Lenovo Z40-70 Laptop Hardware Maintenance Manual - Lenovo G40-30, G40-45, G40- - 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 Checking the battery pack 22 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 Administrator 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 25 Lenovo G40-30/G40-45/G40-70/G40-70m/ Z40-70/Z40-75 26 Specifications 26 Status indicators 29 Hotkeys 30 FRU replacement notices 31 Screw notices 31 Removing and replacing an FRU 32 1010 Battery pack 33 1020 Base cover 34 1030 Optical drive 36 1040 Hard disk drive 37 1050 PCI Express Mini Card for wireless LAN 39 1060 DIMM 41 1070 Fan assembly 42 1080 Keyboard 44 1090 Keyboard bezel 47 1100 USB&audio board 50 1110 System board 52 1120 Heat sink assembly 55 1130 Speakers and DC-in cable 56 1140 LCD unit 58 1150 LCD front bezel, LCD panel, and hinges 60 1160 Camera 63 1170 LCD cable and antenna assembly............65 Locations 66 Front view and right-side view 66 Bottom and Left-side view 67 Parts list 68 Overall 69 LCD FRUs 77 Keyboard 79 Miscellaneous parts 81 AC adapters 82 Screw 82 Power cords 83 Notices 86 Trademarks 87 iii