Lenovo 21LX Manuals

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

Lenovo 21LX Hardware Maintenance Manual (132 pages)

Brand: Lenovo | Category: Laptop | Size: 65 MB

Table of Contents
3
About this Manual
5
Chapter 1. Safety Information
7
General Safety
7
Electrical Safety
7
Safety Inspection Guide
9
Handling Devices that Are Sensitive to Electrostatic Discharge
9
Grounding Requirements
10
Safety Notices (Multilingual Translations)
10
Chapter 2. Important Service Information
25
Strategy for Replacing Frus
25
Strategy for Replacing a Solid-State Drive
25
How to Use Error Message
26
Strategy for Replacing Frus for CTO, Special-Bid, and Standard Models
26
Product Definition
26
FRU Identification
26
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
30
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
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 Hard Disk Password
36
How to Remove the System Management Password
36
Power Management
37
Sleep Mode
37
Hibernation Mode
37
Symptom-To-FRU Index
38
Numeric Error Codes
38
Error Messages
40
Battery-Charge LED Indicator Diagnosis
40
No-Beep Symptoms
42
LCD-Related Symptoms
43
Intermittent Problems
44
Undetermined Problems
44
Lenovo Memory Self Repair (for Intel Models Only)
45
Chapter 5. Special Keys
47
Chapter 6. Locations
49
Locating Computer Controls and Connectors
49
Front
49
Left and Right
52
Bottom
53
Locating Frus and Crus
55
Major Frus and Crus
56
LCD Frus and Crus
60
Miscellaneous Parts
64
Connector and Cable Guide
65
Looking up FRU Information
67
Chapter 7. FRU Replacement Notices
69
Service Tool Kit
69
Screw Notices
69
Sensor Calibration (for Thinkpad X13 2-In-1 Gen 5 Only)
70
Retaining Serial Numbers
71
Restoring the Serial Number of the System Unit
71
Retaining the UUID
72
Reading or Writing the ECA Information
73
Chapter 8. Removing or Replacing a FRU
75
General Guidelines
75
Before Servicing the Computer
75
Disabling the Built-In Battery
75
Removing the Nano-SIM Card and Nano-SIM-Card Tray (for Selected Models)
76
Lenovo Integrated Pen (for Selected Thinkpad X13 2-In-1 Gen 5 Models)
76
Base Cover Assembly
77
Applying Labels to the Base Cover Assembly
78
Pen Dummy (for Selected Thinkpad X13 2-In-1 Gen 5 Models)
79
M.2 Solid-State Drive, Bracket, and Thermal Pad
80
Wireless WAN Module, Bracket, and Thermal Pad (for Selected Models)
81
Cable Guide
84
Built-In Battery
84
Thermal Fan Assembly
86
Speaker Assembly of Thinkpad X13 Gen 5
87
Speaker Assembly of Thinkpad X13 2-In-1 Gen 5
90
Coin-Cell Battery of Thinkpad X13 Gen 5
90
Coin-Cell Battery of Thinkpad X13 2-In-1 Gen 5
92
Smart Card Reader-Trackpad-NFC Cable of Thinkpad X13 Gen 5 (for Selected Models)
92
Models)
92
Trackpad and Trackpad Cable of Thinkpad X13 Gen 5
93
Trackpad and Trackpad Cable of Thinkpad X13 2- In-1 Gen 5
96
NFC Card of Thinkpad X13 Gen 5
99
NFC Card of Thinkpad X13 2-In-1 Gen 5
99
Smart Card Reader (for Selected Models)
100
Dummy Smart Card Reader (for Selected Models)
100
Base Cover Assembly
100
Built-In Battery
100
Wireless WAN Antennas of Thinkpad X13 Gen 5 (for Selected Models)
101
Base Cover Assembly
101
Wireless WAN Antennas of Thinkpad X13 2-In-1 Gen 5 (for Selected Models)
102
Built-In Battery
102
Pen Charger Cable (for Selected Thinkpad X13 2-In-1 Gen 5 Models)
103
System Board
104
Replace the System Board
105
How to Input the Product Information with Thinkpad System Board Self Repair Tool
107
Power Board and Power Button with or Without Fingerprint Reader
107
Cable Guide for Coin-Cell Battery of Thinkpad X13 Gen 5
108
Cable Guide for Coin-Cell Battery of Thinkpad X13 2-In-1 Gen 5
109
LCD Unit
110
Keyboard Assembly
112
Strip Cover (for Thinkpad X13 2-In-1 Gen 5 Only)
112
LCD Bezel Sheet and LCD Bezel (for Thinkpad X13 Gen 5 Only)
113
LCD Hinges of Thinkpad X13 Gen 5
113
LCD Hinges of Thinkpad X13 2-In-1 Gen 5
114
LCD Panel, LCD Cable and Elastic Adhesive Tapes of Thinkpad X13 Gen 5
115
LCD Panel, LCD Cable and Elastic Adhesive Tapes of Thinkpad X13 2-In-1 Gen 5
117
Camera-And-Microphone Module and Cable of Thinkpad X13 Gen 5 (for Selected Models)
119
Camera-And-Microphone Module and Cable of Thinkpad X13 2-In-1 Gen 5 (for Selected Models)
120
Camera Shutter or Dummy Camera Shutter
121
Wireless LAN Antenna of Thinkpad X13 Gen 5 (for Selected Models)
122
Wireless LAN Antenna Assembly of Thinkpad X13 2-In-1 Gen 5 (for Selected Models)
122
Antenna Locations of Thinkpad X13 Gen 5
123
Antenna Locations of Thinkpad X13 2-In-1 Gen 5
124
LCD Cover Assembly
125
Appendix A. Notices
127
Appendix B. Abbreviation Table
129

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