Serial Port Problems - IBM x3200 M3 7327 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 4, "Parts listing, System x3200 M3 Types 7327 and 7328," on page 133 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 only)," that step must be performed only by a
trained service technician.
Symptom
The server unexpectedly shuts
down, and the LEDs on the
control-panel assembly are not
lit.

Serial port 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 4, "Parts listing, System x3200 M3 Types 7327 and 7328," on page 133 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 only)," that step must be performed only by a
trained service 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.
66
System x3200 M3 Types 7327 and 7328: Problem Determination and Service Guide
Action
See "Solving undetermined problems" on page 130.
Action
1. Make sure that:
v Each port is assigned a unique address in the Setup utility program 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 "Internal connectors,
LEDs, and switches" on page 16).
2. Reseat the following components:
a. Failing serial device
b. Serial cable
3. Replace the following components one at a time, in the order shown, restarting
the server each time:
a. Failing serial device
b. Serial cable
c. (Trained service technician only) System board