Fan - Lenovo 12B800DDGE Hardware Maintenance Manual

• Remove the M.2 solid-state drive and thermal pad. See "M.2 solid-state drive and thermal pad" on
page 55.
• Remove the Wi-Fi card. See "Wi-Fi card" on page 57.
• Remove the memory module and thermal pad. See "Memory module and shielding" on page 58.
• Remove the heat sink and gaskets. See "Heat sink and gaskets" on page 60.
2. Record the cable routing and cable connections, and then disconnect all cables from the system board.
See "System board" on page 48.
Notes:
• Each computer has a unique Vital Product Data (VPD) code stored in the nonvolatile memory on the
system board. After you replace the system board, the VPD must be updated.
Removal steps

Fan

Prerequisite
Before you start, read Generic Safety and Compliance Notices, and print the following instructions.
Before you open the computer cover, turn off the computer and wait several minutes until the computer is
cool.
For access, remove the following parts in order:
• Remove the computer stand. See "Computer stand" on page 49.
• Remove the rear cover. See "Rear cover" on page 52.
• Remove the system board shielding. See "System board shielding" on page 54.
• Remove the M.2 solid-state drive and thermal pad. See "M.2 solid-state drive and thermal pad" on page
55.
• Remove the Wi-Fi card. See "Wi-Fi card" on page 57.
• Remove the memory module and thermal pad. See "Memory module and shielding" on page 58.
• Remove the heat sink and gaskets. See "Heat sink and gaskets" on page 60.
• Remove the system board. See "System board" on page 63.
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