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Lenovo Manuals
Laptop
E14 Gen 4
Hardware maintenance manual
Lenovo E14 Gen 4 Hardware Maintenance Manual
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Contents
Table of Contents
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Table of Contents
Table of Contents
About this Manual
Chapter 1. Safety Information
General Safety
Electrical Safety
Safety Inspection Guide
Handling Devices that Are Sensitive to Electrostatic Discharge
Grounding Requirements
Safety Notices (Multilingual Translations)
Chapter 2. Important Service Information
Strategy for Replacing Frus
Strategy for Replacing a Solid-State Drive
Important Notice for Replacing a System Board
How to Use Error Message
Strategy for Replacing Frus for CTO, Special Bid Model, and Standard Models
Product Definition
FRU Identification
Chapter 3. General Checkout
What to Do First
Checkout Guide
Diagnosing Problems
Quick Test Programs
UEFI Diagnostic Program
Bootable Diagnostic Programs
Power System Checkout
Checking the Ac Power Adapter
Checking the Built-In Battery and Operational Charging
Checking the Coin-Cell Battery
Chapter 4. Related Service Information
Reset or Restore Windows
Passwords
Power-On Password
Nvme Password
Supervisor Password
System Management Password
How to Remove the Power-On Password
How to Remove the Nvme Password
How to Remove the System Management Password
Power Management
Sleep Mode
Hibernation Mode
Symptom-To-FRU Index
Numeric Error Codes
Error Messages
Beep Errors
No-Beep Symptoms
LCD-Related Symptoms
Intermittent Problems
Undetermined Problems
Chapter 5. Special Keys
Chapter 6. Locations
Locating Computer Controls, Connectors, and Indicators
Front View
Side View
Locating Frus and Crus
Major Frus
LCD Frus
Miscellaneous Parts
Connector and Cable Guide
Looking up FRU Information
Chapter 7. FRU Replacement Notices
Service Tool Kit
Screw Notices
Retaining Serial Numbers
Restoring the Serial Number of the System Unit
Retaining the UUID
Chapter 8. Removing or Replacing a FRU
General Guidelines
Before Servicing the Computer
Disabling the Built-In Battery
1010 Base Cover Assembly
1020 Built-In Battery
1030 Memory Module and Memory Module Bracket
1040 M.2 Solid-State Drive
1050 Speaker Assembly
1060 Wireless LAN Card
1070 Thermal Fan Assembly
1080 I/O Board and I/O Board Cable
1090 Power Button (with Fingerprint Reader*) and Power Button (with Fingerprint Reader*) Cable
1100 Coin-Cell Battery
1110 Trackpad Cable and Trackpad
1120 Earbuds
1130 Earbud Cable and Earbud USB-C Board
1140 Earbud Tray
1150 Earbud Bracket
1160 Earbud Tray Front Bezel
1170 System Board
1180 LCD Unit
1190 Keyboard Assembly
2010 LCD Bezel Assembly
2020 LCD Panel
2030 Hinge Kit
2040 Camera and Microphone Combo Card
2050 Edp Cable Assembly
2060 Wireless LAN Antenna Assembly
2070 LCD Cover Assembly
Appendix A. Notices
Appendix B. Abbreviation and Acronym Table
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Hardware Maintenance Manual
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