Lenovo 20YH Manuals

Manuals and User Guides for Lenovo 20YH. We have 2 Lenovo 20YH manuals available for free PDF download: Hardware Maintenance Manual

Lenovo 20YH Hardware Maintenance Manual (118 pages)

Brand: Lenovo | Category: Laptop | Size: 41.7 MB

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
- Beep Symptoms
  45
- LCD-Related Symptoms
  45
- Intermittent Problems
  46
- Undetermined Problems
  46
Chapter 5. Special Keys

49
Chapter 6. Locations

51
- Locating Computer Controls, Connectors, and Indicators
  51
- Front View
  51
- Side View
  54
- Locating Frus and Crus
  54
- Major Frus
  55
- LCD Frus
  60
- Miscellaneous Parts
  61
- Connector and Cable Guide
  62
- Looking up FRU Information
  65
Chapter 7. FRU Replacement Notices

67
- Service Tool Kit
  67
- Screw Notices
  67
- Retaining Serial Numbers
  68
- Restoring the Serial Number of the System Unit
  68
- Retaining the UUID
  69
Chapter 8. Removing or Replacing a FRU

71
- General Guidelines
  71
- Before Servicing the Computer
  72
- Disabling the Built-In Battery
  72
- 1010 Base Cover Assembly
  72
- 1020 Built-In Battery
  75
- 1030 Memory Module and Memory Module Bracket
  76
- 1040 M.2 Solid-State Drive
  76
- 1050 Speaker Assembly
  78
- 1060 Wireless LAN Card
  79
- 1070 Thermal Fan Assembly
  80
- 1080 I/O Board and I/O Board Cable
  81
- 1090 Power Button (with Fingerprint Reader*) and Power Button (with Fingerprint Reader*) Cable
  85
- 1100 Coin-Cell Battery
  85
- 1110 Trackpad Cable and Trackpad
  86
- 1120 Earbuds
  87
- 1130 Earbud Cable and Earbud USB-C Board
  88
- 1140 Earbud Tray
  88
- 1150 Earbud Bracket
  89
- 1160 Earbud Tray Front Bezel
  89
- 1170 System Board
  90
- 1180 LCD Unit
  94
- 1190 Keyboard Assembly
  97
- 2010 LCD Bezel Assembly
  97
- 2020 LCD Panel
  98
- 2030 Hinge Kit
  103
- 2040 Camera and Microphone Combo Card
  104
- 2050 Edp Cable Assembly
  106
- 2060 Wireless LAN Antenna Assembly
  108
- 2070 LCD Cover Assembly
  111
Appendix A. Notices

113
Appendix B. Abbreviation and Acronym Table

115

Lenovo 20YH Hardware Maintenance Manual (116 pages)

Brand: Lenovo | Category: Laptop | Size: 41.31 MB

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
  52
- Major Frus
  53
- LCD Frus
  58
- Miscellaneous Parts
  59
- Connector and Cable Guide
  60
- Looking up FRU Information
  63
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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Lenovo 20YH Manuals

Lenovo 20YH Hardware Maintenance Manual (118 pages)

Table of Contents

Chapter 1. Safety Information

Chapter 2. Important Service Information

Chapter 3. General Checkout

Chapter 4. Related Service Information

Chapter 5. Special Keys

Chapter 6. Locations

Chapter 7. FRU Replacement Notices

Chapter 8. Removing or Replacing a FRU

Appendix A. Notices

Appendix B. Abbreviation and Acronym Table