HP Presario CQ20-100 Compaq Presario CQ20 Notebook PC - Maintenance and Servic - Page 17

Bottom components

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External component identification Bottom components Item Component 1 Vents (3) 2 Battery bay 3 Battery release latch 4 Wireless module compartment 5 Hard drive bay Function Enables airflow to cool internal components. ✎ The computer fan starts up automatically to cool internal components and prevent overheating. It is normal for the internal fan to cycle on and off during routine operation. Holds the battery. Releases the battery from the battery bay. Holds a WLAN module (select models only). ✎ To prevent an unresponsive system, replace the module only with a wireless module authorized for use in the computer by the governmental agency that regulates wireless devices in your country or region. If you replace the module and then receive a warning message, remove the module to restore computer functionality, and then contact technical support through Help and Support. Holds the hard drive and two memory modules. 2-8 Maintenance and Service Guide

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2–8
Maintenance and Service Guide
External component identification
Bottom components
Item
Component
Function
1
Vents (3)
Enables airflow to cool internal components.
✎
The computer fan starts up automatically to cool internal components
and prevent overheating. It is normal for the internal fan to cycle on and
off during routine operation.
2
Battery bay
Holds the battery.
3
Battery release latch
Releases the battery from the battery bay.
4
Wireless module compartment
Holds a WLAN module (select models only).
✎
To prevent an unresponsive system, replace the module only with a
wireless module authorized for use in the computer by the
governmental agency that regulates wireless devices in your country or
region. If you replace the module and then receive a warning message,
remove the module to restore computer functionality, and then contact
technical support through Help and Support.
5
Hard drive bay
Holds the hard drive and two memory modules.