Power Problems - IBM IntelliStation M Pro 9229 Installation Manual

Power problems

v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See the parts listing in the Problem Determination and Service Guide to determine which components are
customer replaceable units (CRU) and which components are field replaceable units (FRU).
v If an action step is preceded by "(Trained service technician)," that step must be performed only by a
trained service technician.
Symptom
The power-control button does not work, and the reset
button, if supported, does work.
The computer does not start.
The computer does not turn off.
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IBM IntelliStation M Pro Type 9229: Installation Guide
Action
1. (Trained service technician only) Reseat the power
switch/LED assembly cable.
2. Replace the following components one at a time, in
the order shown, restarting the computer each time:
a. (Trained service technician only) Power
switch/LED assembly
b. (Trained service technician only) System board
1. Make sure that:
v The power cords are correctly connected to the
computer and to a working electrical outlet.
v The type of memory that is installed is correct.
2. If you just installed an optional device, remove it, and
restart the computer. If the computer now starts, you
might have installed more devices than the power
supply supports.
3. Override the front panel power control button:
a. Disconnect the computer power cords.
b. Reconnect the power cords.
(Trained service technician only) If the computer does
not start, replace the system board.
4. See "Solving Undetermined Problems" in the Problem
Determination and Service Guide.
1. Determine whether you are using an Advanced
Configuration and Power Interface (ACPI) or
non-ACPI operating system. If you are using a
non-ACPI operating system, complete the following
steps:
a. Press Ctrl+Alt+Delete
b. Turn off the computer by pressing the
power-control button for four seconds.
c. If the computer fails POST and the power-control
button does not work, disconnect the power cord.
2. If the problem remains or if you are using an
ACPI-aware operating system, the problem might be
with the system board.