HP ZE4900 - Manual (Page 102)

Removal and Replacement Procedures
Maintenance and Service Guide 5–19
5.9 Switch Board
✎
The switch board is included with the keyboard cover. Refer
to
Section 5.7, “Keyboard Cover,” for spare part number
information.
1. Prepare the notebook for disassembly ( Section 5.3 ).
2. Remove the keyboard cover ( Section 5.7 ).
3. Remove the keyboard ( Section 5.8 ).
4. Disconnect the display lid switch 1 and speaker cables 2
from the switch board.
Removing the Switch Board