Lenovo 21A1 Manuals

Manuals and User Guides for Lenovo 21A1. We have 2 Lenovo 21A1 manuals available for free PDF download: Hardware Maintenance Manual, User Manual

Lenovo 21A1 Hardware Maintenance Manual

Lenovo 21A1 Hardware Maintenance Manual (137 pages)

Brand: Lenovo | Category: Laptop | Size: 65 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
  32
- 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
- Recovery Overview for the Windows 10 Operating System
  37
- Resetting Your Computer
  37
- Using Advanced Startup Options
  37
- Recovering Your Operating System if Windows 10 Fails to Start
  38
- Creating and Using a Recovery USB Drive
  38
- Passwords
  39
- Power-On Password
  39
- Nvme Password
  39
- Supervisor Password
  39
- System Management Password
  40
- How to Remove the Power-On Password
  40
- How to Remove the Nvme Password
  41
- How to Remove the System Management Password
  41
- Power Management
  42
- Sleep Mode
  42
- Hibernation Mode
  42
- Symptom-To-FRU Index
  43
- Numeric Error Codes
  43
- Error Messages
  45
- Beep Errors
  45
- Beep Symptoms
  47
- LCD-Related Symptoms
  47
- Intermittent Problems
  48
- Undetermined Problems
  48
Chapter 5. Special Keys

51
Chapter 6. Locations

53
- Locating Computer Controls, Connectors, and Indicators
  53
- Front View
  53
- Side View
  54
- Bottom
  56
- Rear View
  56
- Locating Frus and Crus
  56
- Major Frus and Crus
  58
- LCD Frus
  61
- Miscellaneous Parts
  62
- Connector and Cable Guide
  63
- Looking up FRU Information
  70
Chapter 7. FRU Replacement Notices

71
- Service Tool Kit
  71
- Screw Notices
  71
- Retaining Serial Numbers
  72
- Restoring the Serial Number of the System Unit
  72
- Retaining the UUID
  73
Chapter 8. Removing or Replacing a FRU

75
Appendix A. Notices

131
Appendix B. Abbreviation and Acronym Table

133

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Lenovo 21A1 User Manual

Lenovo 21A1 User Manual (80 pages)

Brand: Lenovo | Category: Laptop | Size: 26 MB

Table of Contents

Table of Contents
3
Discover Your Lenovo Notebook
5
Chapter 1. Meet Your Computer
7
Front View
7
Side View
10
Bottom View
12
Rear View
13
Specifications
13
USB Specifications
13
Chapter 2. Get Started with Your Computer
15
Access Networks
15
Connect to Wi-Fi Networks
15
Connect to the Wired Ethernet (for Selected Models)
15
Connect to a Cellular Network (for Selected Models)
15
Turn on the Airplane Mode
16
Interact with Your Computer
16
Use the Keyboard Shortcuts
16
Use the Trackpoint Pointing Device
18
Use the Trackpad
19
Use the Touch Screen (for Selected Models)
20
Connect to an External Display
22
Chapter 3. Explore Your Computer
25
Lenovo Apps
25
Smart Features (for Selected Models)
25
Color Calibration (for Selected Models)
28
Intelligent Cooling
28
Manage Power
29
Check the Battery Status
29
Charge the Computer
29
Change the Power Settings
31
Transfer Data
31
Set up a Bluetooth Connection
31
Set up an NFC Connection (for Selected Models)
31
Use a Microsd Card or Smart Card (for Selected Models)
32
Use the RFID Feature (for Selected Intel Models)
33
Accessories
33
Purchase Accessories
33
Docking Station
33
Detach a Docking Station
36
Connect Multiple External Displays
36
Copyright Lenovo 2021, 2022
39
Chapter 4. Secure Your Computer and Information
39
Lock the Computer
39
Log in with Your Fingerprint (for Selected Models)
39
Log in with Your Face ID (for Selected Models)
39
Protect Your Privacy (for Selected Models)
40
Protect Data against Power Loss (for Selected Models)
40
UEFI BIOS Passwords
40
Password Types
40
Set, Change, and Remove a Password
42
Associate Your Fingerprints with Passwords (for Selected Models)
43
Chapter 5. Configure Advanced Settings
45
Uefi Bios
45
Enter the UEFI BIOS Menu
45
Navigate in the UEFI BIOS Interface
45
Set the System Date and Time
45
Change the Startup Sequence
45
Update UEFI BIOS
45
Install a Windows Operating System and Drivers
46
Chapter 6. CRU Replacement
49
CRU List
49
Disable Fast Startup and the Built-In Battery
50
Replace a CRU
50
Base Cover Assembly (T14 Gen 2 and P14S Gen 2)
50
Base Cover Assembly (T15 Gen 2 and P15S Gen 2)
52
Memory Module (for Selected Models)
54
M.2 Solid-State Drive
55
Coin-Cell Battery
57
Wireless WAN Card (for Selected Models)
57
Speaker Assembly
59
Always on USB 3.2 Connector Gen 1 Board and Bracket
59
Keyboard
60
Chapter 7. Help and Support
67
Frequently Asked Questions
67
Error Messages
68
Beep Errors
69
Self-Help Resources
70
Windows Label
71
Call Lenovo
71
Before You Contact Lenovo
71
Lenovo Customer Support Center
73
Purchase Additional Services
73
Appendix A. Compliance Information
75
Certification-Related Information
75
Operating Environment
76
Appendix B. Notices and Trademarks
79

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