HP FL939UT FL939UT#ABA manual Battery, Installing the system board, Removing the battery

Installing the system board

TIP: For convenience, you may install the CPUs and the CPU heatsinks before installing the system board in the chassis.

1.Ensure that all cables are clear of the bottom of the chassis (see Removing the system board on page 159).

2.Tilt the system board and lower it into the chassis, ensuring that all standoffs engage the chassis keyholes.

Ensure that the system board connectors engage correctly with the rear I/O panel.

3.Push back on the board while maintaining downward pressure on the board so all standoffs remain engaged.

CAUTION: Do not pinch any power or data cables.

4.Lift the system board corners to make sure the board is engaged properly.

5.Reinstall all removed components (in the reverse order of the section above) and reconnect any cables that have been disconnected.

To identify power cables, see Power connections on page 84.

See the removing and installing sections of this chapter for details on reinstalling component cables.

Battery

This section describes how to remove and install the battery.

The battery that comes with the workstation provides power to the real-time clock and has a minimum lifetime of about three years.

WARNING! This workstation includes a lithium battery. There is a risk of fire and chemical burn if the battery is handled improperly. Do not disassemble, crush, puncture, short external contacts, dispose in water or fire, or expose it to temperatures higher than 60°C (140°F).

CAUTION: Before removing the battery, back up the CMOS settings in case they are lost when the battery is removed. To back up the CMOS settings, select the Save to Diskette option in the Computer Setup (F10) Utility.

NOTE: Do not dispose of batteries, battery packs, and accumulators with general household waste.

Removing the battery

1.Disconnect power from the workstation (see Predisassembly procedures on page 73).

2.Remove the side access panel (see Removing the side access panel on page 75).

3.Remove the expansion card support (see Removing the expansion card support on page 77).

4.On the system board, press the release tab of the battery holder. (See Component locations on page 70 or the Side access panel service label to locate the battery.)

ENWW Removing and installing components 161