Grass Valley PRS 250 RAID Storage System - Manual (Page 61)

Handling CRUs
RAID Instructions 3-15
Handling CRUs
The following describes the precautions that you must take and the general
procedures you must follow when removing, installing, and storing CRUs.
Avoiding Electrostatic Discharge (ESD) Damage
The cover(s) and filler panel(s) installed on the equipment protect the electronic
circuits inside the equipment from electrostatic discharge (ESD) damage. However,
when you remove these covers and filler panels to replace or install subassemblies,
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.
CAUTION: Read and understand the following instructions before you remove the
cover(s) or panel(s) from the equipment.
• 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 materials.
• Do not remove replacement or upgrade subassemblies from their antistatic
packaging until the exact moment that you are ready to install them.
• Gather the tools, manuals, an ESD kit, and all other materials you will need before
you remove covers and panels from the equipment. Procedures for removing
subassemblies usually list required materials at the beginning. After you remove a
cover or panel, you should avoid moving away from the work site; otherwise, you
may build up an electrostatic charge.
• The SCSI connectors on the disk drive modules are particularly sensitive to ESD
damage. Disk drive modules should be transported and stored in the ESD bags they
are shipped in.
• Use an ESD kit when handling circuit boards or when touching the electronic
circuits inside the equipment. If an emergency arises and an ESD kit is not
available, follow the procedures in Emergency procedures (without an ESD kit)
which follows. An ESD wrist band (part no. 129-002319) is supplied with your
storage chassis.
• Replace the cover(s) or panel(s) on the equipment as soon as possible so that the
electronic circuits are protected.
• If the equipment has an opening for an optional device (such as a mass-storage
drive), and the device is not installed, make sure a filler panel is installed in the
opening before connecting the equipment to the ac power outlet.