Lenovo K2450 Hardware Maintenance Manual - Lenovo K2450 Notebook - 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 Recovery Disc Set 23 Start Recovery Disc (one disc 23 Operating System Recovery Disc (one or more discs 23 Applications and Drivers Recovery Disc (one or more discs 23 Supplemental Recovery Disc 23 Passwords 24 Using passwords 24 Power management 25 Power management 25 Checking the battery status 25 Using the ac power adapter 25 Charging the battery 26 Maximizing the battery life 26 Power-saving modes 26 Sleep mode 26 Hibernation mode 27 Shutting down the computer 27 Lenovo Zhao Yang K2450 28 Specifications 28 Features 28 Specifications 29 Status indicators 30 Special keys and buttons 32 Function key combinations 32 FRU replacement notices 34 Screw notices 34 Removing and replacing an FRU 35 1010 Keyboard 36 1020 Battery pack 38 1030 Dummy card 41 1040 Hard disk drive 42 1050 DIMM 44 1060 PCI Express Mini Card for wireless LAN/WAN and SSD card 45 1070 System board 47 1080 Fan assembly and Heat Sink assembly 51 1090 LCD unit 53 1100 Speaker, base cover, finger printer board, power assembly and LED board... 55 1110 LCD front bezel 58 1120 LCD panel, LCD cable and hinges ... 59 1130 Integrated camera 61 1140 Antenna assembly and LCD cover... 62 Locations 63 Front view 63 Bottom view 64 Left-side view 65 Right-side view 66 Parts list 67 Overall 68 LCD FRUs 72 Keyboard 74 AC adapters 76 Power cords 77 Notices 78 Trademarks 79 iii