Lenovo L420 Laptop User Manual


 
Table 20. Removal steps of palm rest assembly with cables (continued)
Note: In models with the ngerprint reader, the sensor is attached to the palm rest FRU. If the ngerprint reader is
defective, you can remove the ngerprint reader by referring to step 8 as shown in the following gure.
5
6
7
6
8
7
When installing: Make sure that all the cables are attached rmly to the system board.
1130 PCI Express Mini Card for wireless LAN
For access, remove these FRUs in order:
“1010 Battery pack” on page 57
“1030 Optical drive or travel cover” on page 60
“1120 Palm rest assembly with cables” on page 74
Table 21. Removal steps of PCI Express Mini Card for wireless LAN
In step 1a and 1b , unplug the jacks by using the removal tool antenna RF connector (P/N: 08K7159) or pick the
connectors with your ngers and gently unplug them in the direction of the arrows.
78 Hardware Maintenance Manual