Lenovo 21MA003RGE Manuals

Manuals and User Guides for Lenovo 21MA003RGE. We have 1 Lenovo 21MA003RGE manual available for free PDF download: Hardware Maintenance Manual

Lenovo 21MA003RGE Hardware Maintenance Manual

Lenovo 21MA003RGE Hardware Maintenance Manual (104 pages)

Machine type 21M7; 21M8; 21M3; 21M4; 21MA; 21MB; 21M5; 21M6

Brand: Lenovo | Category: Laptop | Size: 41.78 MB

Table of Contents

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
  32
Chapter 4. Related Service Information

33
- Reset or Restore Windows
  33
- Use Lenovo Recovery Options
  33
- Use Window Recovery Options
  33
- Passwords
  33
- Power-On Password
  34
- Nvme Passwords
  34
- 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
  36
- Power Management
  36
- Sleep Mode
  36
- Hibernation Mode
  37
- 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 View
  47
- Side View
  50
- Locating Frus and Crus
  53
- Major Frus and Crus
  54
- LCD Frus and Crus
  56
- Miscellaneous Parts
  57
- 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
- Reading or Writing the ECA Information
  66
Chapter 8. Removing or Replacing a FRU

67
- General Guidelines
  67
- Before Servicing the Computer
  67
- Disabling the Built-In Battery
  67
- Base Cover Assembly
  68
- Label Location to the Base Cover Assembly
  69
- Memory Module
  71
- M.2 Solid-State Drive
  72
- Speaker Assembly (Only for Thinkpad E16 Gen 2)
  73
- Wireless LAN Card (for Selected Models)
  73
- Thermal Fan Assembly (for Selected Models)
  74
- Fan (for Selected Models)
  75
- Thermal Assembly (for Selected Models)
  76
- Built-In Battery
  76
- I/O Board and I/O Board Cable
  77
- Power Button with or Without Fingerprint Reader and Fingerprint Reader Cable
  80
- Speaker Assembly Only for Thinkpad E14 Gen 6
  80
- Coin-Cell Battery
  81
- Trackpad and Trackpad Cable
  81
- LCD Assembly
  83
- LCD Bezel
  87
- LCD Panel and LCD Cover
  87
- LCD Hinges
  88
- Camera
  89
- Microphone Rubber
  90
- EDP Cable Assembly
  91
- Antenna Assembly
  92
- System Board
  93
- How to Configure Keyboard Language in UEFI BIOS
  97
- Keyboard Assembly
  97
Appendix A. Notices

99
Appendix B. Abbreviation Table

101

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