EMC FC4400, Справочник по аппаратуре

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3
Handling CRUs
3-9
Servicing and Upgrading a Deskside DPE
• 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 CRUs from their
antistatic packaging until the exact moment that you are ready
to install them.
• Gather together the ESD kit and all other materials you will
need before you service a deskside DPE. Once servicing
begins, you should avoid moving away from the work site;
otherwise, you may build up an electrostatic charge.
• Use the ESD kit when handling any CRU. If an emergency
arises and the ESD kit is not available, follow the procedures
in the “Emergency procedures (without an ESD kit)” section.
An ESD wristband (part no. 129002319) is supplied with your
DPE.
Emergency
Procedures (without
an ESD Kit) In an emergency when an ESD kit is not available, use the following
procedures 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.
• Before touching any CRU, touch a bare (unpainted) metal surface
of the enclosure.
• Before removing any CRU from its antistatic bag, place one hand
firmly on a bare metal surface of the enclosure, and at the same
time, pick up the CRU while it is still sealed in the antistatic bag.
Once you have done this, do not move around the room or contact
other furnishings, personnel, or surfaces until you have installed
the CRU.
• When you remove a CRU from the antistatic bag, avoid touching
any electronic components and circuits on it.