HP Pavilion dv3000 HP Pavilion dv3000 Entertainment PC - Maintenance and Servi - Page 72

RTC battery - cmos battery replacement

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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 (includes double-sided tape) Spare part number 468824-001 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 32). 5. Remove the following components: a. Optical drive (see Optical drive on page 37) b. Hard drive (see Hard drive on page 40) c. Keyboard (see Keyboard on page 42) d. Switch cover (see Switch cover on page 44) e. Top cover (see Top cover on page 45) f. Display assembly (see Display assembly on page 50) g. System board (see System board on page 57) Remove the RTC battery: 1. Turn the system board upside down, with the battery connector toward you. 2. Disconnect the RTC battery cable (1) from the system board. 64 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 (includes double-sided tape)
468824-001
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
32
).
5
.
Remove the following components:
a
.
Optical drive (see
Optical drive
on page
37
)
b
.
Hard drive (see
Hard drive
on page
40
)
c
.
Keyboard (see
Keyboard
on page
42
)
d
.
Switch cover (see
Switch cover
on page
44
)
e
.
Top cover (see
Top cover
on page
45
)
f
.
Display assembly (see
Display assembly
on page
50
)
g
.
System board (see
System board
on page
57
)
Remove the RTC battery:
1
.
Turn the system board upside down, with the battery connector toward you.
2
.
Disconnect the RTC battery cable
(1)
from the system board.
64
Chapter
4
Removal and replacement procedures