2 Upgrading the Flash EPROM Memory Card
Safety with Electricity
Follow these guidelines to ensure general safety:
•
Keep the chassis area clear and dust-free during and after installation.
•
Put the removed chassis cover in a safe place.
•
Keep tools away from walk areas where you or others could fall over them.
•
Do not wear loose clothing that could get caught in the chassis. Fasten your tie or scarf and roll
up your sleeves.
•
Wear safety glasses when working under any conditions that might be hazardous to your eyes.
•
Do not perform any action that creates a potential hazard to people or makes the equipment
unsafe.
Safety with Electricity
Warning
Before working on equipment that is connected to power lines, remove jewelry
(including rings, necklaces, and watches). Metal objects will heat up when connected to power and
ground and can cause serious burns or can weld to the terminals.
Follow these guidelines when working on equipment powered by electricity:
•
Locate the emergency power-off switch in the room in which you are working. Then, if an
electrical accident occurs, you can quickly shut the power OFF.
•
Before working on the system, turn OFF the power and unplug the power cord.
•
Disconnect all power before doing the following:
— Installing or removing a router chassis
— Working near power supplies
— Performing a software upgrade
•
Do not work alone if potentially hazardous conditions exist.
•
Never assume that power is disconnected from a circuit. Always check.
•
Look carefully for possible hazards in your work area, such as moist floors, ungrounded power
extension cables, and missing safety grounds.
•
If an electrical accident occurs, proceed as follows:
— Use caution; do not become a victim yourself.
— Turn OFF power to the system.
— If possible, send another person to get medical aid. Otherwise, determine the condition of the
victim and then call for help.
— Determine if the person needs rescue breathing or external cardiac compressions; then take
appropriate action.
