HP ProBook 4520s Notebook PC and HP ProBook 4720s Notebook PC - Maintenance and Service Guide

9. Remove the thermal shield (see Thermal shield on page 62).
10. Remove the display assembly (see
Display assembly on computers with 17.3-in displays
on page 80 or Display assembly on computers with 15.6-in displays on page 86).
11.
Remove the palm rest (see
Palm rest on page 76).
12. Remove the hard drive (see
Hard drive on page 78).
13. Remove the top cover (see
Top cover on page 92).
Remove the USB connector assembly:
1. Position the computer right-side up with the right side toward you.
2. Remove the Phillips PM2.5×3.0 screw (1) that secures the USB connector assembly to the base
enclosure.
3. Disconnect the cable from the system board (2).
4. Remove the USB connector assembly (3) from the base enclosure.
Reverse this procedure to install the USB connector assembly.
RJ-11 connector assembly
NOTE: The RJ-11 connector assembly is included in the Base Cable Kit, spare part number
603188-001 for 17.3-in computers and 599807-001 for 15.6-in computers.
Component replacement procedures
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