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Emphasizes reading CAUTION and DANGER sections before proceeding with instructions.
Follows rules for general safety, keeping areas clear, lifting objects, and avoiding hazards.
Warns about electrical hazards from cables and outlines precautions for working with electricity.
Assists in identifying potential hazards posed by products and outlines a checklist for inspection.
Explains ESD damage and protection methods, including grounding and protective packaging.
Details the importance of electrical grounding for operator safety and correct system function.
Provides safety notices, including DANGER warnings about electrical hazards and shock prevention.
Lists physical specifications of the computer, including environment and electrical input details.
Addresses general error messages and provides a procedure to determine the cause of problems.
Describes how to launch the Lenovo BIOS Setup Utility program using the F1 key.
Explains how to navigate and modify system configuration options within the BIOS utility.
Details how to set, change, or delete Administrator and Power-On passwords for security.
Explains the purpose and procedures for setting, changing, or deleting an Administrator password.
Describes how to set, change, or delete a Power-On password to restrict system startup.
Details how to enable or disable various devices like USB, SATA, Audio, and Network controllers.
Explains how to temporarily select a startup device or permanently change the boot sequence.
Lists causes and actions for hard disk drive boot errors, including configuration and replacement.
Provides procedures for diagnosing and resolving power supply issues, checking connections and components.
Lists and explains Power-On Self-Test (POST) error messages and their corresponding actions.
Outlines a procedure for diagnosing problems when the cause is not immediately apparent.
Lists essential steps before starting any hardware disassembly, including powering off and unplugging.
Provides step-by-step instructions for replacing the keyboard and mouse components.
Details the procedure for replacing the power cord and power adapter of the computer.
Explains how to safely remove the base cover of the computer for access to internal components.
Provides step-by-step instructions for removing and replacing the computer's hard disk drive.
Details the process of removing and installing a memory module (RAM) in the computer.
Outlines the steps to remove and replace the computer's system fan.
Describes how to remove and install the heat-sink, including thermal grease application.
Provides instructions for removing and replacing the computer's built-in speaker system.
Details the comprehensive procedure for removing and installing the computer's motherboard.
Explains the steps to remove the hinge assembly from the computer chassis.
Provides instructions on how to remove the rear cover of the computer for access.
Details the procedure for removing and replacing the computer's built-in camera.
Outlines the steps to remove and install the LED panel of the computer.
Provides instructions for removing and installing the transform board.
Details the procedure for removing and installing the Wi-Fi card.
Explains how to remove and install the power switch board.
Provides instructions for removing and installing the NFC module.
Lists Field Replaceable Units (FRUs) for the A540 Mainboard, including part numbers.
Lists Field Replaceable Units (FRUs) for A540 RAM modules, including part numbers.
Lists Field Replaceable Units (FRUs) for A540 Hard Disk Drives, including part numbers.
Lists Field Replaceable Units (FRUs) for A540 Adapters, including part numbers.
Lists Field Replaceable Units (FRUs) for A540 Power Cords, including part numbers.
Lists Field Replaceable Units (FRUs) for A540 Keyboards and Mice, including part numbers.
Lists Field Replaceable Units (FRUs) for A540 Thermal components, including part numbers.
Lists Field Replaceable Units (FRUs) for A540 Cables, including part numbers.
Lists Field Replaceable Units (FRUs) for the A740 Mainboard, including part numbers.
Lists Field Replaceable Units (FRUs) for A740 RAM modules, including part numbers.
Lists Field Replaceable Units (FRUs) for A740 Hard Disk Drives, including part numbers.
Provides supplementary information useful for service representatives.
Explains how power management reduces power consumption of computer components.
Describes ACPI BIOS system allowing OS control of power management features.
Details features like Wake Up on Alarm and Wake Up on LAN for automatic computer startup.
Emphasizes reading CAUTION and DANGER sections before proceeding with instructions.
Follows rules for general safety, keeping areas clear, lifting objects, and avoiding hazards.
Warns about electrical hazards from cables and outlines precautions for working with electricity.
Assists in identifying potential hazards posed by products and outlines a checklist for inspection.
Explains ESD damage and protection methods, including grounding and protective packaging.
Details the importance of electrical grounding for operator safety and correct system function.
Provides safety notices, including DANGER warnings about electrical hazards and shock prevention.
Lists physical specifications of the computer, including environment and electrical input details.
Addresses general error messages and provides a procedure to determine the cause of problems.
Describes how to launch the Lenovo BIOS Setup Utility program using the F1 key.
Explains how to navigate and modify system configuration options within the BIOS utility.
Details how to set, change, or delete Administrator and Power-On passwords for security.
Explains the purpose and procedures for setting, changing, or deleting an Administrator password.
Describes how to set, change, or delete a Power-On password to restrict system startup.
Details how to enable or disable various devices like USB, SATA, Audio, and Network controllers.
Explains how to temporarily select a startup device or permanently change the boot sequence.
Lists causes and actions for hard disk drive boot errors, including configuration and replacement.
Provides procedures for diagnosing and resolving power supply issues, checking connections and components.
Lists and explains Power-On Self-Test (POST) error messages and their corresponding actions.
Outlines a procedure for diagnosing problems when the cause is not immediately apparent.
Lists essential steps before starting any hardware disassembly, including powering off and unplugging.
Provides step-by-step instructions for replacing the keyboard and mouse components.
Details the procedure for replacing the power cord and power adapter of the computer.
Explains how to safely remove the base cover of the computer for access to internal components.
Provides step-by-step instructions for removing and replacing the computer's hard disk drive.
Details the process of removing and installing a memory module (RAM) in the computer.
Outlines the steps to remove and replace the computer's system fan.
Describes how to remove and install the heat-sink, including thermal grease application.
Provides instructions for removing and replacing the computer's built-in speaker system.
Details the comprehensive procedure for removing and installing the computer's motherboard.
Explains the steps to remove the hinge assembly from the computer chassis.
Provides instructions on how to remove the rear cover of the computer for access.
Details the procedure for removing and replacing the computer's built-in camera.
Outlines the steps to remove and install the LED panel of the computer.
Provides instructions for removing and installing the transform board.
Details the procedure for removing and installing the Wi-Fi card.
Explains how to remove and install the power switch board.
Provides instructions for removing and installing the NFC module.
Lists Field Replaceable Units (FRUs) for the A540 Mainboard, including part numbers.
Lists Field Replaceable Units (FRUs) for A540 RAM modules, including part numbers.
Lists Field Replaceable Units (FRUs) for A540 Hard Disk Drives, including part numbers.
Lists Field Replaceable Units (FRUs) for A540 Adapters, including part numbers.
Lists Field Replaceable Units (FRUs) for A540 Power Cords, including part numbers.
Lists Field Replaceable Units (FRUs) for A540 Keyboards and Mice, including part numbers.
Lists Field Replaceable Units (FRUs) for A540 Thermal components, including part numbers.
Lists Field Replaceable Units (FRUs) for A540 Cables, including part numbers.
Lists Field Replaceable Units (FRUs) for the A740 Mainboard, including part numbers.
Lists Field Replaceable Units (FRUs) for A740 RAM modules, including part numbers.
Lists Field Replaceable Units (FRUs) for A740 Hard Disk Drives, including part numbers.
Provides supplementary information useful for service representatives.
Explains how power management reduces power consumption of computer components.
Describes ACPI BIOS system allowing OS control of power management features.
Details features like Wake Up on Alarm and Wake Up on LAN for automatic computer startup.
General| Ethernet | Gigabit Ethernet |
|---|---|
| Processor | Intel Core i3/i5/i7 |
| Storage | Up to 2TB HDD |
| Operating System | Windows 10 |
| USB Ports | 2 x USB 2.0 |
| HDMI Port | Yes |
| Wireless | Wi-Fi 802.11 |
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