• Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or
composite.
• Avoid rough handling of any kind.
• At every point in the process, be sure not to drop or stack the system board.
• If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a
corrugated conductive material.
For access, remove these FRUs in order:
• “Removing the nano-SIM card and nano-SIM-card tray” on page 62
• “1010 Keyboard” on page 63
Note: The keyboard removal tool (product part number: 01LX856) is needed for removing the keyboard.
You can purchase it as a separate FRU at:
https://support.lenovo.com/partslookup.
• “1020 Base cover assembly” on page 67
• “1030 Wireless LAN card” on page 69
• “1040 Wireless WAN card ” on page 69
• “1050 M.2 solid-state drive” on page 70
• “1060 Memory module” on page 71
• “1100 Built-in battery” on page 74
• “1080 Thermal fan assembly” on page 72
• “1070 Ethernet connector drop-down door” on page 72
The following component
a CPU soldered on the top side of the system board is extremely sensitive. When
you service the system board, avoid any kind of rough handling.
86 T480s Hardware Maintenance Manual
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