IBM 6H0, Service Manual

Page: 449 / 561

PCI Adapters
With this system, you can install PCI adapters with the power on. These adapters are
referred to as hot-pluggable PCI adapters . Some adapters are not hot-pluggable and
power must be removed from the system for adapter installation.
Before you install the adapter, determine if the PCI adapter you are installing is
hot-pluggable. See the PCI Adapter Placement Reference , order number SA38-0538.
If you are removing a PCI adapter that is:
v
Not hot-pluggable, go to “Non-Hot-Pluggable PCI Adapter.”
v
Hot-pluggable, go to “Hot-Pluggable PCI Adapter” on page 431.
Non-Hot-Pluggable PCI Adapter
Removal
To remove an adapter, perform the following steps:
1. Turn power off and unplug the system unit power cable from the electrical outlet.
If the system is operating under AIX, type the
shutdown
command to power off the
system.
If you cannot use this method, you can power off the system by using the following
operator-panel power button procedure.
Attention: Using the primary I/O drawer operator-panel power button to power
off the system may cause unpredictable results in the data files, and the next IPL
will take longer to complete.
a. Open the rack door.
b. Press the power button on the primary I/O drawer operator panel.
The primary I/O drawer operator panel Power LED starts blinking at a fast rate.
B0FF appears in the primary operator panel display.
When the power-off sequence is complete, the system will go into standby mode,
as evidenced by:
v OK
displays in the primary operator panel display.
v
The primary I/O drawer operator panel LED will start blinking at a slow rate.
v The CEC drawer power LED will start blinking at a slow rate.
2. Place the I/O drawer in the rear service position, as follows:
a. If you have not already done so, open the front door of the rack unit.
b. Loosen the two thumbscrews that attach the front bezel to the drawer.
c. Grasp both sides of the front bezel and pull the bezel off the drawer.
d. If you have not already done so, open the rear door of the rack unit.
e. If present, remove the two retaining screws that secure the drawer to the rails.
f. Ensure that the cables do not restrain drawer movement.
g. Grasp the bar at the rear of the drawer, and pull the drawer to the rear until it
is stopped by the two detents on the top of the drawer.
Chapter 9. Removal and Replacement Procedures
429