Compaq Presario V6500 Compaq Presario V6500, V6600, and V6700 Notebook PCs - M - Page 54

RTC battery, Disconnect the RTC battery cable

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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 2-sided tape) Spare part number 446518-001 and 449729-001 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 41). 5. Remove the memory/WLAN module compartment cover (see Memory module on page 44). Remove the RTC battery: 1. Disconnect the RTC battery cable (1) from the system board. 2. Remove the RTC battery (2). NOTE: The RTC battery is secured to the computer by 2-sided tape. All replacement RTC battery spare part kits include 2-sided tape. Reverse this procedure to install the RTC battery. 46 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 2-sided tape)
446518-001 and
449729-001
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
41
).
5
.
Remove the memory/WLAN module compartment cover (see
Memory module
on page
44
).
Remove the RTC battery:
1
.
Disconnect the RTC battery cable
(1)
from the system board.
2
.
Remove the RTC battery
(2)
.
NOTE:
The RTC battery is secured to the computer by 2-sided tape. All replacement RTC battery
spare part kits include 2-sided tape.
Reverse this procedure to install the RTC battery.
46
Chapter
4
Removal and replacement procedures