Rtc Battery - HP ProBook 6550b Maintenance And Service Manual

RTC battery

Description
RTC battery (includes cable and double-sided tape)
Before removing the real-time clock (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
5. Remove the keyboard (see
Remove the RTC battery:
1. Disconnect the RTC battery cable (1) from the system board.
2. Detach the RTC battery (2) from the clip built into the top cover. (The RTC battery is attached to
the top cover with double-sided tape.)
Reverse this procedure to install the RTC battery. When installing the RTC battery, make sure the "+"
sign faces up.
Battery on page 72).
Keyboard on page 88).
Spare part number
449137-001
Component replacement procedures 93