Lenovo B575E manual Contents

Page 3

Contents

About this manual. . . . . . . . . . . iii

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) . . . . . . . . . . . . . . . . 19

Chapter 2. Important service

 

information

27

Strategy for replacing FRUs

27

Strategy for replacing a hard disk drive . . .

28

Important notice for replacing a system

 

board

28

Important information about replacing RoHS

 

compliant FRUs

28

Chapter 3. General checkout

29

What to do first

29

Power system checkout

30

Checking the ac power adapter

30

Checking operational charging

31

Checking the battery pack

31

Chapter 4. Related service

 

information

33

Recovering the computer settings

33

Passwords

33

Power-on password

33

Supervisor password

33

Power management

34

Screen blank mode

34

Sleep mode

34

Hibernation mode

34

Chapter 5. Lenovo B575e

37

Specifications

37

Status indicators

38

Fn key combinations

39

Chapter 6. FRU replacement

 

notices

41

Screw notices

41

Chapter 7. Removing and replacing a

 

FRU

43

1010

Battery pack

43

1020

Bottom slot cover

44

1030

Hard disk drive

45

1040

Optical drive

46

1050

Memory modules

47

1060

PCI Express Mini Card for wireless LAN . .

48

1070

Backup battery

50

1080

Keyboard

51

1090

Keyboard bezel

54

1100

LED board and power board

58

1110

Microphone assembly

59

1120

I/O board and RJ45 Ethernet board . . . .

59

1130

System board assembly

63

1140

LCD unit

65

1150

Thermal fan assembly

67

1160

Speaker assembly

69

1170

DC-in sub card and base cover

70

2010

LCD front bezel

72

2020

Integrated camera

74

2030

LCD panel, LCD cable, and hinges . . . .

74

2040

Antenna assembly

76

Chapter 8. Locations

79

Front view

79

Bottom view

80

Chapter 9. Parts list

81

Overall

82

LCD FRUs

84

Keyboard

85

Miscellaneous parts

88

ac power adapters

88

Power cords

88

Appendix A. Notices

93

Electronic emissions notices

94

Trademarks

94

© Copyright Lenovo 2012

i

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Contents Lenovo B575e Hardware Maintenance ManualFirst Edition July Copyright Lenovo Contents Ii Hardware Maintenance Manual About this manual Iv Hardware Maintenance Manual General safety Safety informationElectrical safety Safety inspection guide Grounding requirements Safety notices multilingual translationsSafety information Hardware Maintenance Manual Safety information Perigo Perigo Vorsicht Vorsicht Vorsicht Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Laser compliance statement multilingual translations Hardware Maintenance Manual Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Safety information Hardware Maintenance Manual Important service information Before replacing partsStrategy for replacing FRUs For products shipped after June Strategy for replacing a hard disk driveImportant notice for replacing a system board Important information about replacing RoHS compliant FRUsFollowing are not covered under warranty General checkoutWhat to do first Checking the ac power adapter Power system checkoutChecking operational charging Checking the battery packHardware Maintenance Manual Power-on password Related service informationRecovering the computer settings PasswordsHibernation mode Power managementScreen blank mode Sleep modeRelated service information Hardware Maintenance Manual Specifications Indicator Meaning Status indicatorsKey combination Description Fn key combinationsHardware Maintenance Manual Logic card to plastic FRU replacement noticesScrew notices Plastic to plasticHardware Maintenance Manual Removing and replacing a FRU Battery packRemoval steps of bottom slot cover Bottom slot coverHard disk drive Removal steps of hard disk drive assemblyOptical drive Removal steps of hard disk drive bracketRemoval steps of the optical drive Memory modules Removal steps of memory modules PCI Express Mini Card for wireless LANRemoval steps of PCI Express Mini Card for wireless LAN Backup battery Keyboard Removal steps of keyboard Keyboard will open up slightly Keyboard bezel Remove screws That secure the keyboard bezel Removal steps of keyboard bezelM2 × 5 mm, flat-head, nylon-coated Black Kgfcm Removing and replacing a FRU LED board and power board Removal steps of power boardRemoval steps of LED board Microphone assembly Removal steps of microphone assembly1120 I/O board and RJ45 Ethernet board Removal steps of I/O board Remove the I/O board Removal steps of RJ45 Ethernet board Important notices for handling the system board System board assemblyRemoval steps of system board LCD unit Removal steps of LCD unit When installingThermal fan assembly Removal steps of thermal fan assembly Speaker assembly DC-in sub card and base cover Removal steps of speaker assemblyRemoval steps of DC-in sub card Applying labels to the base cover LCD front bezelRemoval steps of LCD front bezel Integrated camera LCD panel, LCD cable, and hingesRemoval steps of integrated camera Removal steps of LCD panel and hinges Antenna assembly Removal steps of antenna assemblyRemoval steps of LCD cable Removing and replacing a FRU Hardware Maintenance Manual Front view LocationsLenovo B575e bottom view Bottom viewParts list FRU Overall FRU no OverallLA57 HDD Door Assy LCD FRUs FRU Parts list Keyboard Sunrex Parts list Keyboard Chicony Ac power adapters Power cordsMiscellaneous parts Country or region FRU no Parts list 3-pin power cords Volex Country or region FRU no Hardware Maintenance Manual Appendix A. Notices Trademarks Electronic emissions noticesPage Part Number 1P P/N

B575E specifications

The Lenovo B575E is a reliable and cost-effective laptop designed primarily for business users and students who need a dependable device for everyday tasks. It brings a solid mix of performance, portability, and essential features that cater to the needs of individuals on a budget.

At its core, the B575E is powered by AMD's E-series processors, which provide adequate performance for handling basic computing tasks like web browsing, document editing, and multimedia consumption. This entry-level configuration is perfect for users who do not require intensive graphics capabilities or high-end processing power.

One of the standout features of the Lenovo B575E is its 15.6-inch display. The screen boasts a resolution of 1366 x 768 pixels, which while standard, offers decent clarity and brightness for everyday usage. The anti-glare technology reduces reflections and allows users to work comfortably in various lighting conditions.

In terms of memory, the B575E typically comes with 4 GB of RAM, which is expandable for users who require additional multitasking capabilities. With a standard hard drive capacity, users can choose models with up to 500 GB of storage, providing sufficient space for documents, applications, and media files.

The design of the B575E is pragmatic and functional, featuring a sturdy casing that can withstand regular use. Weighing around 5.5 pounds, it is portable enough for users who need to carry their laptops to meetings or classes.

Connectivity options are user-friendly, as the laptop includes USB 2.0 and USB 3.0 ports, HDMI output, and an SD card reader, enabling users to connect various peripherals and external displays easily. The built-in webcam and microphone support video conferencing, a feature that has become increasingly important in today’s remote work and education environments.

The battery life of the Lenovo B575E is commendable, providing several hours of productivity on a single charge, which is essential for users who are frequently on the move.

Overall, the Lenovo B575E stands out as a practical choice for budget-conscious consumers looking for a functional laptop that meets the basic demands of everyday computing without sacrificing performance. With its reliable construction, satisfactory specifications, and essential features, it remains a competitive option in the entry-level laptop market.