Table of Contents
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Table of Contents
Related Manuals for Lenovo 20KE
Summarization of Contents
Safety Information
General Safety Practices
Guidelines for ensuring safety during maintenance and when handling equipment.
Electrical Safety Precautions
Rules to observe when working on electrical equipment to prevent hazards.
Safety Inspection Guide
Checklist to identify potentially unsafe conditions before servicing the computer.
Handling ESD-Sensitive Devices
Procedures to protect components sensitive to electrostatic discharge (ESD).
Grounding Requirements
Information on electrical grounding for operator safety and system function.
Safety Notices (Multilingual)
Safety warnings and precautions provided in multiple languages.
Important Service Information
Strategy for Replacing FRUs
Guidelines and strategies for replacing Field Replaceable Units (FRUs).
System Board Replacement Notice
Important considerations before replacing a computer's system board.
Using Error Messages for Diagnosis
How to interpret and use error codes for troubleshooting.
FRU Identification
Methods for identifying FRUs using Lenovo eSupport and part lookups.
General Checkout Procedures
Initial Steps Before Checkout
Information to include when returning a FRU and important notes for service.
Checkout Guide
Procedures for identifying and correcting problems with the computer.
Diagnosing Computer Problems
Steps to troubleshoot issues using available documentation and tools.
Diagnostic Test Programs
Information on quick test, UEFI, and bootable diagnostic programs.
Power System Checkout
Procedures to verify the functionality of the battery and AC power adapter.
Checking Battery Status
Steps to check the built-in battery and coin-cell battery.
Related Service Information
Recovery Information
Methods for recovering the operating system, including USB drive creation.
Password Management
Details on power-on, hard disk, and supervisor passwords.
Power Management Modes
Explanation of sleep and hibernation modes for power saving.
Symptom-to-FRU Index
Lists symptoms and errors with corresponding FRUs or actions for troubleshooting.
Error Code and Message Reference
Details on numeric error codes, general error messages, and beep errors.
LCD-Related Symptoms
Troubleshooting guide for common issues related to the LCD display.
Intermittent and Undetermined Problems
Strategies for diagnosing and resolving intermittent or undetermined issues.
Special Keys and Functions
Windows Logo Key Usage
How to use the Windows logo key to open the Start menu.
Fn Key and Function Key Configuration
Customizing Fn key and function keys via Lenovo Keyboard Manager.
Keyboard Key Combinations
Common key combinations for special functions and shortcuts.
Component Locations and Identification
Computer Controls, Connectors, and Indicators
Overview of the computer's external features and ports.
Front View Identification
Locating components visible from the front of the computer.
Left-Side View Identification
Locating components on the left side of the computer.
Right-Side View Identification
Locating components on the right side of the computer.
Rear View Identification
Locating components on the rear of the computer.
Bottom View Identification
Locating components on the bottom of the computer.
Status Indicator Meanings
Explanation of various system status and power indicators.
Locating FRUs and CRUs
Understanding Customer Replaceable Units (CRUs) and FRUs.
Major FRU Identification
List and diagrams of major FRUs within the computer.
LCD FRU Identification
Specific FRUs related to the Liquid Crystal Display (LCD) assembly.
Miscellaneous Parts and FRUs
Identification of smaller components and kits.
Connector and Cable Guide
Reference for identifying and connecting internal cables and connectors.
FRU Replacement Notices
CRU Statement for Customers
Information for customers regarding Customer Replaceable Units (CRUs).
Common Service Tools
List of essential tools required for servicing the computer.
Screw Tightening Notices
Guidelines for proper screw usage and tightening during servicing.
Serial Number Management
Procedures for retaining and restoring system serial numbers and UUIDs.
ECA Information Management
Instructions for reading and writing Engineering Change Announcement (ECA) data.
Removing or Replacing a FRU
General Guidelines for FRU Service
Essential rules and precautions to follow before and during FRU replacement.
Before Servicing the Computer
Steps to take before starting any servicing procedures, including removing devices.
Removing a Major FRU
Introduction to removing major components and general procedures.
Keyboard Removal and Installation
Detailed steps for removing and installing the computer keyboard.
Base Cover Assembly Removal
Instructions for removing the bottom base cover assembly.
M.2 Solid-State Drive Removal
Procedure for removing the M.2 solid-state drive and its thermal rubber.
Built-in Battery Removal
Steps to safely remove the internal built-in battery.
System Board Assembly Removal
Procedure for removing the system board assembly and cable holder.
LCD Unit Removal
Instructions for removing the LCD unit components.
Keyboard Bezel Assembly Removal
Steps for removing the keyboard bezel assembly.
Notices and Trademarks
Electronic Emissions Notices
Information regarding electronic emission standards for digital devices.
Trademarks and Legal Information
List of trademarks and copyright information for Lenovo products.
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