Rtc Battery - HP ProBook 4540s 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
5. Remove the following components:
a. Bottom door (see
b. Hard drive (see
c. Optical drive (see
d. Keyboard (see
e. Heat shield (see
f. Fan (see
g. Heat sink (see
h. Top cover (see
i. System board (see
Remove the RTC battery:
1. Position the system board upside-down.
2. Disconnect the battery cable from the system board (1).
Battery on page
Bottom door on page
Hard drive on page
Optical drive on page
Keyboard on page
Heat shield on page
Fan on page 75)
Heat sink on page
Top cover on page
System board on page
55).
58).
62)
60)
70)
73)
77)
82)
99)
Component replacement procedures 103
Spare part number
683502-001