HP PAVILION DX6500 - Manual (Page 53)

RTC battery
NOTE: Removing the RTC battery and leaving it uninstalled for 5 or more minutes causes all passwords
and CMOS settings to be cleared.
Description Spare part number
RTC battery (includes double-sided tape) 449729-001
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 36 ).
5 . Remove the memory/WLAN module compartment cover (see Memory module on page 43 ).
Remove the RTC battery:
1 . Disconnect the RTC battery cable (1) from the system board.
2 . Remove the RTC battery (2) from the clip built into the base enclosure.
Reverse this procedure to install the RTC battery.
Component replacement procedures 45