HP Compaq Presario,Presario 1500 Maintenance And Service Manual page 159

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After the top cover is removed, the system board-to-TouchButton
board cable can be removed. The system board-to-TouchButton
board cable is included in the Miscellaneous Cable Kit, spare part
number 285540-001.
10. Release the ZIF connector 1 to which the system
board-to-TouchButton board cable is attached and disconnect
the cable 2 from the system board (Figure 5-41).
Figure 5-41. Removing the System Board-to-TouchButton
Board Cable
Reverse the preceding procedures to install the top cover.
Maintenance and Service Guide
Removal and Replacement Procedures
5–53