HP ProBook 470 G1, Maintenance And Service Manual

Page: 76 / 149

RTC battery
Description Spare part number
RTC battery 683601-001
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 34 ).
5. Remove the following components:
a.
Service door (see Service door on page 35 ).
b. Hard drive (see Hard drive on page 36 )
c. Optical drive (see Optical drive on page 39 )
d. WLAN/Bluetooth module (see WLAN/Bluetooth combo card on page 43 )
e. Keyboard (see Keyboard on page 45 )
f. Top cover (see Top cover on page 47 )
g. System board (see System board on page 60 )
Remove the RTC battery:
1. Position the system board upside-down.
2. Use a thin screwdriver or similar tool to pry the battery out of the socket (1).
3. Remove the battery from the socket (2).
Reverse this procedure to install the RTC battery.
64 Chapter 6 Removal and replacement procedures for Authorized Service Provider parts