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E41-55
Lenovo E41-55 Hardware Maintenance Manual
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Lenovo
E41-55
Hardware
Maintenance
Manual
2
Table of Contents
Table of Contents
3
Default Chapter
5
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. General Checkout
25
What to Do First
25
Checking the Ac Power Adapter
26
Checking the Battery and Operational Charging
26
Chapter 3. Locating Computer Controls, Connectors, and Indicators
29
Front
29
Base
30
Left
31
Right
32
Chapter 4. FRU Replacement Notices
33
Service Tool Kit
33
Screw Notices
33
Chapter 5. Identifying Frus (Crus)
35
Major Frus and Crus
35
Chapter 6. Removing a FRU or CRU
39
General Guidelines
39
Remove the Lower Case
39
Remove the Hard Disk Drive and Hard Disk Drive Bracket
40
Remove the Memory Module Bracket and Memory DIMM
41
Remove the M.2 2280 Solid-State Drive (for Selected Models)
42
Remove the M.2 2242 Solid-State Drive (for Selected Models)
42
Remove the Heat Sink
43
Remove the Thermal Fan
44
Remove the CMOS Battery
44
Remove the Built in Battery
45
Remove the Fingerprint Reader Cable, Fingerprint Reader and Fingerprint Reader Bracket
46
Remove the Wireless LAN Card
47
Remove the Speakers
48
Remove the DC-In Cable
48
Remove the LCD Unit
49
Remove the Lower Case
49
Remove the Built in Battery
49
Remove the System Board
51
Remove the LCD Unit
51
Remove the Upper Case (with Keyboard and Touch Pad)
53
Disassemble the LCD Module
54
Remove the LCD Bezel
54
Remove the LCD Panel
54
Remove the LCD Panel
55
Remove the Hinges and LCD Cable
56
Remove the Camera Cable
57
Remove the Camera Board
58
Remove the LCD Cover
59
Trademarks
61
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Lenovo E41-55 Specifications
General
RAM
4GB DDR4
Storage
1TB HDD
Display
14" HD (1366 x 768)
Operating System
Windows 10 Home
Graphics
AMD Radeon R4 Graphics
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