Remove The System Board - Lenovo IdeaPad S540-14 Series Hardware Maintenance Manual

Figure 36. Use a prying tool to detach the dc-in cable from the upper case
Step 3. Remove the dc-in cable.
Figure 37. Remove the dc-in cable

Remove the system board

Make sure the following FRUs (or CRUs) have been removed.
"Remove the lower case" on page 31
"Remove the battery pack" on page 32
"Remove the Wi-Fi card" on page 34
"Remove the heat sink and fan assembly" on page 36
"Remove the memory module" on page 38
"Remove the M.2 solid-state drive" on page 39
"Remove the speakers" on page 40
"Remove the fingerprint board" on page 41
"Remove the touchpad assembly" on page 42
"Remove the dc-in cable" on page 47
Step 1. Disconnect the cable.
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Hardware Maintenance Manual