Remove The System Board - Lenovo Y540-17 Series Hardware Maintenance Manual

Figure 39. Remove the keyboard transfer board
Refer to "Major FRUs and CRUs" on page 24 to look up details about the following replacement part:
Keyboard transfer board

Remove the system board

Make sure the following FRUs (or CRUs) have been removed.
"Remove the service door" on page 30
"Remove the Solid State Drive (SSD)" on page 30
"Remove the Hard Disk Drive (HDD)" on page 32
"Remove the lower case" on page 35
"Remove the battery pack" on page 36
"Remove the memory modules" on page 39
"Remove the Wi-Fi card" on page 40
"Remove the heat sink" on page 41
"Remove the fans" on page 42
Step 1. Detach the 6 connectors from the system board as follows:
• Power button board connector
• keyboard transfer board connector
• Coin-cell battery connector
• Touchpad button board connector
• Speaker connector
• EDP cable connector
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Hardware Maintenance Manual