
After installation, reconnect the vehicle's battery. The unit should power on automatically or when the ignition is turned on. Follow any on-screen prompts for initial setup, such as language selection and time zone.
4. សេចក្តីណែនាំប្រតិបត្តិការ
4.1. ចំណុចប្រទាក់អ្នកប្រើលើសview
The 9-inch HD 1080P touchscreen provides access to all functions. The main screen typically displays common applications and widgets. Swipe gestures and touch controls are used for navigation.
៥.៣. Apple CarPlay និង Android Auto ឥតខ្សែ
Integrate your smartphone wirelessly for navigation, calls, messages, and music. This feature allows for voice control and a familiar smartphone interface on your car stereo screen.
- ត្រូវប្រាកដថា Bluetooth ត្រូវបានបើកនៅលើស្មាតហ្វូន និងស្តេរ៉េអូរថយន្តរបស់អ្នក។
- Pair your smartphone with the car stereo via Bluetooth.
- Once paired, select the CarPlay or Android Auto icon on the stereo's screen. Your phone's interface will appear.
- For Android Auto, ensure the Android Auto app is installed on your Android phone.

Image 4.1: Wireless CarPlay and Android Auto in operation.
៣.៤. តំណភ្ជាប់កញ្ចក់
Mirror Link allows you to display your smartphone screen directly onto the car stereo. iOS devices support wireless connection, while Android devices support both wireless and wired connections.
- សម្រាប់ iOS៖ Connect via Wi-Fi hotspot.
- សម្រាប់ Android៖ Connect via Wi-Fi hotspot or USB cable.

Image 4.2: Mirror Link functionality displaying a phone screen on the stereo.
៦.៤. ការរុករក GPS
The unit features built-in GPS navigation. You can use pre-installed offline maps or connect to Wi-Fi for online navigation and real-time traffic updates.
- To download offline maps, navigate to the map application's menu and select the download option for your desired region.
- The unit is compatible with most navigation apps available on the Play Store, such as Sygic, Waze, and IGO.

Image 4.3: GPS Navigation and WiFi connectivity features.
4.5. ការតភ្ជាប់វ៉ាយហ្វាយ
Connect the car stereo to a Wi-Fi network or your phone's hotspot to access online features, download apps, stream media, and use online navigation.
- Go to 'Settings' on the car stereo.
- Select 'Wi-Fi' and turn it on.
- ជ្រើសរើសបណ្តាញដែលអ្នកចង់បានពីបញ្ជី ហើយបញ្ចូលពាក្យសម្ងាត់ប្រសិនបើចាំបាច់។
4.6. ប៊្លូធូស 5.1
Bluetooth 5.1 enables hands-free calling and wireless audio streaming from your smartphone.
- Enable Bluetooth on both your phone and the car stereo.
- On the car stereo, search for available devices and select your phone.
- បញ្ជាក់លេខកូដផ្គូផ្គងនៅលើឧបករណ៍ទាំងពីរ។
- Once connected, you can make/receive calls and play music through the car's speakers. The built-in noise-canceling microphone ensures clear call quality.
4.7. វិទ្យុ FM
Tune into local radio stations with the built-in FM receiver.
- Access the FM Radio application from the main menu.
- ប្រើមុខងារស្កេនដើម្បីស្វែងរកស្ថានីយ៍ដែលមាន។
- Save your favorite stations as presets for quick access.
៦.៨. ការគ្រប់គ្រងកង់ដៃចង្កូត (SWC)
The unit supports your vehicle's existing steering wheel controls, allowing you to manage audio and other functions without taking your hands off the wheel.
- Go to 'Settings' and find the 'Steering Wheel Control' or 'SWC' option.
- Follow the on-screen instructions to program each button on your steering wheel to the desired function on the stereo.
4.9. AHD Rear View កាមេរ៉ា
កាមេរ៉ា AHD ដែលភ្ជាប់មកជាមួយផ្តល់នូវរូបភាពច្បាស់ល្អ view នៃតំបន់នៅពីក្រោយយានយន្តរបស់អ្នកនៅពេលថយក្រោយ។
- When the vehicle is shifted into reverse gear, the car stereo screen will automatically display the camera feed.
- The camera offers a 170° viewមុំសម្រាប់ការមើលឃើញប្រសើរឡើង។

Image 4.4: Bluetooth, FM Radio, SWC, and Backup Camera features.
៦.៦. មុខងារបំបែកអេក្រង់
The split-screen feature allows you to run two applications simultaneously on the 9-inch display, such as navigation on one side and music on the other.
- To activate, open an application, then long-press the recent apps button or drag another app from the recent apps list to one side of the screen.

Image 4.5: Split screen mode displaying navigation and music simultaneously.
5. ការថែទាំ
5.1. ការសម្អាតអេក្រង់
ប្រើក្រណាត់ទន់ និងគ្មានជាតិសរសៃ ដើម្បីជូតអេក្រង់ប៉ះថ្នមៗ។ ចំពោះស្នាមប្រឡាក់រឹងរូសបន្តិច ឃampen the cloth with water or a screen-safe cleaner. Avoid harsh chemicals or abrasive materials that could damage the screen.
5.2. ការធ្វើបច្ចុប្បន្នភាពកម្មវិធី
ពិនិត្យអ្នកផលិតតាមកាលកំណត់ webគេហទំព័រ ឬការកំណត់របស់អង្គភាពសម្រាប់ការអាប់ដេតកម្មវិធីដែលមាន។ ការអាប់ដេតអាចធ្វើអោយប្រសើរឡើងនូវដំណើរការ បន្ថែមមុខងារថ្មីៗ និងជួសជុលកំហុស។ សូមអនុវត្តតាមការណែនាំដែលបានផ្តល់ជូនដោយប្រុងប្រយ័ត្ននៅពេលអនុវត្តការអាប់ដេត។
6. ការដោះស្រាយបញ្ហា
If you encounter issues with your Naifay Android Car Stereo, refer to the following common problems and solutions:
| បញ្ហា | មូលហេតុដែលអាចកើតមាន | ដំណោះស្រាយ |
|---|---|---|
| គ្មានអំណាច | ខ្សែភ្លើងមិនត្រឹមត្រូវ; ហ្វុយស៊ីបផ្ទុះ; ការតភ្ជាប់រលុង | Check power cable connections (red/yellow to 12V, black to ground). Inspect vehicle's fuse box and the unit's fuse. Ensure all connections are secure. |
| គ្មានសំឡេង | Volume too low; Mute activated; Incorrect speaker wiring; External amplifier មិនត្រូវបានបំពាក់ | Increase volume. Check mute settings. Verify speaker connections. If an external amplifier is present, ensure its power cable is connected to the stereo's 12V ACC output. |
| Wireless CarPlay/Android Auto disconnects or is unstable | Poor Bluetooth/Wi-Fi connection; Interference; Software glitch | Ensure phone is close to the unit. Restart both phone and stereo. Check for software updates. Ensure no other devices are causing interference. |
| សញ្ញា GPS បាត់បង់ ឬមិនត្រឹមត្រូវ | GPS antenna placement; Obstruction; Software issue | ត្រូវប្រាកដថាអង់តែន GPS មានចំណុចច្បាស់លាស់ view of the sky. Check antenna connection. Restart the unit. |
| កាមេរ៉ាបម្រុងទុកមិនបង្ហាញ | Incorrect wiring; Camera malfunction; Reverse signal not detected | Verify camera power and video input connections. Ensure the reverse trigger wire is correctly connected to the vehicle's reverse light circuit. |
If these solutions do not resolve the issue, please contact Naifay customer support for further assistance.
7. លក្ខណៈបច្ចេកទេស
- ប្រព័ន្ធប្រតិបត្តិការ៖ ប្រព័ន្ធប្រតិបត្តិការ Android 12
- ស៊ីភីយូ៖ ២-ស្នូល
- អង្គចងចាំ៖ RAM 2GB + ROM 32GB
- ទំហំអេក្រង់៖ ៤.៧៥ អ៊ីញ
- គុណភាពបង្ហាញ៖ 1080p HD
- ការតភ្ជាប់៖ Wireless, Bluetooth 5.1, USB, Wi-Fi
- លក្ខណៈពិសេស៖ Touchscreen, Wireless Apple CarPlay, Wireless Android Auto, Mirror Link, GPS Navigation, FM Radio, Steering Wheel Control (SWC), AHD Backup Camera Support, Split Screen
- របៀបបញ្ចេញអូឌីយ៉ូ៖ ស្តេរ៉េអូ
- ប្រភេទម៉ោន៖ ផ្ទាំងគ្រប់គ្រងការម៉ោន
- ទំហំផលិតផល៖ 10.5 x 1.57 x 8.66 អ៊ីញ
- ទំងន់ធាតុ៖ 2.94 ផោន
8. ការធានា និងការគាំទ្រ
Naifay is committed to providing excellent customer service and support for your product.
- ការធានា៖ This product includes a 12-month warranty from the date of purchase.
- ជំនួយបច្ចេកទេស៖ We offer lifetime after-sales consultation and technical support. Our support team is available for quick replies within 24 hours.
- គោលការណ៍ត្រឡប់មកវិញ៖ A 60-day no-worry return policy is available.
8.1. How to Contact Support
For any questions, installation guidance, or troubleshooting assistance, please contact Naifay customer service. You can typically find a 'Contact Seller' or 'Ask a question' option on the product's purchase page on Amazon.

Image 8.1: Guide on contacting customer support.





