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Manuals and User Guides for Lenovo 20RK. We have
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Lenovo 20RK manual available for free PDF download: Hardware Maintenance Manual
Lenovo 20RK Hardware Maintenance Manual (75 pages)
Brand:
Lenovo
| Category:
Laptop
| Size: 24.04 MB
Table of Contents
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
27
Strategy for Replacing Frus
27
Important Notice for Replacing a System Board
27
How to Use Error Message
28
Strategy for Replacing Frus for CTO, Special Bid Model, and Standard Models
28
Product Definition
28
FRU Identification
28
Chapter 3. General Checkout
29
What to Do First
29
Checkout Guide
30
Diagnosing Problems
30
Quick Test Programs
30
UEFI Diagnostic Program
31
Bootable Diagnostic Programs
31
Power System Checkout
32
Checking the Ac Power Adapter
32
Checking the Built-In Battery and Operational Charging
33
Chapter 4. Related Service Information
35
Windows Recovery Apps
35
Resetting Your Computer
35
Recovering Your Operating System if Windows 10 Fails to Start
35
Creating and Using a Recovery USB Drive
35
Lenovo Factory Recovery USB Key
36
Using Passwords
36
Symptom-To-FRU Index
37
Numeric Error Codes
38
Intermittent Problems
38
Undetermined Problems
39
Chapter 5. Locations
41
Overview
41
Locating Frus and Crus
41
Major Frus and Crus
42
Other Parts
44
Looking up FRU Information
44
Chapter 6. FRU Replacement Notices
45
Service Tool Kit
45
Screw Notices
45
Retaining Serial Numbers
46
Chapter 7. Removing or Replacing a FRU
47
General Guidelines
47
Before Servicing the Computer
48
Disabling the Built-In Battery
48
Removing the Nano-SIM-Card Tray
48
1010 Folio Cover Set
49
1020 Smart Glass and Adhesive Tapes
53
1030 Access Door
55
1040 Support Bracket
55
1050 System Board Assembly
56
1060 Thermal Sub-Spreader
61
1070 M.2 Solid-State Drive
62
1080 Wireless WAN Card
63
1090 USB-C Sub Cards and USB-C Sub Card Cable
64
1110 OLED Assembly with Frame Cover and Miscellaneous Parts
66
Appendix A. Notices
69
Appendix B. Abbreviation and Acronym Table
71
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