Lenovo K4450 Laptop Hardware Maintenance Manual - Lenovo K4450 and K4450A - Page 3
Contents, FRU replacement
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Contents About this manual iii Chapter 1. Safety information . . . . . 1 General safety 1 Electrical safety 1 Safety inspection guide 3 Handling devices that are sensitive to electrostatic discharge 3 Grounding requirements 4 Safety notices (multilingual translations) . . . . . 4 Chapter 2. General checkout . . . . . 21 What to do first 21 Power system checkout 22 Checking the ac power adapter 22 Checking operational charging 23 Checking the battery pack 23 Chapter 3. Important service information 25 Recovering the computer settings 25 Using passwords 25 Power management 26 Screen blank mode 26 Sleep mode 26 Hibernation mode 27 Chapter 4. Status indicators . . . . . 29 Chapter 5. Fn key combinations . . . 31 Chapter 6. Locations 33 Locating computer controls, connectors, and indicators 33 Front view 33 Bottom view 34 Locating FRUs and CRUs 34 Major FRUs and CRUs 35 LCD FRUs and CRUs 37 Part numbers for orderable FRUs and CRUs . 38 Chapter 7. FRU replacement notices 45 Important notice for replacing FRUs 45 Screw notices 46 Chapter 8. Removing or replacing a FRU 47 General guidelines 47 1010 Battery pack 48 1020 Bottom slot cover 48 1030 Memory modules 49 1040 Hard disk drive assembly 51 1050 PCI Express Mini Card for wireless LAN . . 52 1060 mSATA solid-state drive 53 1070 Backup battery 54 1080 Keyboard 55 1090 Keyboard bezel 57 1110 Fingerprint board bracket and fingerprint board with cable 60 1120 Power board 61 1130 Media card reader slot board 61 1140 System board assembly 63 1150 Thermal module assembly 66 1160 Speakers, LCD unit and base cover . . . . 68 1170 DC-in connector 72 2010 LCD front bezel 73 2020 Camera and microphone board 73 2030 LCD panel, LCD cable, and hinges . . . . 74 2040 Antenna assembly and LCD rear cover . . . 76 Appendix A. Notices 79 Trademarks 80 © Copyright Lenovo 2014 i
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