Lenovo N20 Chromebook Hardware Maintenance Manual - Lenovo N20 Chromebook - Page 45
Remove the system board and the I/O board, andtheI/Oboard
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Refer to Table 3 "Part numbers for FRUs (CRUs)" on page 24 to look up the Lenovo part numbers of replacement speakers. Remove the system board and the I/O board Make sure the following FRUs (CRUs) have been removed: "Remove the keyboard" on page 29 "Remove the upper case" on page 31 "Remove the WLAN & Bluetooth combo module" on page 33 "Remove the LCD module" on page 34 "Remove the dc-in connector" on page 35 "Remove the battery pack" on page 37 "Remove the speakers" on page 38 Step 1. Unplug the coin-cell battery from the system board 1 . a Figure 22. Unplug the coin-cell battery Step 2. Remove the system board 2 and the I/O board 3 . b c Figure 23. Remove the system board and the I/O board Refer to Table 3 "Part numbers for FRUs (CRUs)" on page 24 to look up the Lenovo part numbers of the following replacement parts: System board I/O board Base cover (with coin-cell battery) Chapter 4. Removing a FRU or CRU 39
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