Dell FC4500 Reference Guide - Page 54

Servicing and Upgrading a DPE 3 Avoiding Electrostatic Discharge (ESD) Damage When you replace or install CRUs, 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. Emergency Procedures (Without an ESD Kit) • 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 CRUs 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 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. To use it, attach the clip of the ESD wristband (strap) to any bare (unpainted) metal on the DPE enclosure; then put the wristband around your wrist with the metal button against your skin. 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. 3-6 EMC Fibre Channel Disk-Array Processor Enclosure (DPE) Hardware Reference