IBM 704 manual Electrical Safety

Electrical Safety

Electrical Safety

For your safety, always do the following before removing the cover:

1.Turn off the server and any attached devices, such as printers, monitors, and external drives.

2.If you are in the United Kingdom and have a modem or fax machine attached to your server, you must disconnect the telephone line from the server before unplugging any power cords (also known as power cables). When reassembling your server, you must reconnect the telephone line after you plug in the power cords.

3.Unplug all the power cords from electrical outlets.

4.Disconnect all communication cables from external receptacles.

5.Disconnect all cables and power cords from the back of the server.

Note: Reconnect the cables or power cords only after you reassemble the server and put the covers back on.

4

CAUTION:

Never remove the cover on a power supply. Hazardous voltage, current, and energy levels are present inside the power supplies. There are no serviceable parts inside the power supplies. If you suspect a problem with a power supply, contact an IBM service technician.

Chapter 4. Installing Options 75