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Safety
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Electrical
Follow these guidelines when working with electrical equipment:
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In addition, follow these guidelines when working with equipment that is disconnected from a power
source, but still connected to cable wiring.
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Electrostatic Discharge
Electrostatic discharge (ESD) damage, which occurs when electronic cards or components are
improperly handled, can result in complete or intermittent system failures. The
Cisco CVA122/CVA122E Cable Voice Adapter consists of a printed circuit board that is housed in a
shielded enclosure. Electromagnetic interference (EMI) shielding and connectors are integral
components of the enclosure. Although the enclosure helps protect the boards, use an antistatic strap
whenever handling the Cisco CVA122/CVA122E Cable Voice Adapter. This will minimize the
possibility that ESD damage can occur to the internal boards by touching the external connectors.
Following are guidelines for preventing ESD damage:
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Cisco CVA122/CVA122E Hardware Installation Guide
2-2
Keep tools and other components away from walk areas.
Do not wear loose clothing, jewelry (including rings and chains), or other items that could get
caught on the cable voice adapter. Fasten your tie or scarf and roll up your sleeves.
Use the Cisco-provided power supply and power cord to connect the Cisco CVA122/CVA122E
Cable Voice Adapter to its power supply and the power supply to the power outlet.
Operate the Cisco CVA122/CVA122E Cable Voice Adapter in accordance with its marked
electrical ratings and product usage instructions.
Always unplug the power cable before installing or removing a cable voice adapter.
Do not work on the system or connect or disconnect cables during periods of lightning activity.
Disconnect all power and external cables before installing or removing a cable voice adapter.
Do not work alone when potentially hazardous conditions exist.
Never assume that power has been disconnected from a circuit; always check.
Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.
Never install equipment that appears damaged.
Carefully examine your work area for possible hazards such as moist floors.
Never install coaxial wiring during a lightning storm.
Never install cable jacks in wet locations unless the jack is specifically designed for wet locations.
Never touch uninsulated cable wires or terminals unless the line has been disconnected at the
network interface.
Use caution when installing or modifying cable lines.
If you use an ESD wrist strap or ankle strap, ensure that it makes good skin contact and that the
equipment end of the ESD strap is attached to an unfinished surface of the
Cisco CVA122/CVA122E Cable Voice Adapter.
Always place the cable voice adapter on an antistatic surface or in a static shielding bag. If you are
returning the item to the factory, immediately place it in a static shielding bag.
Chapter 2
Preparing for Installation
OL-0799-02 (05/2001)
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Troubleshooting
