Lenovo ThinkCentre Edge 72 Hardware Maintenance Manual (HMM) for ThinkCentre E - Page 4
Replacing FRUs Machine - memory
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Locating connectors on the rear of your computer 75 Locating major FRUs and CRUs 76 Looking up FRU information 78 Locating parts on the system board . . . . 79 Locating internal drives 80 Chapter 9. Replacing FRUs (Machine Types: 3484, 3485, and 3492) . . . . . 81 Handling static-sensitive devices 81 Installing or replacing hardware 81 Removing the computer cover 82 Removing and reinstalling the front bezel . . 83 Installing or replacing a PCI card 84 Replacing the battery 87 Installing or replacing a memory module . . . 88 Replacing the optical drive 90 Replacing the heat sink and fan assembly . . 92 Replacing the power supply assembly . . . 94 Replacing the microprocessor 95 Replacing the system board 98 Replacing the primary hard disk drive . . . . 100 Replacing the front audio and USB assembly 102 Replacing the WiFi units 103 Installing or removing the rear WiFi antenna . . 109 Installing or removing the front WiFi antenna 110 Completing the parts replacement . . . . . 112 Chapter 10. Replacing FRUs (Machine Types: 3493, 3496, and 3497) . . . . 115 Handling static-sensitive devices 115 Installing or replacing hardware 115 Removing the computer cover 116 Removing and reinstalling the front bezel . . 117 Accessing the system board components and drives 118 Installing or replacing a PCI card 119 Installing or replacing a memory module . . . 121 Replacing the battery 122 Replacing the hard disk drive 123 Replacing the optical drive 125 Replacing the power supply assembly . . . 129 Replacing the heat sink and fan assembly . . 133 Replacing the microprocessor 136 Replacing the system board 139 Replacing the system fan assembly . . . . 141 Replacing the front audio and USB assembly 143 Replacing the WiFi units 144 Installing or removing the rear WiFi antenna . . 149 Installing or removing the front WiFi antenna 151 Replacing the keyboard or mouse . . . . . 153 Completing the parts replacement . . . . . 154 Chapter 11. Additional service information 157 Security features 157 Hardware-controlled passwords 157 Operating system password 157 Vital Product Data 157 BIOS levels 157 Flash update procedures 157 Updating (flashing) the BIOS from a disc. . . 158 Updating (flashing) the BIOS from your operating system 159 Recovering from a POST and BIOS update failure 159 Power management 160 Advanced Configuration and Power Interface (ACPI) BIOS 160 Automatic Power-on features 160 Appendix A. Notices 161 Television output notice 162 European conformance CE mark 162 Trademarks 162 Index 163 ii ThinkCentre Hardware Maintenance Manual
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