Lenovo ThinkCentre M70a Gen 2 Hardware Maintenance Manual page 110

• "Hard disk drive and bracket" on page 77.
• "M.2 solid-state drive" on page 81.
• "Memory module" on page 85.
• "System fan" on page 88.
• "Heat sink" on page 89.
• "Microprocessor" on page 94.
• "Serial connector module" on page 94.
• "Cable cover" on page 96.
• "Wi-Fi card" on page 98.
• "Card reader" on page 102.
2. Record the cable routing and cable connections, and then disconnect all cables from the system board.
See "System board" on page 62.
Replacement procedure
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.
M70a Gen 2
104
M70a Gen 2 and M90a Gen 2 Hardware Maintenance Manual