IBM 7870B4U Service Manual page 192

v See Chapter 4, "Parts listing," on page 41 to determine which components are CRUs and which components
are FRUs.
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
Symptom
The blade server does not turn
off.
178
BladeCenter HS22 Type 7870, 1936, and 1911: Problem Determination and Service Guide
Action
1. Verify whether you are using an Advanced Configuration and Power Interface
(ACPI) or non-ACPI operating system.
2. If you are using a non-ACPI operating system, complete the following steps:
a. Turn off the blade server by pressing the power-control button for 4
seconds. See "Blade server controls and LEDs" on page 11.
b. If the blade server fails during POST and the power-control button does
not work, remove the blade server from the bay and reseat it. See
"Removing the blade server from the BladeCenter unit" on page 52 and
"Installing the blade server in a BladeCenter unit" on page 53.
3. If the problem remains or if you are using an ACPI-aware operating system,
complete the following steps:
a. Check the power-management policies in the operating system for the
blade server.
b. (Trained service technician only) Replace the system-board assembly - See
"Removing the system-board assembly" on page 97 and "Installing the
system-board assembly" on page 98.