You should not remove a faulty FRU until you have a replacement available.
When you replace FRUs, you can inadvertently damage the sensitive electronic circuits in
the equipment by simply touching them. Electrostatic charge (ESD) that has accumulated
on your body discharges through the circuits. If the air in the work area is very dry,
running a humidifier in the work area will help decrease the risk of ESD damage. Follow
the procedures below to prevent damage to the equipment.
u
Provide enough room to work on the equipment. Clear the work site of any
unnecessary materials or materials that naturally build up electrostatic charge, such
as foam packaging, foam cups, cellophane wrappers, and similar items.
u
Do not remove replacement or upgrade FRUs from their antistatic packaging until you
are ready to install them.
u
Before you service a server, gather together the ESD kit and all other materials you
will need. Once servicing begins, avoid moving away from the work site; otherwise,
you may build up an electrostatic charge.
u
Use the ESD kit when handling any FRU. Use an ESD wristband. To use the ESD
wristband (strap), attach the clip of the wristband to any bare (unpainted) metal on
the server; then put the wristband around your wrist with the metal button against
your skin. If an emergency arises and the ESD kit is not available, follow the
procedures in
Emergency procedures (without an ESD kit) on page 15
.
Emergency procedures (without an ESD kit)
In an emergency when an ESD kit is not available, use the procedures below to reduce
the possibility of an electrostatic discharge by ensuring that your body and the
subassembly are at the same electrostatic potential. These procedures are not a
substitute for the use of an ESD kit. Follow them only in the event of an emergency.
u
Before touching any FRU, touch a bare (unpainted) metal surface of the cabinet or
server.
u
Before removing any FRU from its antistatic bag, place one hand firmly on a bare
metal surface of the server, and at the same time, pick up the FRU while it is still
sealed in the antistatic bag. Once you have done this do not move around the room
or touch other furnishings, personnel, or surfaces until you have installed the FRU.
u
When you remove a FRU from the antistatic bag, avoid touching any electronic
components and circuits on it.
u
If you must move around the room or touch other surfaces before installing a FRU,
first place the FRU back in the antistatic bag. When you are ready again to install the
FRU, repeat these procedures.
Replacing a disk drive assembly
A disk drive assembly consists of a hard disk drive supplied in special hot-swappable
hard-drive carrier that fits in a disk slot. Disk slots are accessible from the front of the
Replacing a disk drive assembly
15
