Compaq 6730s HP Compaq 6730s and 6735s Notebook PC - Maintenance and Service G - Page 88

RTC battery, Switch cover and keyboard see - 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 Spare part number 449137-001 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 50). 5. Remove the following components: a. Hard drive (see Hard drive on page 51) b. Optical drive (see Optical drive on page 59) c. Switch cover and keyboard (see Switch cover and keyboard on page 61) d. Speakers (see Speakers on page 66) e. Display assembly (see Display assembly on page 67) f. Top cover (see Top cover on page 74) Remove the RTC battery: 1. Turn the system board upside down, with the audio connectors toward you. 2. Remove the RTC battery from the socket on the system board. Reverse this procedure to install the RTC battery. 80 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
449137-001
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
50
).
5.
Remove the following components:
a.
Hard drive (see
Hard drive
on page
51
)
b.
Optical drive (see
Optical drive
on page
59
)
c.
Switch cover and keyboard (see
Switch cover and keyboard
on page
61
)
d.
Speakers (see
Speakers
on page
66
)
e.
Display assembly (see
Display assembly
on page
67
)
f.
Top cover (see
Top cover
on page
74
)
Remove the RTC battery:
1.
Turn the system board upside down, with the audio connectors toward you.
2.
Remove the RTC battery from the socket on the system board.
Reverse this procedure to install the RTC battery.
80
Chapter 4
Removal and replacement procedures