Lenovo 21KD Manuals

Manuals and User Guides for Lenovo 21KD. We have 2 Lenovo 21KD manuals available for free PDF download: Hardware Maintenance Manual, User Manual

Lenovo 21KD Hardware Maintenance Manual (86 pages)

Brand: Lenovo | Category: Laptop | Size: 38.96 MB

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

7
Chapter 2. Important Service Information

25
Chapter 3. General Checkout

27
- What to Do First
  27
- Checkout Guide
  28
- Diagnosing Problems
  28
- Quick Test Programs
  29
- UEFI Diagnostic Program
  29
- Bootable Diagnostic Programs
  30
- Power System Checkout
  30
- Checking the Ac Power Adapter
  31
- Checking the Built-In Battery and Operational Charging
  31
- Checking the Coin-Cell Battery
  31
Chapter 4. Related Service Information

33
- Reset or Restore Windows
  33
- Passwords
  33
- Power-On Password
  33
- Nvme Passwords
  33
- Supervisor Password
  34
- System Management Password
  34
- How to Remove the Power-On Password
  35
- How to Remove the Nvme Password
  35
- How to Remove the System Management Password
  35
- Power Management
  36
- Sleep Mode
  36
- Hibernation Mode
  36
- Symptom-To-FRU Index
  37
- Numeric Error Codes
  38
- Error Messages
  39
- Battery-Charge LED Indicator Diagnosis
  39
- Beep Symptoms
  41
- LCD-Related Symptoms
  42
- Intermittent Problems
  43
- Undetermined Problems
  43
Chapter 5. Special Keys

45
Chapter 6. Locations

47
- Locating Computer Controls and Connectors
  47
- Front
  47
- Side View
  48
- Bottom
  49
- Locating Frus and Crus
  50
- Major Frus and Crus
  51
- Miscellaneous Parts
  53
- Connector and Cable Guide
  53
- Looking up FRU Information
  55
Chapter 7. FRU Replacement Notices

57
- Service Tool Kit
  57
- Screw Notices
  57
- Retaining Serial Numbers
  58
- Restoring the Serial Number of the System Unit
  58
- Retaining the UUID
  59
- Reading or Writing the ECA Information
  59
Chapter 8. Removing or Replacing a FRU

61
Appendix A. Notices

81
Appendix B. Abbreviation Table

83

Lenovo 21KD User Manual (50 pages)

Brand: Lenovo | Category: Laptop | Size: 16.15 MB

Table of Contents
3
About this Documentation
5
Chapter 1. Meet Your Computer

7
- Front View
  7
- Side View
  9
- Bottom View
  10
- USB Connectors
  11
Chapter 2. Get Started with Your Computer

13
- Get Started with Your Desktop
  13
- Manage Networks
  13
- Connect to a Cellular Network (for Selected Models)
  14
- Airplane Mode
  14
- Interact with Your Computer
  14
- Use the Camera
  15
- Use the Keyboard Shortcuts
  15
- Use the Trackpoint Pointing Device
  16
- Use the Trackpad
  17
- Connect to an External Display
  18
Chapter 3. Explore Your Computer

19
Chapter 4. Secure Your Computer and Information

23
- Lock the Computer
  23
- Use the Fingerprint Reader
  23
- Use Passwords
  24
- Password Types
  24
- Set, Change, and Remove a Password
  25
- Use Power Loss Protection Function
  26
Chapter 5. Configure Advanced Settings

29
- Uefi Bios
  29
- What Is UEFI BIOS
  29
- Enter the UEFI BIOS Menu
  29
- Navigate in the UEFI BIOS Interface
  29
- Change the Startup Sequence
  29
- Detect Memory Retraining (for Intel Models Only)
  30
- Set the System Date and Time
  30
- Recover the UEFI BIOS
  30
- Update UEFI BIOS
  30
Chapter 6. CRU Replacement

33
Chapter 7. Help and Support

39
- Frequently Asked Questions
  39
- Error Messages
  40
- Self-Help Resources
  41
- Call Lenovo
  42
- Before You Contact Lenovo
  42
- Lenovo Customer Support Center
  43
- Purchase Additional Services
  44
Appendix A. Compliance Information

45
Appendix B. Notices and Trademarks

47

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Lenovo 21KD Manuals

Lenovo 21KD Hardware Maintenance Manual (86 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 Table

Lenovo 21KD User Manual (50 pages)

Table of Contents

Chapter 1. Meet Your Computer

Chapter 2. Get Started with Your Computer

Chapter 3. Explore Your Computer

Chapter 4. Secure Your Computer and Information

Chapter 5. Configure Advanced Settings

Chapter 6. CRU Replacement

Chapter 7. Help and Support

Appendix A. Compliance Information

Appendix B. Notices and Trademarks

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Lenovo Categories