Serial-Device Problems - IBM System x3530 M4 Installation And Service Manual

v Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
v See Chapter 5, "Parts listing, IBM System x3530 M4 Type 7160," on page 265 to check if a component is a
consumable, structural, or FRU part.
v If an action step is preceded by "(Trained technician only)," that step must be performed only by a trained
technician.
Symptom
The server does not turn off.
The server unexpectedly shuts
down, and the LEDs on the
operator information panel are
not lit.

Serial-device 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 Chapter 5, "Parts listing, IBM System x3530 M4 Type 7160," on page 265 to check if a component is a
consumable, structural, or FRU part.
v If an action step is preceded by "(Trained technician only)," that step must be performed only by a trained
technician.
Symptom
The number of serial ports that
are identified by the operating
system is less than the number
of installed serial ports.
A serial device does not work.
Action
1. Determine whether you are using an Advanced Configuration and Power
Interface (ACPI) or a 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 server by pressing the power-control button and hold it down
for 5 seconds.
c. Restart the server.
d. If the server fails POST and the power-control button does not work,
disconnect the ac power cord for 20 seconds; then, reconnect the ac power
cord and restart the server.
2. If the problem remains or if you are using an ACPI-aware operating system,
suspect the system board.
See "Solving undetermined problems" on page 259.
Action
1. Make sure that:
v Each port is assigned a unique address in the Setup utility and none of the
serial ports is disabled.
v The serial-port adapter (if one is present) is seated correctly.
2. Reseat the serial port adapter.
3. Replace the serial port adapter.
1. Make sure that:
v The device is compatible with the server.
v The serial port is enabled and is assigned a unique address.
v The device is connected to the correct connector (see "Connecting the
cables" on page 68).
2. Reseat the following components:
a. Failing serial device
b. Serial cable
3. Replace the components listed in step 2 one at a time, in the order shown,
restarting the server each time.
4. (Trained technician only) Replace the system board.
Chapter 4. Troubleshooting
255