Compaq 2510p HP Compaq 2510p Notebook PC - Maintenance and Service Guide - Page 57

RTC battery, Remove the RTC battery

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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 RTC battery Spare part number 451716-001 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 (see Memory module on page 45). Remove the RTC battery: 1. Disconnect the RTC battery cable (1) from the system board. 2. Release the RTC battery (2) from the clip built into the base enclosure by sliding it forward. 3. Remove the RTC battery (3). Reverse this procedure to install the RTC battery. Component replacement procedures 47

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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
451716-001
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 (see
Memory module
on page
45
).
Remove the RTC battery:
1.
Disconnect the RTC battery cable
(1)
from the system board.
2.
Release the RTC battery
(2)
from the clip built into the base enclosure by sliding it forward.
3.
Remove the RTC battery
(3)
.
Reverse this procedure to install the RTC battery.
Component replacement procedures
47