HP Dv2 1030us HP Pavilion dv2 Entertainment PC - Maintenance and Service Guide - Page 74

RTC battery, WWAN module see

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RTC battery NOTE: Removing the AC adapter, battery pack, and RTC battery and leaving them uninstalled for 10 or more seconds causes all passwords and CMOS settings to be cleared. Description RTC battery Spare part number 517759-001 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 39). 5. Remove the following components: a. Hard drive (see Hard drive on page 40) b. Memory module (see Memory module on page 43) c. WWAN module (see WWAN module on page 45) d. WLAN module (see WLAN module on page 47) e. Keyboard (see Keyboard on page 50) f. Top cover (see Top cover on page 53) g. Fan (see Fan on page 55) h. System board (see System board on page 59) Remove the RTC battery: 1. Turn the system board upside down. 2. Disconnect the RTC battery cable (1) from the connector on the system board. 66 Chapter 4 Removal and replacement procedures

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RTC battery
NOTE:
Removing the AC adapter, battery pack, and RTC battery and leaving them uninstalled for 10
or more seconds causes all passwords and CMOS settings to be cleared.
Description
Spare part number
RTC battery
517759-001
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
39
).
5.
Remove the following components:
a.
Hard drive (see
Hard drive
on page
40
)
b.
Memory module (see
Memory module
on page
43
)
c.
WWAN module (see
WWAN module
on page
45
)
d.
WLAN module (see
WLAN module
on page
47
)
e.
Keyboard (see
Keyboard
on page
50
)
f.
Top cover (see
Top cover
on page
53
)
g.
Fan (see
Fan
on page
55
)
h.
System board (see
System board
on page
59
)
Remove the RTC battery:
1.
Turn the system board upside down.
2.
Disconnect the RTC battery cable
(1)
from the connector on the system board.
66
Chapter 4
Removal and replacement procedures