Lenovo 30G1003QGE Hardware Maintenance Manual

The heat-sink-and-fan assembly and microprocessor might be hot. Before you open the computer cover,turn off the computer and wait for several minutes until the computer is cool.For access, remove the following parts in order:1. “Power adapter and power cord” on page 522. “Chassis” on page 54.3. “Hard disk drive” on page 564. “M.2 solid-state drive thermal kit” on page 585. “M.2 solid-state drive” on page 596. “System Fan” on page 607. “Memory module” on page 628. “Heat sink” on page 659. “PCI-Express card” on page 6710. “Internal speaker” on page 7011. “Wi-Fi card and Wi-Fi card shield” on page 7112. “Front Wi-Fi antenna” on page 7213. “External Wi-Fi antenna” on page 7214. “Rear Wi-Fi antenna cable” on page 7315. “Microprocessor” on page 73Notes:• Each computer has a unique Vital Product Data (VPD) code that is stored in the nonvolatile memory on thesystem board. After you replace the system board, the VPD must be updated.• Your microprocessor sockets and socket covers might look slightly different from the illustrations in thistopic.• Do not touch the pins on the microprocessor socket or the gold contacts on the microprocessor.Chapter 7. Hardware removal and installation 75