Note:

For an OmniBook 4150† with a 5-screw CPU top plate or an OmniBook 4150B, you must remove the top plate before removing the CPU assembly—see the steps on page 2-19. The CPU and heatsink parts (*) differ from those shown below.

Screw, M2×3.5mm or*

M3×4mm

Heatsink cover*

Heatsink (finned)*

Heatpipe*

(part of CPU top plate)

VGA standoff (2)

Motherboard

Heat exchange cover (For OB 4150B this is part of fan, held by two screws)

Air vent cover

Screw, M2.5×5mm

Left frame

Screw, M2×14mm (2)*

CPU with top plate, bottom plate*

LVDS PCA

VGA PCA

DC-DC PCA

Audio jack PCA

IR PCA

Screw, M2.5×5mm

Screw, M2.5×5mm

Fan

Screw, M2.5×16mm

RAM/BIOS

Right frame

cover

 

Screw, M2×3.5mm

 

(OB 4100) or

Audio jack cover

M3×4mm

 

(OB 4150)

 

Figure 2-12. Removing the Motherboard

2-26 Removal and Replacement

HP OmniBook 4100/4150