Serial Port Problems - Lenovo ThinkServer TS200 Installation And User 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 the parts listing in the Hardware Maintenance Manual to determine which components are customer
replaceable units (CRUs) and which components are field replaceable units (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 server unexpectedly shuts
down, and the LEDs on the
operator information panel 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 the parts listing in the Hardware Maintenance Manual to determine which components are customer
replaceable units (CRUs) and which components are field replaceable units (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 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
See "Solving undetermined problems" on page 142.
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.
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
Chapter 8. Troubleshooting
139