HP 4 B5T04UA, 4 B5T03UA manual Description Spare part number RTC battery 686922-001

RTC battery

Description	Spare part number
RTC battery	686922–001

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 display panel (see Display panel on page 31).

5.Remove the base enclosure (see Base enclosure on page 33).

6.Disconnect the battery cable (see Battery on page 35).

Remove the RTC battery:

1.Disconnect the RTC battery cable from the system board (1). Use a thin, non-conductive tool to remove the RTC battery from the socket on the system board.

2.Gently hold down the media card reader board (2), and remove the RTC battery (3).

NOTE: The RTC battery is attached to the system board by foam material rather than double- sided adhesive.

40 Chapter 4 Removal and replacement procedures