IBM Power System 8248-L4T Manual page 15

4. Stop the system. For instructions, see "Stopping a system or logical partition" on page 28.
5. Disconnect the power source from the system by unplugging the system. For instructions, see
Disconnecting the power cords.
Note: This system might be equipped with a second power supply. Before continuing with this
procedure, ensure that the power source to the system has been completely disconnected.
(L003)
or
6. Open the front rack door.
7. Remove the front cover. For instructions, see Removing the front cover from the 8248-L4T, 8408-E8D,
or 9109-RMD.
8. Place the system into the service position. For instructions, see Placing a rack-mounted model into
the service position.
9. Attach the wrist strap.
Attention:
v Attach a wrist strap to an unpainted metal surface of your hardware to prevent electrostatic
discharge (ESD) from damaging your hardware.
v When using a wrist strap, follow all electrical safety procedures. A wrist strap is for static control.
It does not increase or decrease your risk of receiving electric shock when using or working on
electrical equipment.
v If you do not have a wrist strap, just prior to removing the product from ESD packaging and
installing or replacing hardware, touch an unpainted metal surface of the system for a minimum
of 5 seconds.
10. Press the push button on the planar to turn on the processor voltage regulator rollup LEDs to
identify the slot locations.
Voltage regulator modules
3