Table of Contents
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Table of Contents
Related Manuals for Lenovo 21LK
Summarization of Contents
Safety Information
General Safety
Rules for safe operation and handling of equipment.
Electrical Safety
Rules for working with electrical equipment and avoiding shocks.
ESD Handling Procedures
Procedures to prevent ESD damage to sensitive components.
Grounding Requirements
Importance of proper electrical grounding for safety and function.
Important Service Information
FRU Replacement Strategy
Guidelines and best practices for replacing Field Replaceable Units.
Solid-State Drive Replacement
Procedures for replacing an SSD, including data backup.
FRU Identification
Steps to identify Field Replaceable Units using support website.
General Checkout
Initial Troubleshooting Steps
Essential information to gather before troubleshooting and returning FRUs.
Troubleshooting Methods
Methods for troubleshooting computer issues using documentation and tools.
Power System Checks
Procedures to verify functionality of battery and AC adapter.
Related Service Information
Passwords
Managing system passwords in UEFI BIOS for security.
Symptom-to-FRU Troubleshooting Guide
Troubleshooting guide listing symptoms, causes, and FRU replacements.
Use the Keyboard Shortcuts
Function Key Shortcuts
Using FnLock and function keys for special operations.
General Keyboard Shortcuts
Common keyboard shortcuts for enhanced productivity.
Locations
Computer Controls and Connectors Overview
Overview of computer's physical controls and connectors.
Major FRUs and CRUs Identification
Lists and diagrams of key Field Replaceable Units and CRUs.
System Board Connector and Cable Guide
System board connectors and their cable connections.
FRU Replacement Notices
Required Service Tools
Required tools for servicing the notebook computer.
Serial Number and UUID Management
Procedures for restoring system serial number and UUID.
Removing or Replacing a FRU
FRU Replacement General Guidelines
Overall rules for safely removing and replacing FRUs.
Disable Built-in Battery
Steps to disable the battery before removing components.
LCD Module Replacement
Instructions for removing and replacing the LCD module.
Built-in Battery Replacement
Instructions for replacing the internal battery.
M.2 SSD Replacement
Instructions for replacing the M.2 solid-state drive.
System Board Replacement
Procedures for removing and replacing the system board.
Notices
Product Trademarks
List of company and product trademarks used in the manual.
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