Handling FRUs
3-7
Servicing a DAE2P/DAE3P
compartments should contain a FRU or filler panel to ensure EMI
compliance and proper air flow over the FRUs.
While the disk enclosure is powered up, you can service or replace
any FRU, although removing an active LCC will affect operating
system access to the disks it controls. You should not remove a faulty
FRU until you have a replacement available.
Since you can replace or add any FRU without sliding the disk
enclosure out of the cabinet, you do not have to use cabinet anti-tip
devices when you upgrade or service a DAE2P.
If you need to power down a DAE2P/DAE3P, simply unplug the
unit. You do not need to shut down main AC lines to the disk
enclosure unless you need to power down all the cabinet contents
connected to that line.
Avoiding
Electrostatic
Discharge (ESD)
damage
When you replace or install FRUs, you can inadvertently damage the
sensitive electronic circuits in the equipment by simply touching
them. Electrostatic charge 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. You must follow the procedures below to prevent
damage to the equipment.
Read and understand the following instructions:
◆ 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.
◆ Do not remove replacement or upgrade FRUs from their antistatic
packaging until you are ready to install them.
◆ Gather together the ESD kit and all other materials you will need
before you service a disk enclosure. Once servicing begins, you
should avoid moving away from the work site; otherwise, you
may build up an electrostatic charge.
◆ An ESD wristband is supplied with your disk enclosure. To use it,
attach the clip of the ESD wristband (strap) to any bare
(unpainted) metal on the disk enclosure; then put the wristband
around your wrist with the metal button against your skin.
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