Lenovo 20D9 Manuals

Manuals and User Guides for Lenovo 20D9. We have 1 Lenovo 20D9 manual available for free PDF download: Hardware Maintenance Manual

Lenovo 20D9 Hardware Maintenance Manual

Lenovo 20D9 Hardware Maintenance Manual (94 pages)

Machine types: 20D9 and 20DA

Brand: Lenovo | Category: Laptop | Size: 21.78 MB

Table of Contents

Table of Contents
3
About this Manual

5
Chapter 1. Safety Information

7
Chapter 2. Important Service Information

25
- Strategy for Replacing Frus
  25
- Strategy for Replacing Frus for CTO, Special-Bid, and Standard Models
  26
  - Product Definition
    26
  - FRU Identification
    26
Chapter 3. General Checkout

29
- What to Do First
  29
- Checkout Guide
  30
  - Lenovo Solution Center
    30
  - Quick Test Programs
    30
  - UEFI Diagnostic Program
    31
  - Bootable Diagnostic Programs
    31
- Power System Checkout
  32
Chapter 4. Related Service Information

35
- Restoring the Factory Contents by Using the Product Recovery Disc Set
  35
- Using the Windows Recovery Programs on the Windows 8.1 Operating System
  36
- Passwords
  38
  - Power-On Password
    38
  - Hard Disk Password
    38
  - Supervisor Password
    39
  - How to Remove the Power-On Password
    39
  - How to Remove the Hard Disk Password
    40
- Power Management
  40
  - Screen Blank Mode (for the Windows 7 Operating System Only)
    40
  - Sleep Mode
    40
    
    Hibernation Mode
    41
- Symptom-To-FRU Index
  41
  - Numeric Error Codes
    42
  - Error Messages
    43
    
    Beep Symptoms
    43
    
    No-Beep Symptoms
    43
    
    LCD-Related Symptoms
    43
    
    Intermittent Problems
    44
    
    Undetermined Problems
    44
    
    Copyright Lenovo
    45
Chapter 5. Locations

45
- Locating Computer Controls, Connectors, and Indicators
  45
- Front View
  45
  - Left-Side View
    47
  - Bottom View
    48
- Locating Frus and Crus
  48
  - Major Frus
    49
- LCD Frus
  51
  - Miscellaneous Parts and Other Frus
    54
- Looking up FRU Information
  54
Chapter 6. FRU Replacement Notices

55
Chapter 7. Removing or Replacing a FRU

59
Appendix A. Notices

91
- Electronic Emissions Notices
  92
- Trademarks
  92

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