Nortel Networks 1000M warranty Working with power supplies, Handling circuit cards

Preparing for installation Page 59 of 456

Working with power supplies

There are no user-repairable components in the power supply. If a power supply fails, the complete unit must be replaced. Do not disassemble a power supply under any circumstances.

DANGER OF ELECTRIC SHOCK

To avoid the danger of electric shock, be careful when working with power equipment and connections.

Comply with all Warnings.

External power supplies such as a UPS, power plant, or batteries, may be heavy and require special handling procedures and additional personnel for unloading and installation. Also, be aware of weight distribution and keep the equipment room floor from being overly stressed.

Handling circuit cards

Follow these precautions when handling circuit cards.

1Unpack or handle cards away from electric motors, transformers, or similar machinery.

2Handle cards by the edges only. Do not touch the contacts or components.

3Set cards on a protective antistatic bag. If an antistatic bag is not available, hand-hold the card, or set it in a card cage unseated from the connectors.

4Store cards in protective packing.

5Do not stack cards on top of each other unless they are packaged.

6Wear a properly connected antistatic wrist strap when you work on the equipment. If a wrist strap is not available, regularly touch one of the bare metal strips in the module to discharge static. Figure 16 on page 60 shows the wrist strap connection points and the location of the bare metal strips you should touch.

Communication Server 1000M and Meridian 1 Large System Installation and Commissioning