HP Pavilion dv4-4000 HP Pavilion dv4 Entertainment PC - Maintenance and Servic - Page 57

RTC battery, Remove the memory module/wireless module compartment cover see

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RTC battery Description RTC battery Spare part number 449137-001 Before removing the RTC battery, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 41). 5. Remove the memory module/wireless module compartment cover (see WLAN module on page 44). 6. Remove the WWAN module (see WWAN module on page 47). Remove the RTC battery: ▲ Use a thin, non-conductive tool to remove the RTC battery from the socket on the system board. Component replacement procedures 49

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RTC battery
Description
Spare part number
RTC battery
449137-001
Before removing the RTC battery, follow these steps:
1.
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.
Disconnect all external devices connected to the computer.
3.
Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4.
Remove the battery (see
Battery
on page
41
).
5.
Remove the memory module/wireless module compartment cover (see
WLAN module
on page
44
).
6.
Remove the WWAN module (see
WWAN module
on page
47
).
Remove the RTC battery:
▲
Use a thin, non-conductive tool to remove the RTC battery from the socket on the system board.
Component replacement procedures
49