Contents

About this manual. . . . . . . . . . . . v

Chapter 1. Safety information . . . . . 1

General safety . . . . . . . . . . . . . . . . 1 Electrical safety . . . . . . . . . . . . . . . 2 Safety inspection guide . . . . . . . . . . . . 3

Handling devices that are sensitive to electrostatic discharge. . . . . . . . . . . . . . . . . . 3

Grounding requirements . . . . . . . . . . . . 4 Safety notices (multilingual translations) . . . . . . 4

Laser compliance statement (multilingual

translations) . . . . . . . . . . . . . . . . 17

Chapter 2. Important service

 

information

23

Strategy for replacing FRUs

23

Strategy for replacing a hard disk drive . . .

24

Important notice for replacing a system

 

board

24

How to use error message

24

Strategy for replacing FRUs for CTO, CMV, and

 

GAV

24

Product definition

24

FRU identification for CTO, CMV, and GAV

 

products

25

Chapter 3. General checkout

27

What to do first

27

Checkout guide

28

Diagnostics using PC-Doctor for DOS. . . .

28

Lenovo ThinkVantage Toolbox

30

FRU tests

31

Power system checkout

32

Checking the ac adapter

33

Checking operational charging

33

Checking the battery pack

33

Checking the backup battery

34

Chapter 4. Related service

 

information

35

Restoring the factory contents by using Recovery

 

Disc Set

35

Passwords

36

Power-on password

36

Hard-disk password

36

Supervisor password

37

How to remove the power-on password . . .

37

How to remove the hard-disk password . . .

37

Power management

38

Screen blank mode

38

Sleep (standby) mode

38

Hibernation mode

39

Symptom-to-FRU index

39

Numeric error codes

40

Error messages

41

Beep symptoms

42

No-beep symptoms

43

LCD-related symptoms

43

Intermittent problems

43

Undetermined problems

44

Chapter 5. Installing and configuring

 

RAID

45

Supported RAID configurations

45

Configuring the system UEFI BIOS to enable

 

embedded SATA RAID functionality

45

Creating RAID volumes

45

Deleting RAID volumes

46

Chapter 6. Status indicators

47

Chapter 7. Fn key combinations . . .

51

Chapter 8. FRU replacement

 

notices

55

Screw notices

55

Retaining serial numbers

56

Restoring the serial number of the system

 

unit

56

Retaining the UUID

56

Reading or writing the ECA information . . .

57

Chapter 9. Removing and replacing a

 

FRU

59

Before servicing ThinkPad T520, T520i, and

 

W520

60

1010

Battery pack

60

1020

Serial Ultrabay Enhanced device or travel

 

bezel

61

1030

DIMM slot cover

62

1040

DIMM (bottom slot)

63

1050

Hard disk drive slot cover, hard disk drive

 

(HDD) and HDD rubber rails or solid state drive

 

(SSD) and storage converter

65

1060

Keyboard

67

1070

DIMM (upper slot)

70

1080

PCI Express Mini Card for wireless LAN . .

71

© Copyright Lenovo 2011

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Lenovo W520, 4284WW9PC10B371, T520i manual Contents

T520, W520, 4284WW9PC10B371, T520i specifications

The Lenovo T520i is a robust business laptop that caters to professionals seeking reliability and performance. Part of Lenovo's ThinkPad series, specifically the model number 4284WW9PC10B371, it is designed for multitasking efficiency and mobility.

One of the defining features of the T520i is its impressive performance capabilities. It is equipped with Intel's second-generation Core processors, ranging from i5 to i7, which provide ample power for demanding applications and multitasking scenarios. This model supports up to 16GB of RAM, ensuring smooth operation even with multiple applications running simultaneously.

The T520i features a 15.6-inch high-definition display, offering users a resolution of 1366 x 768 pixels. For those who require superior screen clarity and vibrant color reproduction, the laptop can be upgraded to a Full HD (1920 x 1080) display option. This attribute is especially valuable for professionals working in design or media fields who need precise visuals.

Another characteristic that sets the T520i apart is its durable build quality. As a ThinkPad, it has undergone rigorous testing to meet military-grade standards for durability and reliability. The spill-resistant keyboard and robust chassis are designed to withstand the rigors of everyday use, making it ideal for professionals on the go.

Storage options for the T520i are versatile, with configurations available for traditional hard drives and solid-state drives (SSD). The SSD option not only enhances the overall speed of the system but also improves boot times and application loading, significantly contributing to productivity.

Connectivity options on the T520i are comprehensive. It comes with multiple USB ports, including USB 3.0 for fast data transfer. Additionally, integrated features such as a Gigabit Ethernet port, VGA output for external monitors, and optional 4G LTE connectivity ensure seamless communication and access to networks.

The laptop also boasts Intel HD Graphics, offering sufficient power for everyday tasks, video playback, and light gaming. Furthermore, the inclusion of technologies such as Bluetooth and an integrated webcam enriches user experience through enhanced connectivity and multimedia capabilities.

In conclusion, the Lenovo T520i, with its powerful processors, impressive display options, and rugged design, is a capable choice for professionals who require a reliable, high-performance laptop. Ideal for both business and personal use, it exemplifies Lenovo’s commitment to quality and innovation in the laptop market.