Lenovo E15 Gen 4 Laptop Manuals

Manuals and User Guides for Lenovo E15 Gen 4 Laptop. We have 1 Lenovo E15 Gen 4 Laptop manual available for free PDF download: Hardware Maintenance Manual

Lenovo E15 Gen 4 Hardware Maintenance Manual

Lenovo E15 Gen 4 Hardware Maintenance Manual (116 pages)

Brand: Lenovo | Category: Laptop | Size: 41.59 MB

Table of Contents

Table of Contents
3
About this Manual
5
Chapter 1. Safety Information

7
Chapter 2. Important Service Information

27
Chapter 3. General Checkout

31
- What to Do First
  31
- Checkout Guide
  32
- Diagnosing Problems
  32
- Quick Test Programs
  33
- UEFI Diagnostic Program
  33
- Bootable Diagnostic Programs
  33
- Power System Checkout
  34
- Checking the Ac Power Adapter
  34
- Checking the Built-In Battery and Operational Charging
  35
- Checking the Coin-Cell Battery
  35
Chapter 4. Related Service Information

37
- Reset or Restore Windows
  37
- Passwords
  37
- Power-On Password
  37
- Nvme Password
  37
- Supervisor Password
  38
- System Management Password
  38
- How to Remove the Power-On Password
  39
- How to Remove the Nvme Password
  39
- How to Remove the System Management Password
  39
- Power Management
  40
- Sleep Mode
  40
- Hibernation Mode
  41
- Symptom-To-FRU Index
  41
- Numeric Error Codes
  42
- Error Messages
  43
- Beep Errors
  43
- No-Beep Symptoms
  45
- LCD-Related Symptoms
  45
- Intermittent Problems
  46
- Undetermined Problems
  46
Chapter 5. Special Keys

47
Chapter 6. Locations

49
- Locating Computer Controls, Connectors, and Indicators
  49
- Front View
  49
- Side View
  52
- Locating Frus and Crus
  53
- Major Frus
  54
- LCD Frus
  59
- Miscellaneous Parts
  60
- Connector and Cable Guide
  61
- Looking up FRU Information
  64
Chapter 7. FRU Replacement Notices

65
- Service Tool Kit
  65
- Screw Notices
  65
- Retaining Serial Numbers
  66
- Restoring the Serial Number of the System Unit
  66
- Retaining the UUID
  67
Chapter 8. Removing or Replacing a FRU

69
- General Guidelines
  69
- Before Servicing the Computer
  70
- Disabling the Built-In Battery
  70
- 1010 Base Cover Assembly
  70
- 1020 Built-In Battery
  73
- 1030 Memory Module and Memory Module Bracket
  74
- 1040 M.2 Solid-State Drive
  74
- 1050 Speaker Assembly
  76
- 1060 Wireless LAN Card
  77
- 1070 Thermal Fan Assembly
  78
- 1080 I/O Board and I/O Board Cable
  79
- 1090 Power Button (with Fingerprint Reader*) and Power Button (with Fingerprint Reader*) Cable
  83
- 1100 Coin-Cell Battery
  83
- 1110 Trackpad Cable and Trackpad
  84
- 1120 Earbuds
  85
- 1130 Earbud Cable and Earbud USB-C Board
  86
- 1140 Earbud Tray
  86
- 1150 Earbud Bracket
  87
- 1160 Earbud Tray Front Bezel
  87
- 1170 System Board
  88
- 1180 LCD Unit
  92
- 1190 Keyboard Assembly
  95
- 2010 LCD Bezel Assembly
  95
- 2020 LCD Panel
  96
- 2030 Hinge Kit
  101
- 2040 Camera and Microphone Combo Card
  102
- 2050 Edp Cable Assembly
  104
- 2060 Wireless LAN Antenna Assembly
  106
- 2070 LCD Cover Assembly
  109
Appendix A. Notices

111
Appendix B. Abbreviation and Acronym Table

113

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