3-12 Machine Maintenance ProceduresCAUTION:!Keyboard FPC (Flexible Printed Circuit) can be damaged if removed while themainboard connector is locked.Keyboard Installation 01. Put the keyboard face down on the upper case (C). Refer to Figure 3-7.2. Connect the keyboard FPC (A) to the mainboard connector (B). Refer to Figure 3-7.3. Turn the keyboard over and align the keyboard with the indentation in the uppercover.4. Press down to secure the latches on the upper cover. Refer to Figure 3-6.5. Install the battery.