Design Overview - HP Compaq NX4820 Maintenance And Service Manual

Product Description

1.5 Design Overview

This section presents a design overview of key parts and features
of the computer. Refer to
to identify replacement parts, and
Replacement Procedures,"
The system board provides the following device connections:
■
Memory module
■
Mini PCI communications devices
■
Hard drive
■
Display
■
Keyboard and TouchPad
■
Audio
■
Intel Pentium M and Celeron M processors
■
Fan
■
PC Card
Ä
CAUTION: To properly ventilate the computer, allow at least a 7.6-cm
(3-inch) clearance on the left and right sides of the computer.
The computer uses an electric fan for ventilation. The fan is
controlled by a temperature sensor and is designed to be turned
on automatically when high temperature conditions exist. These
conditions are affected by high external temperatures, system
power consumption, power management/battery conservation
configurations, battery fast charging, and software applications.
Exhaust air is displaced through the ventilation grill located on
the left side of the computer.
1–36
Chapter 3, "Illustrated Parts Catalog,"
Chapter 5, "Removal and
for disassembly steps.
Maintenance and Service Guide