Rtc Battery - HP Compaq 2210b Maintenance And Service Manual

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
Before removing the RTC battery, follow these steps:
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the
1.
computer on, and then shut it down through the operating system.
Disconnect all external devices connected to the computer.
2.
Disconnect the power from the computer by first unplugging the power cord from the AC outlet and
3.
then unplugging the AC adapter from the computer.
Remove the battery (see
4.
Remove the following components:
5.
Hard drive (see
a.
Optical drive (see
b.
Keyboard (see
c.
Switch cover (see
d.
Display assembly (see
e.
Top cover (see
f.
Remove the RTC battery:
Disconnect the RTC battery cable (1) from the system board.
1.
58 Chapter 4 Removal and replacement procedures
Battery on page 37).
Hard drive on page 38)
Optical drive on page
Keyboard on page 47)
Switch cover on page
Display assembly on page
Top cover on page 55)
45)
49)
51)
Spare part number
449137-001