Lenovo S41-70 Laptop Hardware Maintenance Manual - Lenovo S41-70, U41-70 - Page 3

Contents About this manual iv Safety information 1 General safety 2 Electrical safety 3 Safety inspection guide 5 Handling devices that are sensitive to electrostatic discharge 6 Grounding requirements 6 Safety notices: multilingual translations.......... 7 Laser compliance statement 14 Important service information 16 Strategy for replacing FRUs 16 Strategy for replacing a hard disk drive 17 Important notice for replacing a system board 17 Important information about replacing RoHS compliant FRUs 18 General checkout 19 What to do first 20 Power system checkout 21 Checking the AC adapter 21 Checking operational charging 21 Related service information 23 Restoring the factory contents by using OneKey Recovery 23 Restore of factory default 23 Passwords 24 Power-on password 24 Hard-disk password 24 Supervisor password 24 Power management 25 Screen blank state 25 Putting the computer to sleep or shutting it down 25 Putting your computer to sleep 25 Shutting down the computer 26 Lenovo S41/U41 28 Specifications 28 Status indicators 30 Fn key combinations 31 FRU replacement notices 32 Screw notices 32 Removing and replacing an FRU 33 1010 Base cover 34 1020 Battery pack 36 1030 Hard disk drive 38 1040 PCI Express Mini Card for wireless LAN 40 1050 DIMM 42 1060 Fan assembly and heat sink assembly....43 1070 LCD unit 44 1080 System board 46 1090 Speakers 49 1100 Power assembly, Touchpad module and IO board 50 1110 LCD front bezel 52 1120 LCD panel, LCD cable and hinges...........54 1130 Integrated camera 56 1140 Antenna assembly and LCD cover...........57 Locations 58 Front view and right-side view 58 Bottom and Left-side view 59 Parts list 60 Overall 61 LCD FRUs 66 Keyboard 68 Miscellaneous parts 72 Screw 72 AC adapters 73 Power cords 74 Notices 77 Trademarks 78 iii