Required Equipment 
•  #1 Phillips screwdriver. 
Removal Procedure 
1. 
2. 
3. 
4. 
5. 
Unplug the AC adapter, if present, and then remove the battery. 
Remove the keyboard cover (page 2-12). 
Disconnect both the 2-wire and 4-wire cables that connect the switchboard PCA to the top case 
and speaker assembly, respectively. 
Remove the M2.5×4.0 mm screw that secures the keyboard and switchboard PCA to the top case 
(page 2-26). 
Gently lift up on the keyboard, carefully remove the switchboard PCA from the top case, and then 
disconnect the underside motherboard cable. 
 
Figure 2-13. Removing the Switchboard PCA 
HP Pavilion 4300, 4200, and 4100, HP nx9005 and nx9000, 
Compaq Evo Notebook N1050 and 1010, and Compaq Presario 2100 and 1100 Models 
2-18  Removal and Replacement  Service Manual