HP omnibook 4000 Service Manual

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33

Keyboard Grounding Plate, CPU, and System Board
(HP Authorized Service Providers Only)

• 

Phillips Screwdriver

• 

Nutdriver (5 mm or 3/16 in)

Components to remove prior Keyboard Grounding Plate, CPU, and System
Board:
1. HDD, FDD, and Battery
2. Icon Assembly and Display Module
3. Palm Rest Assembly
4. Keyboard Assembly
5. Power Board
6. Upper Case, Sound Board, and Display Connect

Removal Procedure:
1. Remove Battery, Floppy Disk Drive, and Hard Disk Drive.
2. Follow the Icon Assembly and Display Module Removal Procedure to remove

these components

3. Follow the Palm Rest and Keyboard Assembly Removal Procedures to remove

these components.

4. Remove the Power Board by gently rocking back and forth.
5. Remove the Upper Case, Sound Board, and Display Connect by following the

corresponding Removal Procedure.

6. Remove the K/B Grounding Plate by unfastening the three (3) ISOB M2.6x5L

screws and one (1) 10mm standoff.  See Figure 11 for locations of these
components.  Take note that the Track Ball and Sub Battery-M/B Harnesses
must be threaded through the K/B Grounding Plate before it can be freely
removed.

7. The CPU may now be removed by gently rocking back and forth.  Take care not

to dislodge the heat sink from the top of the CPU.  If needed, the CPU Shielding
Plate may also be removed at this point.