Table of Contents
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Table of Contents
Related Manuals for Lenovo 20QW
Summarization of Contents
Chapter 1. Safety information
General safety
Rules for safe operation and maintenance procedures.
Electrical safety
Rules to follow when working on electrical equipment.
Safety inspection guide
Checklist for identifying potentially unsafe conditions.
Handling devices that are sensitive to electrostatic discharge
Precautions for handling parts sensitive to electrostatic discharge (ESD).
Grounding requirements
Importance of electrical grounding for operator safety and system function.
Safety notices (multilingual translations)
List of languages in which safety notices are provided.
Chapter 2. Important service information
Strategy for replacing FRUs
Guidelines and strategies for replacing FRUs (Field Replaceable Units).
Strategy for replacing an M.2 solid-state drive
Recommendation for low-level format before replacing an M.2 SSD.
Important notice for replacing a system board
Precautions for handling sensitive system board components.
How to use error message
Guidance on diagnosing failures using error codes.
Strategy for replacing FRUs for CTO, special-bid, and standard models
Information on model types and FRU identification.
Product definition
Explanation of different model types (CTO, special-bid, standard).
FRU identification
Steps to identify FRUs using the Lenovo support website.
Chapter 3. General checkout
What to do first
Information required when returning a FRU.
Checkout guide
Procedures for identifying and correcting problems.
Diagnosing problems
Steps for troubleshooting computer problems.
Quick test programs
Lenovo diagnostic tools for troubleshooting.
UEFI diagnostic program
On-computer diagnostic tool for system checks.
Bootable diagnostic programs
Diagnostic tools that can be created on USB/CD.
Power system checkout
Procedures to verify battery and AC power adapter functionality.
Chapter 4. Related service information
Recovery information for the Windows 10 operating system
Solutions for recovering the Windows 10 operating system.
Passwords
Details on power-on, hard disk, supervisor, and system management passwords.
Power management
Information on sleep and hibernation modes for power saving.
Symptom-to-FRU index
Lists symptoms, errors, and their possible FRU causes.
Chapter 5. Special keys
Windows logo key
Function of the Windows logo key.
Fn key and function keys
Configuration and usage of Fn key and function keys.
Chapter 6. Locations
Front
Locations of controls, connectors, and indicators on the front.
Base
Locations of controls, connectors, and indicators on the base.
Left
Locations of controls, connectors, and indicators on the left side.
Right
Locations of controls, connectors, and indicators on the right side.
Bottom
Locations of controls, connectors, and indicators on the bottom.
Locating FRUs and CRUs
Information on identifying FRUs and CRUs.
Chapter 7. FRU replacement notices
Service tool kit
List of tools required for servicing.
Screw notices
Guidelines for using and tightening screws.
Chapter 8. Removing or replacing a FRU
General guidelines
General advice for removing and replacing FRUs.
Before servicing the computer
Steps to take before starting computer service, including removing external devices and disabling battery.
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