Remove The System Board, The Usb Board Cable And The Fingerprint Board Cable - Lenovo 20V30007IX Hardware Maintenance Manual

Figure 23. Disconnect the RTC battery cable from the system board and remove the RTC battery
Go to
https://support.lenovo.com/partslookup
part:
RTC battery
Remove the system board, the USB board cable and the fingerprint
board cable
Make sure the following FRUs (or CRUs) have been removed.
"Remove the lower case" on page 28
"Remove the battery pack" on page 29
"Remove the solid-state drive (SSD)" on page 30
"Remove the Wi-Fi card" on page 30
"Remove the memory module" on page 31
"Remove the heat sink" on page 32
"Remove the fan" on page 33
Step 1. Disconnect cables connected to the system board and peel off the tape.
40
Hardware Maintenance Manual
to look up the Lenovo part number of the following replacement