IdeaCentre A540-24ICB and A540-24API Hardware Maintenance Manual
First Edition (July 2019) © Copyright Lenovo 2019. LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS35F-05925.
Contents About this manual . . . . . . . . . . . . iii . . 27 . . 27 Audio problems . . . . . . . . . . . . Network problems . . . . . . . . . . . Performance problems . . . . . . . . . Storage drive problems . . . . . . . . . CD or DVD problems . . . . . . . . . . Serial connector problems . . . . . . . . Software problems . . . . . . . . . . . Recovery . . . . . . . . . . . . . . . . Restore system files and settings to an earlier point . . . . . . . . . . . . . . . .
Chapter 7. Notices and trademarks . . . . . . . . . . . . . . .
About this manual This manual provides service and reference information for IdeaCentre® computers listed on the front cover. Use this manual along with the advanced diagnostic tests to troubleshoot problems. Important: This manual is intended only for trained service technicians who are familiar with IdeaCentre computers. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.
iv IdeaCentre A540-24ICB and A540-24API Hardware Maintenance Manual
Chapter 1. Important safety information General safety Follow these rules to ensure general safety: • Observe good housekeeping in the area of the machines during and after maintenance. • When lifting any heavy object: 1. Ensure you can stand safely without slipping. 2. Distribute the weight of the object equally between your feet. 3. Use a slow lifting force. Never move suddenly or twist when you attempt to lift. 4.
Electrical safety CAUTION: Electrical current from power, telephone, and communication cables can be hazardous. To avoid personal injury or equipment damage, disconnect the attached power cords, telecommunication systems, networks, and modems before you open the computer covers, unless instructed otherwise in the installation and configuration procedures. Observe the following rules when working on electrical equipment. Important: Use only approved tools and test equipment.
• Do not service the following parts with the power on when they are removed from their normal operating places in a machine: – Power supply units – Pumps – Blowers and fans – Motor generators and similar units. (This practice ensures correct grounding of the units.) • If an electrical accident occurs: – Use caution; do not become a victim yourself. – Switch off power. – Send another person to get medical aid.
8. Check that the power-supply cover fasteners (screws or rivets) have not been removed or tampered with. Handling electrostatic discharge-sensitive devices Any computer part containing transistors or integrated circuits (ICs) should be considered sensitive to electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects.
• Italian • Korean • Spanish DANGER Electrical current from power, telephone and communication cables is hazardous. To avoid a shock hazard: • Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration of this product during an electrical storm. • Connect all power cords to a properly wired and grounded electrical outlet. • Connect to properly wired outlets any equipment that will be attached to this product.
CAUTION: When laser products (such as CD-ROMs, DVD-ROM drives, fiber optic devices, or transmitters) are installed, note the following: • Do not remove the covers. Removing the covers of the laser product could result in exposure to hazardous laser radiation. There are no serviceable parts inside the device. • Use of controls or adjustments or performance of procedures other than those specified herein might result in hazardous radiation exposure.
Chapter 1.
≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.
PERIGO A corrente elétrica proveniente de cabos de alimentação, de telefone e de comunicações é perigosa. Para evitar risco de choque elétrico: • Não conecte nem desconecte nenhum cabo ou execute instalação, manutenção ou reconfiguração deste produto durante uma tempestade com raios. • Conecte todos os cabos de alimentação a tomadas elétricas corretamente instaladas e aterradas. • Todo equipamento que for conectado a este produto deve ser conectado a tomadas corretamente instaladas.
Quando produtos a laser (como unidades de CD-ROMs, unidades de DVD-ROM, dispositivos de fibra ótica ou transmissores) estiverem instalados, observe o seguinte: • Não remova as tampas. A remoção das tampas de um produto a laser pode resultar em exposição prejudicial à radiação de laser. Não existem peças que podem ser consertadas no interior do dispositivo.
Chapter 1.
2 1 12 IdeaCentre A540-24ICB and A540-24API Hardware Maintenance Manual
Chapter 1.
2 1 DANGER Le courant électrique provenant de l'alimentation, du téléphone et des câbles de transmission peut présenter un danger. Pour éviter tout risque de choc électrique : • Ne manipulez aucun câble et n'effectuez aucune opération d'installation, d'entretien ou de reconfiguration de ce produit au cours d'un orage. • Branchez tous les cordons d'alimentation sur un socle de prise de courant correctement câblé et mis à la terre.
Connexion Déconnexion 1. Mettez les unités HORS TENSION. 1. Mettez les unités HORS TENSION. 2. Commencez par brancher tous les cordons sur les unités. 2. Débranchez les cordons d'alimentation des prises. 3. Branchez les câbles d'interface sur des connecteurs. 4. Débranchez tous les câbles des unités. 3. Débranchez les câbles d'interface des connecteurs. 4. Branchez les cordons d'alimentation sur des prises. 5. Mettez les unités SOUS TENSION.
≥18 kg (37 lb) ≥32 kg (70.5 lb) ≥55 kg (121.2 lb) ATTENTION: Soulevez la machine avec précaution. ATTENTION: L'interrupteur de contrôle d'alimentation de l'unité et l'interrupteur dubloc d'alimentation ne coupent pas le courant électrique alimentantl'unité. En outre, le système peut être équipé de plusieurs cordonsd'alimentation. Pour mettre l'unité hors tension, vous devez déconnectertous les cordons de la source d'alimentation.
• Die Verbindung zu den angeschlossenen Netzkabeln, Telekommunikationssystemen, Netzwerken und Modems ist vor dem Öffnen des Gehäuses zu unterbrechen, sofern in den Installations- und Konfigurationsprozeduren keine anders lautenden Anweisungen enthalten sind. • Zum Installieren, Transportieren und Öffnen der Abdeckungen des Computers oder der angeschlossenen Einheiten die Kabel gemäß der folgenden Tabelle anschließen und abziehen.
Laserstrahlung bei geöffneter Verkleidung. Nicht in den Strahl blicken. Keine Lupen oder Spiegel verwenden. Strahlungsbereich meiden. ≥18 kg ≥32 kg ≥55 kg ACHTUNG: Arbeitsschutzrichtlinien beim Anheben der Maschine beachten. ACHTUNG: Mit dem Netzschalter an der Einheit und am Netzteil wird die Stromversorgung für die Einheit nicht unterbrochen. Die Einheit kann auch mit mehreren Netzkabeln ausgestattet sein.
Chapter 1.
2 1 PERICOLO La corrente elettrica proveniente dai cavi di alimentazione, del telefono e di comunicazione può essere pericolosa.
• Non collegare o scollegare qualsiasi cavo oppure effettuare l'installazione, la manutenzione o la riconfigurazione del prodotto durante un temporale. • Collegare tutti i fili elettrici a una presa di alimentazione correttamente cablata e dotata di messa a terra. • Collegare alle prese elettriche appropriate tutte le apparecchiature che verranno utilizzate per questo prodotto. • Se possibile, utilizzare solo una mano per collegare o scollegare i cavi di segnale.
• Non rimuovere gli sportelli. L'apertura di un'unità laser può determinare l'esposizione a radiazioni laser pericolose. All'interno dell'unità non vi sono parti su cui effettuare l'assistenza tecnica. • L'utilizzo di controlli, regolazioni o l'esecuzione di procedure non descritti nel presente manuale possono provocare l'esposizione a radiazioni pericolose. PERICOLO Alcune unità laser contengono un diodo laser di Classe 3A o Classe 3B.
Chapter 1.
2 1 PELIGRO La corriente eléctrica procedente de cables de alimentación, teléfonos y cables de comunicación puede ser peligrosa. Para evitar el riesgo de descarga eléctrica: • No conecte ni desconecte los cables ni realice ninguna tarea de instalación, mantenimiento o reconfiguración de este producto durante una tormenta eléctrica. • Conecte todos los cables de alimentación a tomas de corriente debidamente cableadas y conectadas a tierra.
• No encienda nunca un equipo cuando hay señales de fuego, agua o daños estructurales. • Desconecte los cables de alimentación, los sistemas de telecomunicaciones, las redes y los módems conectados antes de abrir las cubiertas de los dispositivos, a menos que se indique lo contrario en los procedimientos de instalación y configuración. • Conecte y desconecte los cables, como se describe en la tabla siguiente, cuando instale, mueva o abra las cubiertas de este producto o de los dispositivos conectados.
Algunos productos láser tienen incorporado un diodo láser de clase 3A o clase 3B. Tenga en cuenta lo siguiente: Cuando se abre, queda expuesto a radiación láser. No mire directamente al rayo láser, ni siquiera con instrumentos ópticos, y evite exponerse directamente al rayo láser. ≥18 kg ≥32 kg ≥55 kg PRECAUCIÓN: Adopte procedimientos seguros al levantar el equipo.
Chapter 2. Important service information Strategy for replacing FRU Before replacing parts: Ensure that all software fixes, drivers, and UEFI BIOS downloads are installed before you replace any FRU listed in this manual. After a system board is replaced, ensure that the latest UEFI BIOS is loaded to the system board before you complete the service action. To download and install software fixes, drivers, and UEFI BIOS, go to https://support.lenovo.com and follow the instructions on the screen.
codes. If no error code is displayed, see whether the error symptom is listed in the “Symptom-to-FRU Index” section. Strategy for replacing FRU for CTO, special-bid, and standard models This topic provides information about the model types and FRU identification. Product definition This topic introduces different model types and how to identify each type.
Chapter 3. Product overview Front 1. Integrated camera activity indicator 2. Integrated microphones (2) 3. Integrated camera* 4. Infrared camera* 5. Screen 6. Wireless charging pad** 7. Internal speakers 8. Wireless charging indicator** * Either an integrated camera or an infrared camera is provided on your computer.
Rear 1. PC/Monitor mode switcher 2. HDMI 1.4 in connector 3. Ethernet connector 4. HDMI 1.4 out connector 5. USB 2.0 connectors (2) 6. USB 3.1 connector Gen 1/Gen 2* 7. 3 in 1 SD card slot 8. USB 3.1 connectors Gen 1/Gen 2* (2) 9. Combo audio jack 10. Power adapter connector 11.
Bottom 1. Storage drive door* 2. Internal speakers (2) * for selected models Chapter 3.
32 IdeaCentre A540-24ICB and A540-24API Hardware Maintenance Manual
Chapter 4. Service checkout and symptom-to-FRU index This chapter provides information about general service checkout and symptom-to-FRU index. Service checkout Attention: The drives in the computer you are servicing might have been rearranged or the drive startup sequence changed. Be extremely careful during write operations such as copying, saving, or formatting. Data or programs can be overwritten if you select an incorrect drive.
– If it has been working, what changes were made prior to its failing? – Is this the original reported failure? • Diagnostics version – Type and version level • Hardware configuration – Print (print screen) configuration currently in use – BIOS level • Operating system software – Type and version level Notes: To eliminate confusion, identical systems are considered identical only if they: 1. Are the exact machine type and models 2. Have the same BIOS level 3.
Error FRU/Action The boot sector on the startup drive is corrupted. The drive must be formatted. Do the following: 1. Attempt to back up the data on the failing hard disk drive. 2. Using the operating system programs, format the hard disk drive. The drive is defective. Replace the hard disk drive. Power supply problems If you suspect a power problem, use the following procedures. Check/Verify FRU/Action Check the following for proper installation.
POST error codes Each time you turn on the system, it performs a series of tests that check the operation of the system and some options. This series of tests are called the Power-On Self-Test, or POST. POST checks the following operations: • Some basic system-board operations • Memory operation • Video operation • Whether the boot drive is working If the POST detects a problem, an error message appears on the screen. A single problem might cause several error messages to appear.
8998 Not enough shadow RAM resources for OPTION ROM, not all devices initialized. Suggest to remove some add-on cards, or change to UEFI mode in BIOS setup. This error message is displayed when the shadow RAM resources for option ROM are insufficient. If the legacy option ROM is insufficient, remove some add-in cards. For the system that supports UEFI, set UEFI as the first priority or disable CSM in BIOS setup. 8999 Not enough PCIe/PCI MMIO resources. Currently only one video card is enabled.
Message/Symptom Diskette drive in-use light remains on or does not light when drive is active. FRU/Action 1. Diskette Drive 2. System Board 3. Diskette Drive Cable Blank screen except for flashing cursor. 1. System Board 2. Primary Hard Disk Drive 3. Hard Disk Drive Cable Incorrect memory size during POST 1. Run the Memory tests. 2. Memory Module 3. System Board "Insert a Diskette" icon appears with a known-good diagnostics diskette in the first 3.5-inch diskette drive. 1. System Board 2.
Message/Symptom RPL computer does not RPL from server FRU/Action 1. Check the startup sequence. 2. Check the network adapter LED status. Serial or parallel connector device failure (system board connector) 1. External Device Self-Test OK? 2. External Device 3. Cable 4. System Board Serial or parallel connector device failure (adapter connector) 1. External Device Self-Test OK? 2. External Device 3. Cable 4. Alternate Adapter 5. System Board Some or all keys on the keyboard do not work 1. Keyboard 2.
40 IdeaCentre A540-24ICB and A540-24API Hardware Maintenance Manual
Chapter 5. Troubleshooting and recovery This chapter provides solutions to resolve the computer problems. Use the basic procedure as a starting point for resolving computer problems. Basic procedure for resolving computer problems Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. 1. Check that: a. The cables for all connected devices are connected correctly and securely. b. All components have been reassembled correctly. c.
Startup problems Problem Solution • Ensure that the power cord is correctly connected to the rear of the computer and to a working electrical outlet. The computer does not start up when you press the power button. • If the computer has a secondary power switch on the rear of the computer, ensure that it is switched on. • The power indicator on the front of the computer is on. • The computer voltage matches the voltage available at the electrical outlet for your country or region.
Screen problems Problem Solution • The computer voltage matches the voltage available at the electrical outlet for your country or region. • Press a key to exit the screen saver. The screen goes blank while the computer is on. • Press the power button to resume the computer from sleep or hibernation mode. • The brightness and contrast is set correctly. • The screen goes blank when some of the programs start, install the device drivers for the programs.
Audio problems Problem Solution • When using powered external speakers that have an On/Off control, ensure that: – The On/Off control is set to the On position. – The speaker power cable is connected to a properly grounded, functional ac electrical outlet. • If the external speakers have a volume control, ensure that the volume is not set too low. • Click the volume icon in the Windows notification area on the taskbar. Check the speaker and volume settings.
Network problems Note: The Wi-Fi and Bluetooth features are optional. Problem Solution • Connect the cable from the Ethernet connector to the RJ45 connector of the hub. • Enable the Ethernet LAN feature in UEFI BIOS. • Enable the Ethernet LAN adapter. 1. Go to Control Panel and view by large icons or small icons. 2. Click Network and Sharing Center ➙ Change adapter settings. The computer cannot connect to an Ethernet LAN. 3. Right-click the Ethernet LAN adapter icon and click Enable.
Problem Solution • Enable the Bluetooth feature in UEFI BIOS. • Enable all Bluetooth devices. 1. Open the Start context menu. 2. Click Device Manager. Type the administrator password or provide confirmation if prompted. 3. Expand Bluetooth to display all Bluetooth devices. Right-click each Bluetooth device, and then click Enable device. The Bluetooth feature does not work. 4. Expand Network adapters to display all network devices. Right-click each Bluetooth device, and then click Enable device.
Performance problems Problem Solution Note: Depending on the volume of the storage drives and amount of data stored on the storage drives, the disk-defragmentation process might take up to several hours. 1. Close any open programs and windows. 2. Open the Start menu. Excessive fragmented files exist on the storage drives. 3. Click Windows System ➙ File Explorer ➙ This PC. 4. Right-click your C drive and then click Properties. 5. Click the Tools tab. 6. Click Optimize.
Storage drive problems Problem Solution • Ensure that the signal cables and power cables for all the storage drives are connected correctly. • Ensure that the computer is configured correctly to support the storage drives. Some or all storage drives are missing from the BIOS menu. – If the computer is installed with SATA storage drives, ensure that the SATA storage drive enablement module (one to five storage drives) is installed.
Problem Solution The playback is slow or choppy. • Disable any background programs, such as AntiVirus or Desktop Themes. • Ensure that video resolution is less than 1152 x 864 pixels. A message indicating invalid disc or no disc found is displayed. • Ensure that the disc is in the drive with the shiny side of the disc facing down. • Ensure that video resolution is less than 1152 x 864 pixels. • Ensure that the DVD or CD is inserted into an appropriate optical drive.
Restore system files and settings to an earlier point 1. Go to Control Panel and view by large icons or small icons. 2. Click Recovery ➙ Open System Restore. Then, follow the on-screen instructions. Restore your files from a backup Note: If you use the File History tool to restore your files from a backup, ensure that you backed up your data earlier with the tool. 1. Go to Control Panel and view by large icons or small icons. 2. Click File History ➙ Restore personal files.
Create a recovery USB drive Attention: The creation process deletes anything stored on the USB drive. To avoid data loss, make a backup copy of all the data that you want to keep. 1. Ensure that your computer is connected to ac power. 2. Prepare a USB drive with at least 16 GB of storage capacity. The actual USB capacity required depends on the size of the recovery image. 3. Connect the prepared USB drive to the computer. 4. Type recovery in the search box. Then, click Create a recovery drive. 5.
3. Follow the on-screen instructions.
Chapter 6. Hardware removal and installation This chapter provides instructions on how to remove and install hardware for your computer. Handling static-sensitive devices Do not open the static-protective package containing the new part until the defective part has been removed and you are ready to install the new part. Static electricity, although harmless to you, can seriously damage computer components and options.
Note: The silicone grease can be applied to the surfaces of the microprocessor and heat sink to eliminate air gaps. The hexagonal socket is used to pick up the antenna connectors. Major FRU and CRU Your computer contains the following types of CRU and FRU: • Self-service CRU: Refer to parts that can be installed or replaced easily by customer themselves or by trained service technicians at an additional cost.
Number Description Self-service CRU Optional-service CRU 11 Computer upper cover No No 12 Storage drive Yes No 13 Storage drive bracket Yes No 14 Storage drive metal shield No No 15 Computer back cover No No 16 Camera module No No 17 Panel housing No No 18 System board frame No No 19 Wi-Fi card cover No No 20 Heat sink No No 21 System fan No No 22 Wi-Fi antennas (2) No No 23 LCD panel No No 24 Speakers No No 25 Memory module No No 26 M.
System board 1 GPU 2 Microprocessor socket 3 Converter 4 Integrated camera and microphone module connector 5 M.2 Wi-Fi card slot 6 Memory slot 7 Card reader connector 8 USB 3.1 connector Gen 1/Gen 2* (2) 9 Audio connector 10 CMOS battery 11 M.2 solid-state drive slot 12 USB 3.1 connector Gen 1/Gen 2* 13 USB 2.0 connectors (2) 14 HDMI 1.4 out connector 15 Ethernet connector 16 HDMI 1.
External options You can connect external options to your computer, such as external speakers, a printer, or a scanner. For some external options, you must install additional software in addition to making the physical connection. When installing an external option, see Chapter 3 “Product overview” on page 29 to identify the required connector. Then, use the instructions that come with the option to help you make the connection and install any required software or device drivers.
5. Install the new hinge cover. 6. Reconnect the external cables and power cords to the corresponding connectors on the computer. 7. Position the computer to see the front side of the computer. Computer back cover Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Before you open the computer back cover, turn off the computer and wait several minutes until the computer is cool. Replacement procedure 1. Remove the hinge cover.
3. Remove the screws. 4. Unplug the connectors. Chapter 6.
5. Detach the computer chassis from the computer back cover. 6. Remove the computer back cover.
7. Install the new computer back cover. 8. Attach the computer chassis to the computer back cover. Chapter 6.
9. Connect the connectors. 10. Secure the computer back cover with the screws. 11. Place the computer in an upright position. 12. Reinstall the hinge cover. System board frame Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions.
Before you open the system board frame, turn off the computer and wait several minutes until the computer is cool. Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. 2. Remove the computer back cover. See “Computer back cover” on page 58. 3. Remove the screws. 4. Remove the system board frame. Chapter 6.
5. Install the new system board frame. 6. Secure the system board frame with the screws. 7. Reinstall the removed parts. Memory module Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Attention: Do not touch the contact edge of the memory module. Otherwise, the memory module might get damaged.
Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. 2. Remove the computer back cover. See “Computer back cover” on page 58. 3. Remove the system board frame. See “System board frame” on page 62. 4. Disengage the latches. 5. Remove the memory module. Chapter 6.
6. Install the new memory module. 7. Secure the memory module with the latches. 8. Reinstall the removed parts. System fan Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. The system fan might be very hot. Before you open the hinge cover, turn off the computer and wait several minutes until the computer is cool.
Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. 2. Remove the computer back cover. See “Computer back cover” on page 58. 3. Remove the system board frame. See “System board frame” on page 62. 4. Remove the system fan connector from the system board. 5. Remove the screws. Chapter 6.
6. Remove the system fan. 7. Install the new system fan.
8. Secure the system fan with the screws. 9. Connect the system fan connector to the system board. 10. Reinstall the removed parts. Heat sink Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. The heat sink might be very hot. Before you open the hinge cover, turn off the computer and wait several minutes until the computer is cool. Chapter 6.
Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. 2. Remove the computer back cover. See “Computer back cover” on page 58. 3. Remove the system board frame. See “System board frame” on page 62. 4. Remove the system fan. See “System fan” on page 66. 5. Remove the screws. Notes: • Carefully remove the screws from the system board to avoid any possible damage to the system board. The screws cannot be removed from the heat sink.
7. Install the new heat sink. 8. Secure the heat sink with the screws. 9. Reinstall the removed parts. Wi-Fi card Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. 2. Remove the computer back cover. See “Computer back cover” on page 58. 3. Remove the system board frame. See “System board frame” on page 62. Chapter 6.
4. Remove the screw. 5. Disconnect the Wi-Fi antenna cables from the Wi-Fi card.
6. Remove the Wi-Fi card. 7. Install the new Wi-Fi card. Chapter 6.
8. Connect the Wi-Fi antenna cables to the Wi-Fi card. 9. Secure the Wi-Fi card with the screw. 10. Reinstall the removed parts. M.2 SSD Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. 2. Remove the computer back cover. See “Computer back cover” on page 58. 3. Remove the system board frame. See “System board frame” on page 62.
4. Remove the thermal pad from the M.2 SSD. 5. Remove the screw. Chapter 6.
6. Remove the M.2 SSD. 7. Install the new M.2 SSD.
8. Secure the M.2 SSD with the screw. 9. Install the thermal pad to the M.2 SSD. 10. Reinstall the removed parts. Chapter 6.
Microprocessor Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Avoid contact with hot components inside the computer. During operation, some components become hot enough to burn the skin. Before you open the computer cover, turn off the computer, disconnect power, and wait approximately 10 minutes for the components to cool. The heat-sink-and-fan assembly and microprocessor might be very hot.
6. Slightly push the lever to unlock the microprocessor retainer. 7. Carefully remove the microprocessor. Chapter 6.
8. Install the new microprocessor. 9. Slightly pull the lever down to lock the microprocessor retainer. 10. Reinstall the removed parts.
System board Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Avoid contact with hot components inside the computer. During operation, some components become hot enough to burn the skin. Before you open the computer cover, turn off the computer, disconnect power, and wait approximately 10 minutes for the components to cool. The heat-sink-and-fan assembly and microprocessor might be very hot.
5. Record the cable routing and cable connections, and then disconnect all cables from the system board. See “System board” on page 56. 6. Remove the screws that secure the system board. 7. Carefully remove the system board. Note: Carefully handle the system board by its edges. 8. Install the new system board by aligning the five screw holes in the new system board with the corresponding mounting studs.
9. Connect the cable connectors to the system board. See “System board” on page 56. 10. Reinstall the removed parts one by one in the reversed sequence. Speakers Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. 2. Remove the computer back cover. See “Computer back cover” on page 58. 3. Remove the system board frame.
4. Disconnect the speakers cable from the system board. 5. Remove the screws.
6. Remove the speakers. 7. Install the new speakers. Chapter 6.
8. Secure the speakers with screws. 9. Connect the speakers cable to the system board. 10. Reinstall the removed parts. Storage drive Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Attention: The internal storage drive is sensitive. Inappropriate handling might cause damage and permanent loss of data.
• Replace the internal storage drive only for upgrade or repair. The internal storage drive is not designed for frequent changes or replacement. • Before replacing the internal storage drive, make a backup copy of all the data that you want to keep. • Do not touch the contact edge of the internal storage drive. Otherwise the internal storage drive might get damaged. • Do not apply pressure to the internal storage drive. • Do not make the internal storage drive subject to physical shocks or vibration.
5. Remove the storage drive from the bracket. 6. Remove the screws that secure the storage drive cable connector.
7. Disconnect the storage drive cable. 8. Remove the screws that secure the storage drive metal shield. Chapter 6.
9. Remove the storage drive metal shield. 10. Install the storage drive metal shield.
11. Secure the storage drive metal shield with the screws. 12. Connect the storage drive cable. Chapter 6.
13. Secure the storage drive cable connector with the screws. 14. Install the new storage drive to the bracket.
15. Insert the storage drive in the storage drive door. 16. Lock the storage drive door. 17. Reinstall the removed parts. LCD panel Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. 2. Remove the computer back cover. See “Computer back cover” on page 58. Chapter 6.
3. Remove the system board frame. See “System board frame” on page 62. 4. Remove the memory module. See “Memory module” on page 64. 5. Remove the system fan. See “System fan” on page 66. 6. Remove the heat sink. See “Heat sink” on page 69. 7. Remove the Wi-Fi card. See “Wi-Fi card” on page 71. 8. Remove the M.2 SSD. See “M.2 SSD” on page 74. 9. Remove the microprocessor. See “Microprocessor” on page 78. 10. Remove the system board. See “System board” on page 81. 11. Remove the storage drive.
14. Remove the screws. 15. Remove the middle frame. Chapter 6.
16. Remove the screws from the LCD panel. 17. Disconnect the cables from the LCD panel.
18. Connect the cables to the new LCD panel. 19. Secure the LCD panel with the screws. Chapter 6.
20. Install the middle frame. 21. Secure the middle frame with the screws.
22. Install the panel housing. 23. Secure the panel housing with the screws. 24. Reinstall the removed parts. Camera module Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. 2. Remove the computer back cover. See “Computer back cover” on page 58. Chapter 6.
3. Remove the system board frame. See “System board frame” on page 62. 4. Remove the memory module. See “Memory module” on page 64. 5. Remove the system fan. See “System fan” on page 66. 6. Remove the heat sink. See “Heat sink” on page 69. 7. Remove the Wi-Fi card. See “Wi-Fi card” on page 71. 8. Remove the M.2 SSD. See “M.2 SSD” on page 74. 9. Remove the microprocessor. See “Microprocessor” on page 78. 10. Remove the system board. See “System board” on page 81. 11. Remove the storage drive.
15. Remove the screws from the metal shield of camera module. 16. Remove the screws from the camera module. Chapter 6.
17. Remove the camera module. 18. Secure the metal shield of the camera module with the screws.
19. Secure the new camera module with the screws. 20. Insert the camera module in the panel housing. Chapter 6.
21. Secure the camera module in the panel housing with the screws. 22. Reinstall the removed parts. Computer upper cover Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Before you open the computer upper cover, turn off the computer and wait several minutes until the computer is cool. Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. 2. Detach the computer chassis from the computer back cover.
3. Remove the rubber feet. 4. Remove the screws. Chapter 6.
5. Remove the computer upper cover. 6. Install the new computer upper cover.
7. Secure the computer upper cover with screws. 8. Install the rubber feet. 9. Attach the computer chassis to the computer back cover. See “Computer back cover” on page 58. 10. Reinstall the hinge cover. Power switch board Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. Chapter 6.
2. Remove the computer upper cover. See “Computer upper cover” on page 104. 3. Remove the screws. 4. Remove the power switch board.
5. Install the new power switch board. 6. Secure the power switch board with screws. 7. Reinstall the removed parts. Subwoofer Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. 2. Remove the computer upper cover. See “Computer upper cover” on page 104. Chapter 6.
3. Disconnect the subwoofer cables. 4. Remove the screws that secure the subwoofer.
5. Remove the subwoofer. 6. Install the new subwoofer. Chapter 6.
7. Secure the subwoofer with the screws. 8. Connect the subwoofer cables. 9. Reinstall the removed parts. Wireless charging module Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. 2. Remove the computer upper cover. See “Computer upper cover” on page 104. 3. Remove the speakers. See “Subwoofer” on page 109.
4. Remove the screws. 5. Turn the wireless charging module. Chapter 6.
6. Disconnect the cable connectors from the wireless charging module. 7. Remove the wireless charging LED.
8. Install the new wireless charging LED. 9. Connect the cable connectors to the wireless charging module. Chapter 6.
10. Install the new wireless charging module. 11. Secure the wireless charging module with the screws. 12. Reinstall the removed parts. DC-in board Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. 2. Remove the computer upper cover. See “Computer upper cover” on page 104.
3. Disconnect all the cable connectors from the DC-in board. 4. Remove the screws. 5. Remove the DC-in board. Chapter 6.
6. Install the new DC-in board. 7. Secure the DC-in board with the screws. 8. Reconnect the cable connectors to the DC-in board. 9. Reinstall the removed parts. System stand Prerequisite Before you start, read Chapter 2 “Important service information” on page 27 and print the following instructions. Replacement procedure 1. Remove the hinge cover. See “Hinge cover” on page 57. 2. Remove the computer upper cover. See “Computer upper cover” on page 104.
3. Remove the power switch board. See “Power switch board” on page 107. 4. Remove the screws. 5. Remove the system stand. Chapter 6.
6. Install the new system stand. 7. Secure the system stand with the screws. 8. Reinstall the removed parts.
Chapter 7. Notices and trademarks Notices Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult your local Lenovo representative for information on the products and services currently available in your area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that Lenovo product, program, or service may be used.
on development-level systems and there is no guarantee that these measurements will be the same on generally available systems. Furthermore, some measurements may have been estimated through extrapolation. Actual results may vary. Users of this document should verify the applicable data for their specific environment. This document is copyrighted by Lenovo and is not covered by any open source license, including any Linux agreement(s) which may accompany software included with this product.
