Lenovo ThinkCentre M70a Gen 3 Hardware Maintenance Manual page 87

• "System board shield" on page 61.
• "VESA mount bracket" on page 62.
• "Heat sink" on page 67.
• "System fan" on page 70.
• "Memory module" on page 71.
• "Wi-Fi card" on page 72.
• "M.2 solid-state drive" on page 75.
• "SD card reader board" on page 76.
• "Microprocessor" on page 79.
2. Record the cable routing and cable connections, and then disconnect all cables from the system board.
See "System board" on page 56.
Notes:
• Handle the system board carefully by its edges.
• The failing system board must be returned with a microprocessor socket cover to protect the pins during
shipping and handling.
• 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.
• Your microprocessor sockets and socket covers might look slightly different from the illustrations in this
topic.
• Do not touch the pins on the microprocessor socket or the gold contacts on the microprocessor.
Removal steps
.
Chapter 6 Hardware removal and installation
81