Lenovo 20T7 Manuals

Manuals and User Guides for Lenovo 20T7. We have 1 Lenovo 20T7 manual available for free PDF download: Hardware Maintenance Manual

Lenovo 20T7 Hardware Maintenance Manual

Lenovo 20T7 Hardware Maintenance Manual (113 pages)

Brand: Lenovo | Category: Laptop | Size: 41.91 MB

Table of Contents

Table of Contents
3
About this Manual

5
Chapter 1. Safety Information

7
Chapter 2. Important Service Information

27
- Strategy for Replacing Frus
  27
- Strategy for Replacing Frus for CTO, Special Bid Model, and Standard Models
  28
  - Product Definition
    28
  - FRU Identification
    28
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
Chapter 4. Related Service Information

37
- Reset or Restore Windows
  37
- Passwords
  37
  - Power-On Password
    37
  - Hard Disk Password
    37
  - Supervisor Password
    38
  - How to Remove the Power-On Password
    38
  - How to Remove the Hard Disk Password
    39
- Power Management
  39
  - Sleep Mode
    39
  - Hibernation Mode
    40
- Symptom-To-FRU Index
  40
  - Numeric Error Codes
    41
  - Error Messages
    42
  - Beep Errors
    42
  - No-Beep Symptoms
    44
  - LCD-Related Symptoms
    44
  - Intermittent Problems
    45
  - Undetermined Problems
    45
Chapter 5. Special Keys

47
Chapter 6. Locations

49
- Locating Computer Controls, Connectors, and Indicators
  49
  - Front
    49
  - Base
    50
  - Left
    51
  - Right
    52
- Locating Frus and Crus
  52
  - Major Frus
    54
  - LCD Frus
    56
  - Miscellaneous Parts
    58
  - Connector and Cable Guide
    58
- Looking up FRU Information
  61
Chapter 7. FRU Replacement Notices

63
- Service Tool Kit
  63
- Screw Notices
  63
- Retaining Serial Numbers
  64
  - Restoring the Serial Number of the System Unit
    64
  - Retaining the UUID
    65
Chapter 8. Removing or Replacing a FRU

67
- General Guidelines
  67
- Before Servicing the Computer
  68
- Disabling the Built-In Battery
  68
- 1010 Base Cover Assembly
  68
- 1020 Built-In Battery
  71
- 1030 Memory Shield and Memory Module
  72
- 1040 M.2 Solid-State Drive
  73
- 1050 Speaker Assembly
  75
- 1060 Wireless LAN Card
  75
- 1070 Thermal Fan Assembly
  76
- 1080 I/O Card and Cable
  78
- 1090 Power Button/Fingerprint Reader Module and Cable
  81
- 1100 Coin-Cell Battery
  81
- 1110 Trackpad Cable and Trackpad
  82
- 1120 Earbuds
  83
- 1130 Earbud Cable and Earbud USB-C Board
  83
- 1140 Earbud Tray
  84
- 1150 Earbud Bracket
  85
- 1160 Earbud Tray Front Bezel
  85
- 1170 LCD Unit
  86
- 1180 System Board
  89
- 1190 Keyboard Assembly
  92
- 2010 LCD Bezel Assembly
  92
- 2020 LCD Panel
  93
- 2030 Hinge Kit
  97
- 2040 Integrated Camera and Microphone Combo Card
  98
- 2050 Edp Cable Assembly
  100
- 2060 Wireless LAN Antennas Assembly
  102
- 2070 LCD Cover Assembly
  105
Appendix A. Notices

107
Appendix B. Abbreviation and Acronym Table

109

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