Programming instructions

86 Chapter 4

Field Replaceable Units

FRU Removal and Replacement

The procedures in this section describe how to remove and replace (install) field

replaceable units (FRUs). Observe any notices and prerequisites before removing an FRU.

Before performing any FRU removal or replacement procedure, you

must

do the

following:

1. Power off the workstation, the monitor, and any peripheral devices.

NOTE

There is no need to manually shutdown the HP-UX operating system on the

workstation before switching it off. When the front panel power switch is

pressed to off, the workstation automatically shuts down the operating

system before terminating the power. Wait for the system to completely

shutdown and power off before disconnecting the power cord.

CAUTION

Unplugging the power cord while HP-UX is running can damage system files.

2. Unplug the workstation’s power cord and the power cord of any peripheral devices from

AC wall outlets.

3. Unplug the workstation’s power cord from the AC input connector on the rear of the

workstation.

4. Disconnect any external cables from the connectors on the rear of the workstation.

5. Attach a static-grounding wrist strap to your wrist. Attach the sticky end of the wrist

strap to bare metal on the rear panel of the workstation.

6. Lay the workstation on a flat stable surface, such as a table top or floor. To protect

against scratches, remove miscellaneous debris and preferably use an ESD mat to

cushion the workstation.

CAUTION

Follow normal ESD anti-static precautions when handling the workstation or

any of its components. (See the section titled “Electrostatic Discharge (ESD)

Precautions” on page 177.) Failure to do so can cause component degradation

or failure.

7. If installed, remove any locking device from the security loop on the rear of the

workstation.