66 xSeries 343 Hardware Maintenance Manual
Working Inside the System
This sectionpresents the following procedures that describe removal and installation of most
componentsinside the system.

Safety: Before You Remove Server Covers

Before removingcovers at any time to work inside the system, observe these safety guidelines.
1. Turn off all peripheraldevices connected to the system.
2. Power down the system by pressing and holding the Power button on the front of the chassis for
several seconds. After the server shuts down disconnect the DC power to remove standby
power from the server.
3. Label and disconnectall peripheral cables and all telecommunication lines connected to
I/O connectorsor ports on the back of the system.
Provide electrostaticdischarge (ESD) protection by wearing an anti-static wrist strap attached to
chassis groundof the system-any unpainted metal surface-when handling components.

Caution and Danger Statements

Caution and danger statementsapply whenever you remove covers of the system. Onlya
technicallyqualified person should integrate, configure, or service the system.
Statement 14
CAUTION
Hazardous voltage,current, and energy levels might be present. Onlya qualified
servicet echnicianis authorized to remove the covers where the following label is
attached.