System Board - Lenovo ThinkStation P620 Hardware Maintenance Manual

System board

Prerequisite
Before you start, read Chapter 1 "Important safety information" on page 1 and print the following
instructions.
CAUTION:
Avoid contact with hot components inside the computer. During operation, some components
become hot enough to burn the skin. Before you open the computer cover, turn off the computer,
disconnect power, and wait approximately 10 minutes for the components to cool.
For access, do the following:
1. Remove the computer cover. See "Computer cover" on page 58.
2. Lay the computer on its side for easier access to the system board.
3. Remove the following parts if any:
• "Front panel I/O cage" on page 77
• "PCIe card" on page 93
• "Full-length PCIe card" on page 96
• "M.2 solid-state drive" on page 86
• "Power supply assembly" on page 92
• "Memory module active cooler and duct" on page 100
• "Memory module" on page 100
• "Coin-cell battery" on page 102
• "Wi-Fi units" on page 104
• "Heat-sink-and-fan assembly" on page 106.
• "Microprocessor" on page 107.
4. Record the cable routing and cable connections and then disconnect all cables from the system board.
See "System board" on page 53.
.
Chapter 7 Hardware removal and installation
111