Rtc Battery - HP EliteBook 2540P Maintenance And Service Manual

RTC battery

Description
RTC battery
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
a. Memory module compartment cover (see
b. Wireless module compartment cover (see
c. Switch cover and keyboard (see
Remove the RTC battery:
▲ Use a flat-bladed, non-conductive tool to remove the RTC battery from the socket.
Reverse this procedure to install the RTC battery.
ENWW
Battery on page 48), and then remove the following components:
Expansion memory module on page
WLAN module on page
Switch cover and keyboard on page
Spare part number
481089-001
57)
69)
Component replacement procedures
52)
73