ASXPRESS PLUS Rapid Sample Introduction System Operator’s Manual
Chapter 12: Troubleshooting the Rapid Sample Introduction System
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probe should move up and the autosampler should initialize. After
initialization, the status LED on the front of the autosampler should light up.
• If the cords are properly connected, power is available, the
external power supply is good, and the unit still does not initiate,
continue troubleshooting.
Communications Interface Problems
Operation of the ASXPRESS PLUS system is directed by the host computer. A
malfunction of the ASX
PRESS PLUS Rapid Sample Introduction System can
indicate a problem with the RS-232 or USB cable (connected between the host
computer and the electronics module) or with the configuration of the
software on the host computer. The following sections explain how to
troubleshoot these problems.
RS-232 Cable Problems
The first step in troubleshooting communications interface problems is to
check the RS-232 cable. To do so, complete the following steps (See
Autosampler manual for further troubleshooting information):
1 Check the RS-232 cable to ensure it is plugged in to the COM1 port on the
Autosampler.
If the cable is plugged in, ensure that it is tightened properly and not
damaged in any way.
2 Check the host computer to ensure that the RS-232 cable is connected to the
appropriate COM port.
If the cable is plugged in, ensure that it is tightened properly and not
damaged in any way.
USB cable Problems
An option to using RS-232 communications protocol is to use USB protocol.
The USB port located on the back of the autosampler is an alternate connection
protocol option to the RS-232 port at Com 1. Either RS-232 or USB may be
used at that port, but not both at once. To troubleshoot a problem with the USB
cable, complete the following steps:
1 Check the USB cable to ensure it is plugged in to the COM1 port on the
Autosampler.
If the cable is plugged in, ensure that it is connected properly and not
damaged in any way.
2 Check the host computer to ensure that the USB cable is connected to the
appropriate USB port.
If you move the USB cable to a new USB port, remember that it is necessary
to reconfigure the connection (see page 86).
If the cable is plugged in, ensure that it is connected properly and not
damaged in any way.
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