Lenovo B575e Laptop Hardware Maintenance Manual - Lenovo B575e - Page 3

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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 34 Supervisor password 34 Power management 34 Screen blank mode 34 Sleep mode 34 Hibernation mode 35 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 General guidelines 43 1010 Battery pack 44 1020 Bottom slot cover 44 1030 Hard disk drive 45 1040 Optical drive 47 1050 Memory modules 48 1060 PCI Express Mini Card for wireless LAN . . 49 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 86 Miscellaneous parts 89 ac power adapters 89 Power cords 89 Appendix A. Notices 93 Electronic emissions notices 94 Trademarks 94 © Copyright Lenovo 2012 i

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Contents
About this manual
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iii
Chapter 1. Safety information
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1
General safety
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Electrical safety
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Safety inspection guide
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3
Handling devices that are sensitive to electrostatic
discharge
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3
Grounding requirements
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Safety notices (multilingual translations)
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4
Laser compliance statement (multilingual
translations)
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19
Chapter 2. Important service
information
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27
Strategy for replacing FRUs
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Strategy for replacing a hard disk drive
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Important notice for replacing a system
board
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Important information about replacing RoHS
compliant FRUs
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Chapter 3. General checkout
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29
What to do first
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Power system checkout
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Checking the ac power adapter
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Checking operational charging
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Checking the battery pack
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Chapter 4. Related service
information
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33
Recovering the computer settings
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Passwords
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Power-on password
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Supervisor password
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Power management
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Screen blank mode
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Sleep mode
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Hibernation mode
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Chapter 5. Lenovo B575e
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37
Specifications
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37
Status indicators
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Fn key combinations
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Chapter 6. FRU replacement
notices
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41
Screw notices
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41
Chapter 7. Removing and replacing a
FRU
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43
General guidelines
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1010 Battery pack
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1020 Bottom slot cover
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1030 Hard disk drive
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1040 Optical drive
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1050 Memory modules
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1060 PCI Express Mini Card for wireless LAN
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1070 Backup battery
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1080 Keyboard
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1090 Keyboard bezel
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1100 LED board and power board
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1110 Microphone assembly
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1120 I/O board and RJ45 Ethernet board
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1130 System board assembly
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1140 LCD unit
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1150 Thermal fan assembly
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1160 Speaker assembly
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1170 DC-in sub card and base cover
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70
2010 LCD front bezel
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2020 Integrated camera
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2030 LCD panel, LCD cable, and hinges
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2040 Antenna assembly
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76
Chapter 8. Locations
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79
Front view
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Bottom view
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80
Chapter 9. Parts list
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81
Overall
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LCD FRUs
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84
Keyboard
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86
Miscellaneous parts
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89
ac power adapters
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89
Power cords
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89
Appendix A. Notices
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93
Electronic emissions notices
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94
Trademarks
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94
© Copyright Lenovo 2012
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