IBM CS821 Service Manual page 34

Before you begin
(L008)
CAUTION: Hazardous moving parts nearby. (L008)
Power off the system and place it in the service position. For instructions, see "Preparing the 8001-12C or
8005-12N system to remove and replace internal parts" on page 70.
Procedure
1. Attach the electrostatic discharge (ESD) wrist strap.
Attention:
v Attach an electrostatic discharge (ESD) wrist strap to the front ESD jack, to the rear ESD jack, or to
an unpainted metal surface of your hardware to prevent the electrostatic discharge from damaging
your hardware.
v When you use an ESD wrist strap, follow all electrical safety procedures. An ESD wrist strap is
used 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 an ESD 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.
2. Lift the holder for the fans as shown in Figure 16 on page 19. The fans are easier to remove when the
holder is slightly lifted.
18
Power Systems: Servicing the IBM Power System S821LC (8001-12C) or the IBM CS821 (8005-12N)