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Lenovo A540 User Manual
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L
enovo
A540/A740Har
dwar
e
Maint
enance
Manual
Machine
T
ypes:
F0AN
[A540];F0AM
[A740]
2
Table of Contents
Default Chapter
5
Table of Contents
5
Chapter 1. About this Manual
7
Important Safety Information
7
Chapter 2. Safety Information
9
General Safety
9
Electrical Safety
9
Safety Inspection Guide
11
Handling Electrostatic Discharge-Sensitive Devices
11
Grounding Requirements
12
Safety Notices
12
Chapter 3. General Information
15
Specifications
15
Chapter 4. General Checkout
17
Chapter 5. Using the Setup Utility
19
Starting the Lenovo BIOS Setup Utility Program
19
Viewing and Changing Settings
19
Using Passwords
19
Enabling or Disabling a Device
21
Selecting a Startup Device
22
Exiting the Lenovo BIOS Setup Utility Program
23
Chapter 6. Symptom-To-FRU Index
25
Hard Disk Drive Boot Error
25
Power Supply Problems
25
POST Error Codes
26
Undetermined Problems
26
Chapter 7. Replacing Hardware
27
General Information
27
Pre-Disassembly
27
Replacing the Keyboard and Mouse
28
Replacing the Power Cord or Power Adapter
28
Removing the Base Cover
29
Replacing the Hard Disk Drive
30
Replacing a Memory Module
32
Replacing the System Fan
33
Replacing the Heat-Sink
34
Replacing the Speaker System
35
Replacing the Motherboard
36
Removing the Hinge from the Chassis
37
Removing the Rear Cover
38
Replacing the Transform Board
41
Replacing the Wi-Fi Card
42
Replacing the Power Switch Board
43
Replacing the NFC Module
44
Replacing the Camera
45
Replacing the LED Panel
46
A540 FRU Lists
48
A740 FRU Lists
52
Chapter 8. General Information
59
Additional Service Information
59
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Lenovo A540 Specifications
General
Ethernet
Gigabit Ethernet
Processor
Intel Core i3/i5/i7
Storage
Up to 2TB HDD
Operating System
Windows 10
USB Ports
2 x USB 2.0
HDMI Port
Yes
Wireless
Wi-Fi 802.11
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