Compaq Presario CQ40-400 Compaq Presario CQ40 Notebook PC - Maintenance and Se - Page 22

Bottom components

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Bottom components Component (1) Battery bay (2) Battery release latch (3) RTC battery compartment (4) Memory module compartment (5) Hard drive and WLAN module compartment (6) Vents (3) Description Holds the battery. Releases the battery from the battery bay. Holds the RTC battery. Contains the 2 memory module slots. Holds the hard drive and the wireless LAN (WLAN) device. CAUTION: To prevent an unresponsive system, replace the wireless 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. Enable airflow to cool internal components. NOTE: 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. 14 Chapter 2 External component identification

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Bottom components
Component
Description
(1)
Battery bay
Holds the battery.
(2)
Battery release latch
Releases the battery from the battery bay.
(3)
RTC battery compartment
Holds the RTC battery.
(4)
Memory module compartment
Contains the 2 memory module slots.
(5)
Hard drive and WLAN module compartment
Holds the hard drive and the wireless LAN (WLAN) device.
CAUTION:
To prevent an unresponsive system, replace the
wireless 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.
(6)
Vents (3)
Enable airflow to cool internal components.
NOTE:
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.
14
Chapter 2
External component identification