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20KF
Lenovo 20KF User Manual
110 pages
Manual
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X280
Hardware
Maintenance
Manual
2
Table of Contents
default chapter
3
Table of Contents
3
About this Manual
5
Chapter 1. Safety Information
7
General Safety
7
Electrical Safety
7
Safety Inspection Guide
8
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
Strategy for Replacing an M.2 Solid-State Drive
27
Important Notice for Replacing a System Board
28
How to Use Error Message
28
Strategy for Replacing Frus for CTO, Special-Bid, and Standard Models
28
Product Definition
28
FRU Identification
29
Chapter 3. General Checkout
31
What to Do First
31
Checkout Guide
32
Diagnosing Problems
32
Quick Test Programs
33
UEFI Diagnostic Program
33
Bootable Diagnostic Programs
33
Power System Checkout
34
Checking the Ac Power Adapter
34
Checking the Battery and Operational Charging
35
Checking the Coin-Cell Battery
35
Chapter 4. Related Service Information
37
Recovery Information
37
Recovery Information for the Windows 10 Operating System
37
Passwords
39
Power-On Password
39
Hard Disk Password
39
Supervisor Password
39
How to Remove the Power-On Password
40
How to Remove the Hard Disk Password
40
Power Management
41
Sleep Mode
41
Hibernation Mode
41
Symptom-To-FRU Index
42
Numeric Error Codes
42
Error Messages
44
Beep Errors
44
LCD-Related Symptoms
45
Intermittent Problems
46
Undetermined Problems
46
Chapter 5. Special Keys
49
Chapter 6. Locations
51
Computer Controls, Connectors, and Indicators
51
Front View
51
Left-Side View
52
Right-Side View
52
Rear View
52
Bottom View
53
Status Indicators
53
Locating Frus and Crus
55
Major Frus
56
LCD Frus
59
Miscellaneous Parts and Other Frus
61
Connector and Cable Guide
61
Looking up FRU Information
64
Chapter 7. FRU Replacement Notices
65
Common Service Tools
65
Screw Notices
65
Retaining Serial Numbers
66
Restoring the Serial Number of the System Unit
66
Retaining the UUID
67
Reading or Writing the ECA Information
68
Chapter 8. Removing or Replacing a FRU
69
General Guidelines
69
Before Servicing the Computer
70
Removing External Devices
70
Disabling the Built-In Battery
70
Removing the Nano-SIM Card
70
Removing the Microsd Card
70
Removing a Major FRU
71
1000 Keyboard
71
1010 Base Cover Assembly
76
1020 M.2 Solid-State Drive and Thermal Rubber for M.2 Solid-State Drive
77
1030 Wireless-LAN Card
78
1040 Wireless-WAN Card
79
1050 Built-In Battery
80
1060 Thermal Fan Assembly
82
1070 Speaker Assembly
83
1080 Coin-Cell Battery
83
1090 Trackpad Cable
84
1100 Trackpad Assembly and Trackpad Insulation Tape
85
1110 NFC Module with NFC Support Bracket
86
1120 Smart Card Reader
87
1130 Nano-SIM-Card and Microsd-Card Tray
88
1140 Fingerprint Reader Assembly and Fingerprint Reader Cable
88
1150 System Board Assembly and Cable Holder
89
1160 Side USB Connector
91
1170 Power Button Card and Power-Button-Card Cable
92
1180 LCD Unit
93
1190 Keyboard Bezel Assembly
95
Removing an LCD FRU
96
2010 LCD-Bezel Sheet, Thinkshutter, and LCD-Bezel Frame
96
2020 Hinges
98
2030 LCD Panel Assembly and LCD Cable
99
2040 Camera/Microphone Card
100
2050 Camera/Led Cable
102
2060 Antenna Kit
104
Appendix A. Notices
107
Electronic Emissions Notices
108
Trademarks
108
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Lenovo 20KF Specifications
General
RAM
DDR4
Storage
SSD
Display
1920x1080
Operating System
Windows 10
Graphics
Intel
Bluetooth
Bluetooth
Ports
HDMI, Ethernet
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