Lenovo ThinkServer RD120 Bedienungsanleitung PDF herunterladen (Seite 75)

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 (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 Action

The server does not turn off.

1. Turn off the server by pressing the power-control button for 5 seconds.

2. Restart the server.

3. If the server fails POST and the power-control button does not work, disconnect

the power cord for 20 seconds; then, reconnect the power cord and restart the

server.

Attention: In a dc power environment, only trained service personnel other

than Lenovo service technicians are authorized to connect or disconnect power

to the dc power supply. See the documentation that comes with each dc power

supply.

4. If the problem remains, suspect the system board.

The OVER SPEC LED on the

Easy LED Diagnostics panel is

lit, and the one of the power

channel LEDs on the system

board is lit.

See the power troubleshooting table in the Hardware Maintenance Manual or call

for service.

The server unexpectedly shuts

down, and the LEDs on the

operator information panel are

not lit.

See “Solving undetermined problems” in the Hardware Maintenance Manual.

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 (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 Action

The number of serial ports that

are identified by the operating

system is less than the number

of installed serial ports.

1. Make sure that:

v Each port is assigned a unique address in the Configuration/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, if one is present.

3. Replace the serial port adapter, if one is present.

Chapter 5. Solving problems 61

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