HP Omnibook XE4400 Service Manual page 54

Reassembly Notes
Caution
Each time you remove the heatsink from the notebook, you must also replace the heatsink's
thermal pad to maintain optimum heat transfer. Use a sharp knife or scraper to carefully remove
the old thermal pad from the heatsink, then attach the new thermal pad.
• Replace the small fan first and then connect it to the motherboard. Note that the small fan gets
secured to the bottom case when replacing the top case.
• Install the heatsink screws in this order:
1. Install all four screws lightly.
2. Fully tighten the screws in the order marked on the heatsink.
2-32 Removal and Replacement HP Omnibook XE4400