To Next PageTo Next Page
Need help?Do you have a question about the Lenovo Ideapad E490 and is the answer not in the manual?
Follow these rules to ensure general safety during maintenance procedures.
Observe safety rules when working with electrical equipment and tools.
Guide to identify and assess potentially unsafe conditions before servicing.
Precautions for preventing damage to electronic components from static discharge.
Ensuring proper electrical grounding for operator safety and system function.
List of languages available for important safety notices and warnings.
Guidelines and strategy for replacing Field Replaceable Units (FRUs).
Steps for replacing hard disk, hybrid, or solid-state drives.
Information on identifying different Lenovo product model types (CTO, special bid).
How to identify Field Replaceable Units (FRUs) for specific computer models.
Information required when returning parts for exchange or repair.
Procedures for identifying and correcting computer problems using diagnostic tools.
Methods for troubleshooting computer issues, including software and hardware.
Using quick test programs and UEFI diagnostics for system troubleshooting.
Procedures to verify power supply symptoms and check key components.
Restoring the computer to factory settings using recovery discs or USB drives.
Overview of resetting the PC and using advanced startup options.
Information on power-on, hard disk, and supervisor passwords and their removal.
Understanding and using sleep and hibernation modes for power saving.
Mapping symptoms and error codes to potential Field Replaceable Units (FRUs).
Interpreting numeric error codes for troubleshooting.
Interpreting error messages and beep codes for troubleshooting.
Diagnosing issues without beep codes and common LCD display problems.
Procedures for diagnosing and resolving intermittent or unidentified system issues.
Identifying front, base, left, and right side components of the computer.
Locating controls, connectors, and indicators on the front panel of the computer.
Locating controls, connectors, and indicators on the base of the computer.
Locating controls, connectors, and indicators on the left side of the computer.
Locating controls, connectors, and indicators on the right side of the computer.
Locating and identifying Field Replaceable Units (FRUs) and Customer Replaceable Units (CRUs).
List and classification of major FRUs, including self-service and optional-service.
Specific FRUs related to the Liquid Crystal Display (LCD) assembly.
Details on miscellaneous parts, screws, and connector/cable guides.
Mapping system board connectors and their associated cables for connectivity.
Resources for finding detailed FRU information, part numbers, and substitutions.
List of tools and consumables required for FRU replacement procedures.
Notices regarding screw types, usage, and proper tightening torque.
Procedures for restoring serial numbers and retaining Universally Unique Identifiers (UUIDs).
Essential guidelines and safety precautions before removing or replacing FRUs.
Steps for removing the microSD card and disabling the built-in battery.
Procedures for removing and replacing the keyboard and the base cover assembly.
Detailed steps for replacing the hard disk drive or solid-state drive.
Instructions for removing and installing the computer's memory module.
Guidelines and steps for carefully removing and replacing the system board.
Procedures for removing and installing the LCD unit, bezel, and panel.
Information regarding Lenovo product offerings, patents, warranties, and disclaimers.
Notices on electromagnetic emissions compliance and product/company trademarks.
Follow these rules to ensure general safety during maintenance procedures.
Observe safety rules when working with electrical equipment and tools.
Guide to identify and assess potentially unsafe conditions before servicing.
Precautions for preventing damage to electronic components from static discharge.
Ensuring proper electrical grounding for operator safety and system function.
List of languages available for important safety notices and warnings.
Guidelines and strategy for replacing Field Replaceable Units (FRUs).
Steps for replacing hard disk, hybrid, or solid-state drives.
Information on identifying different Lenovo product model types (CTO, special bid).
How to identify Field Replaceable Units (FRUs) for specific computer models.
Information required when returning parts for exchange or repair.
Procedures for identifying and correcting computer problems using diagnostic tools.
Methods for troubleshooting computer issues, including software and hardware.
Using quick test programs and UEFI diagnostics for system troubleshooting.
Procedures to verify power supply symptoms and check key components.
Restoring the computer to factory settings using recovery discs or USB drives.
Overview of resetting the PC and using advanced startup options.
Information on power-on, hard disk, and supervisor passwords and their removal.
Understanding and using sleep and hibernation modes for power saving.
Mapping symptoms and error codes to potential Field Replaceable Units (FRUs).
Interpreting numeric error codes for troubleshooting.
Interpreting error messages and beep codes for troubleshooting.
Diagnosing issues without beep codes and common LCD display problems.
Procedures for diagnosing and resolving intermittent or unidentified system issues.
Identifying front, base, left, and right side components of the computer.
Locating controls, connectors, and indicators on the front panel of the computer.
Locating controls, connectors, and indicators on the base of the computer.
Locating controls, connectors, and indicators on the left side of the computer.
Locating controls, connectors, and indicators on the right side of the computer.
Locating and identifying Field Replaceable Units (FRUs) and Customer Replaceable Units (CRUs).
List and classification of major FRUs, including self-service and optional-service.
Specific FRUs related to the Liquid Crystal Display (LCD) assembly.
Details on miscellaneous parts, screws, and connector/cable guides.
Mapping system board connectors and their associated cables for connectivity.
Resources for finding detailed FRU information, part numbers, and substitutions.
List of tools and consumables required for FRU replacement procedures.
Notices regarding screw types, usage, and proper tightening torque.
Procedures for restoring serial numbers and retaining Universally Unique Identifiers (UUIDs).
Essential guidelines and safety precautions before removing or replacing FRUs.
Steps for removing the microSD card and disabling the built-in battery.
Procedures for removing and replacing the keyboard and the base cover assembly.
Detailed steps for replacing the hard disk drive or solid-state drive.
Instructions for removing and installing the computer's memory module.
Guidelines and steps for carefully removing and replacing the system board.
Procedures for removing and installing the LCD unit, bezel, and panel.
Information regarding Lenovo product offerings, patents, warranties, and disclaimers.
Notices on electromagnetic emissions compliance and product/company trademarks.
General