HP TC4400 - Manual (Page 130)

Removal and Replacement Procedures
Maintenance and Service Guide 5–47
5.18 TouchPad
1. Prepare the tablet PC for disassembly ( Section 5.3 )
and remove the following components:
a. Hard drive ( Section 5.4 )
b. Keyboard cover ( Section 5.8 )
c. Keyboard ( Section 5.9 )
d. Button board ( Section 5.16 )
e. Display assembly ( Section 5.15 )
f. Top cover ( Section 5.17 )
2. Turn the top cover upside down with the front toward you.
TouchPad Spare Part Number Information
TouchPad (includes cable and bracket) 419165-001