Lenovo 20KF Manuals

Lenovo 20KF Manuals

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

Lenovo 20KF Hardware Maintenance Manual

Lenovo 20KF Hardware Maintenance Manual (110 pages)

Brand: Lenovo | Category: Laptop | Size: 48.6 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 Battery and Operational Charging
  35
- Checking the Coin-Cell Battery
  35
Chapter 4. Related Service Information

37
- Recovery Information
  37
- Recovery Information for the Windows 10 Operating System
  37
- Passwords
  39
- Power-On Password
  39
- Hard Disk Password
  39
- Supervisor Password
  39
- How to Remove the Power-On Password
  40
- How to Remove the Hard Disk Password
  40
- Power Management
  41
- Sleep Mode
  41
- Hibernation Mode
  41
- Symptom-To-FRU Index
  42
- Numeric Error Codes
  42
- Error Messages
  44
- Beep Errors
  44
- LCD-Related Symptoms
  45
- Intermittent Problems
  46
- Undetermined Problems
  46
Chapter 5. Special Keys

49
Chapter 6. Locations

51
- Computer Controls, Connectors, and Indicators
  51
- Front View
  51
- Left-Side View
  52
- Right-Side View
  52
- Rear View
  52
- Bottom View
  53
- Status Indicators
  53
- Locating Frus and Crus
  55
- Major Frus
  56
- LCD Frus
  59
- Miscellaneous Parts and Other Frus
  61
- Connector and Cable Guide
  61
- Looking up FRU Information
  64
Chapter 7. FRU Replacement Notices

65
Chapter 8. Removing or Replacing a FRU

69
Appendix A. Notices

107
- Electronic Emissions Notices
  108
- Trademarks
  108

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