HP 6930p HP EliteBook 6930p Notebook PC - Maintenance and Service Guide - Page 76

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 482963-001 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 44). 5. Remove the keyboard (see Keyboard on page 58). 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 top cover. Reverse this procedure to install the RTC battery. 66 Chapter 4 Removal and replacement procedures

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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
482963-001
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
44
).
5.
Remove the keyboard (see
Keyboard
on page
58
).
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 top cover.
Reverse this procedure to install the RTC battery.
66
Chapter 4
Removal and replacement procedures