HP TC4400 - Manual (Page 28)

1–22 Maintenance and Service Guide
Product Description
1.5 Design Overview
This section presents a design overview of key parts and features
of the tablet PC. Refer to
Chapter 3, “Illustrated Parts Catalog,”
to identify replacement parts, and Chapter 5, “Removal and
Replacement Procedures,” for disassembly steps.
The system board provides the following device connections:
■ Audio
■ Display
■ Hard drive
■ Intel Core Duo and Celeron M processors
■ Keyboard
■ Memory module
■ Mini Card WLAN devices
■ PC Card
■ Pointing stick
■ TouchPad
Ä CAUTION: To properly ventilate the tablet PC, allow at least a 7.6-cm
(3-inch) clearance on the left and right sides of the tablet PC.
The tablet PC uses an electric fan for ventilation. The fan is
controlled by a temperature sensor and is designed to turn 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. Exhaust air is
displaced through the ventilation grill located on the left side of
the tablet PC.