Red Hat ENTERPRISE LINUX WS 2.1 - Instalační příručka stáhnout pdf (Strana 175)

Troubleshooting TopSpin 175

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INDEX

Note that CCU, RCU and DRU have an upright orientation while the Ipso board is

typically horizontally orientated.

In all cases the first step of troubleshooting should be to check if the spectrometer

is on power and there is a physical network connection between the Linux PC and

the spectrometer.

12.3.1 Troubleshooting for AV and AV-II type of spectrometer

First of all it is necessary to check the communication between the PC and the

CCU. This can be done in the following way:

a) Open a shell

b) Type telnet spect

Depending on whether telnet spect works (you get a login prompt) or

not, continue with paragraph 12.3.1.1 or 12.3.1.2.

12.3.1.1 Communication problems but telnet spect works

If telnet spect works, the CCU has booted. This means that the spectrometer

network software is installed and running. The communication problems obvi-

ously have other causes. Two of the most common causes are mentioned below.

In each of the following steps you must be logged in on the PC as root and type the

indicated commands in a shell.

1. Check if the process startd is running on the CCU:

a) Type telnet spect and log in on the CCU as root

b) Type ps -efw| grep startd

Does this command show you 2 processes /etc/startd?

YES? Then startd is running, type exit, go to step 2

NO? Then you found the problem, go to step 1c.

c) Type /etc/startd

Trying to start startd in this way might show you the reason why startd was

not started automatically. You might have a hardware problem and starting

the startd manually indicates which board has a failure. Run the correspond-

ing hardware test (see chapter 12.7.1).

2. Check the list of PC names in the file /etc/resolv.conf.

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Red Hat ENTERPRISE LINUX WS 2.1 - Instalační příručka Strana 175