Lenovo 21RK0040GE Manuals

Manuals and User Guides for Lenovo 21RK0040GE. We have 1 Lenovo 21RK0040GE manual available for free PDF download: Hardware Maintenance Manual

Lenovo 21RK0040GE Hardware Maintenance Manual (110 pages)

Brand: Lenovo | Category: Laptop | Size: 49 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 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
No-Beep Symptoms
41
LCD-Related Symptoms
42
Intermittent Problems
43
Undetermined Problems
43
Lenovo Memory Self Repair (for Intel Models Only)
44
Chapter 5. Special Keys
45
Chapter 6. Locations
47
Locating Computer Controls and Connectors
47
Front
47
Left and Right
49
Bottom
50
Locating Frus and Crus
51
Major Frus and Crus
52
LCD Frus and Crus
55
Miscellaneous Parts
56
Connector and Cable Guide
56
Looking up FRU Information
59
Chapter 7. FRU Replacement Notices
61
Service Tool Kit
61
Screw Notices
61
Retaining Serial Numbers
62
Restoring the Serial Number of the System Unit
62
Retaining the UUID
63
Reading or Writing the ECA Information
64
Chapter 8. Removing or Replacing a FRU
65
General Guidelines
65
Before Servicing the Computer
65
Disable Fast Startup and the Built-In Battery
65
Removing the Nano-SIM Card and Nano-SIM-Card Tray (for Selected Models)
66
Base Cover Assembly
66
Applying Labels to the Base Cover Assembly
68
Built-In Battery
69
Coin-Cell Battery
70
Fingerprint Reader Cable (for Selected Models)
71
M.2 Solid-State Drive and M.2 Solid-State Drive Bracket
72
For Intel Models
73
For AMD Models
73
NFC Module (for Selected Models)
74
System Board I/O Bracket
74
Thermal Fan Assembly
75
Wireless WAN Module and Wireless WAN Module Bracket (for Selected Models)
76
For 4G Models
76
For 5G Models
77
USB I/O Board
78
Power Button Assembly
79
Wireless WAN Antenna Assembly (for Selected Models)
79
Smart Card Reader-Trackpad-NFC Cable (for Selected Models)
81
Smart Card Reader (for Selected Models)
82
Dummy Smart Card Reader (for Selected Models)
83
Speaker Assembly
84
Step Screw (Quantity)
84
Trackpad
87
System Board
90
Replace the System Board
90
For Access, Remove These Frus in Order
90
Base Cover Assembly
90
Wireless WAN Module and Wireless WAN Module Bracket (for Selected Models)
90
Step Screw (Quantity)
91
Color Torque
91
Color
91
(1.85 Kgf-CM)
91
How to Input the Product Information with Thinkpad System Board Self Repair Tool
92
LCD Unit
92
Removing or Replacing a FRU
93
Keyboard Assembly
95
LCD Bezel
96
Strip Cover and LCD Hinges
96
LCD Panel, LCD Cable and Elastic Adhesive Tapes
98
Camera Shutter or Dummy Camera Shutter
100
Camera-And-Microphone Module and Cable (for Selected Models)
100
Wireless LAN Antenna Assembly
101
Antenna Locations
102
LCD Cover Assembly
103
Appendix A. Notices
105
Appendix B. Abbreviation Table
107

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