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Lenovo IdeaCentre A540-24API Hardware Maintenance Manual
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Chapter
3.
Product overview
Front
1.
Integrated
camera activity
indicator
2. Integrated
microphones (2)
3.
Integrated
camera*
4. Infrared
camera*
5.
Screen
6. Wireless
charging pad**
7.
Internal
speakers
8. Wireless
charging indicator**
*
Either
an
integrated
camera
or
an
infrared
camera
is
provided on
your
computer.
**
for
selected
models
© Copyright
Lenovo 2019
29
34
36
Table of Contents
Default Chapter
3
Table of Contents
3
About this Manual
5
Chapter 1. Important Safety Information
7
General Safety
7
Electrical Safety
8
Safety Inspection Guide
9
Handling Electrostatic Discharge-Sensitive Devices
10
Grounding Requirements
10
Safety Notices (Multi-Lingual Translations)
10
Chapter 2. Important Service Information
33
Strategy for Replacing FRU
33
Strategy for Replacing a Hard Disk Drive or a Solid-State Drive
33
Important Notice for Replacing a System Board
33
How to Use Error Codes
33
Strategy for Replacing FRU for CTO, Special-Bid, and Standard Models
34
Product Definition
34
FRU Identification
34
Chapter 3. Product Overview
35
Front
35
Rear
36
Bottom
37
Chapter 4. Service Checkout and Symptom-To-FRU Index
39
Service Checkout
39
Problem Determination Tips
39
Symptom-To-FRU Index
40
Hard Disk Drive Boot Error
40
Power Supply Problems
41
Beep Symptoms
41
POST Error Codes
42
Miscellaneous Error Conditions
43
Undetermined Problems
45
Chapter 5. Troubleshooting and Recovery
47
Basic Procedure for Resolving Computer Problems
47
Troubleshooting
47
Startup Problems
48
Screen Problems
49
Audio Problems
50
Network Problems
51
Performance Problems
53
Storage Drive Problems
54
CD or DVD Problems
54
Serial Connector Problems
55
Software Problems
55
Recovery
55
Restore System Files and Settings to an Earlier Point
56
Restore Your Files from a Backup
56
Reset Your Computer
56
Use Advanced Options
56
Windows Automatic Recovery
56
Create and Use a Recovery USB Device
56
Update the Device Driver
57
Chapter 6. Hardware Removal and Installation
59
Handling Static-Sensitive Devices
59
Service Tool Kit
59
Major FRU and CRU
60
System Board
62
Removing and Installing Hardware
62
External Options
63
Hinge Cover
63
Computer Back Cover
64
System Board Frame
68
Memory Module
70
System Fan
72
Heat Sink
75
Wi-Fi Card
77
M.2 Ssd
80
Microprocessor
84
System Board
87
Speakers
89
Storage Drive
92
LCD Panel
99
Camera Module
105
Computer Upper Cover
110
Power Switch Board
113
Subwoofer
115
Wireless Charging Module
118
DC-In Board
122
System Stand
124
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Lenovo IdeaCentre A540-24API Specifications
General
Brand
Lenovo
Model
IdeaCentre A540-24API
Category
Desktop
Language
English
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