Service Manual

Use the correct external power source. Operate the product only from the type of power source
indicated on the electrical ratings label. If you are not sure of the type of power source required,
consult your Dell service provider or local power company.
To help avoid damaging your system components, be sure the voltage selection switch (if provided) on
the power supply is set to match the power available at your location:
115 volts (V)/60 hertz (Hz) in most of North and South America and some Far Eastern countries
such as South Korea and Taiwan
100 V/50 Hz in eastern Japan and 100 V/60 Hz in western Japan
230 V/50 Hz in most of Europe, the Middle East, and the Far East
Also be sure that your monitor and attached devices are electrically rated to operate with the power
available in your location.
Use only approved power cable(s). If you have not been provided with a power cable for your server,
storage system, or appliance, or for any AC-powered option intended for your system, purchase a
power cable that is approved for use in your country. The power cable must be rated for the product
and for the voltage and current marked on the product’s electrical ratings label. The voltage and
current rating of the cable should be greater than the ratings marked on the product.
To help prevent electric shock, plug the system/components and peripheral power cables into properly
grounded electrical outlets. These cables are equipped with three-prong plugs to help ensure proper
grounding. Do not use adapter plugs or remove the grounding prong from a cable. If you must use an
extension cable, use a three-wire cable with properly grounded plugs.
Observe extension cable and power strip ratings. Make sure that the total ampere rating of all products
plugged into the extension cable or power strip does not exceed 80 percent of the extension cable or
power strip ampere ratings limit.
To help protect your system/components from sudden, transient increases and decreases in electrical
power, use a surge suppressor, line conditioner, or uninterruptible power supply (UPS).
Position system cables and power cables carefully; route system cables and the power cable and plug
so that they cannot be stepped on or tripped over. Be sure that nothing rests on your system
components’ cables or power cable.
Do not modify power cables or plugs. Consult a licensed electrician or your power company for site
modifications. Always follow your local/national wiring rules.
To help avoid possible damage to the system board, wait 5 seconds after turning off the system before
removing a component from the system board or disconnecting a peripheral device from the computer.
Handle batteries carefully. Do not disassemble, crush, puncture, short external contacts, dispose of in
fire or water, or expose batteries to temperatures higher than 60 degrees Celsius (140 degrees
Fahrenheit). Do not attempt to open or service batteries; replace batteries only with batteries
designated for the product.
Turn down the volume before using headphones or other audio devices.