HP ProBook 5220m HP ProBook 5220m Notebook PC - Maintenance and Service Guide - Page 78

RTC battery

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RTC battery Description RTC battery Spare part number 599516-001 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 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 40). 5. Remove the following components: a. Switch cover (see Switch cover on page 51) b. Keyboard (see Keyboard on page 53) c. Top cover (see Top cover on page 56) Remove the RTC battery: 1. Use a sharp, non-conductive tool to release the clip that secures the battery to the system board. 2. Lift the battery out of the computer. To install the RTC battery, press it down into the socket until it is seated. 70 Chapter 4 Removal and replacement procedures

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RTC battery
Description
Spare part number
RTC battery
599516-001
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 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
40
).
5.
Remove the following components:
a.
Switch cover (see
Switch cover
on page
51
)
b.
Keyboard (see
Keyboard
on page
53
)
c.
Top cover (see
Top cover
on page
56
)
Remove the RTC battery:
1.
Use a sharp, non-conductive tool to release the clip that secures the battery to the system board.
2.
Lift the battery out of the computer.
To install the RTC battery, press it down into the socket until it is seated.
70
Chapter 4
Removal and replacement procedures