Communications Interface Problems; Rs-232 Serial Cable Problems - Teledyne CETAC ASX-112FR Operator's Manual

ASX-112FR Autosampler Operator's Manual
Chapter 7: Troubleshooting the Autosampler
 If the LED is lit when unplugged from the autosampler but turns off when
plugged into the autosampler, the autosampler may have an internal short
and requires repair.
Check the wall outlet.
4
The power supply may trip a GFI (ground fault interrupt) outlet in its normal
operation as it discharges internal capacitors. Make certain that the power
supply/cooler unit is not plugged into a GFI outlet. If it is, move the AC line
cord to a standard outlet, or have a qualified electrician switch the AC power
outlet from GFI to a standard, grounded outlet.
If the external power supply LED is illuminated while plugged into the
autosampler, cycle the autosampler power switch. The autosampler sample
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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
or contact CETAC at CETACservice@teledyne.com.

Communications Interface Problems

Operation of the autosampler is directed by the host computer. A malfunction
can indicate a problem with the RS-232 or USB cable (connected between the
host computer and the autosampler) or with the configuration of the software
on the host computer. The following sections explain how to troubleshoot
these problems.
The first step in troubleshooting communications interface problems is to

RS-232 Serial Cable Problems

check the RS-232 cable.
Check the RS-232 cable to ensure it is plugged in to the COM1 port on the
autosampler.
1
If the cable is plugged in, ensure that it is tightened properly and not damaged
in any way.
Note that the cable must be plugged into the autosampler's COM1 port, not
another port such as the AUX I/O port or the DILUTOR port.
Check the host computer to ensure that the RS-232 cable is connected to the
appropriate COM port.
2
If the cable is plugged in, ensure that it is tightened properly and not damaged
in any way.
Check the serial port settings (9600, N, 8, 1).
3
If the wrong port or baud rate is selected, change the configuration. For
information about changing the software configuration, see Chapter 4,
"Verifying Installation."
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