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AT6200/AT6400 Installation Guide
Troubleshooting Basics
When your system does not function properly (or as you expect it to operate), the first thing
that you must do is identify and isolate the problem. When you have accomplished this, you
can effectively begin to resolve the problem.
The first step is to isolate each system component and ensure that each component functions
properly when it is run independently. You may have to dismantle your system and put it
back together piece by piece to detect the problem. If you have additional units available, you
may want to exchange them with existing components in your system to help identify the
source of the problem.
Determine if the problem is mechanical, electrical, or software-related. Can you repeat or re-
create the problem? Random events may appear to be related, but they are not necessarily
contributing factors to your problem. You may be experiencing more than one problem. You
must isolate and solve one problem at a time.
Log (document) all testing and problem isolation procedures. Also, if you are having difficulty
isolating a problem, be sure to document all occurrences of the problem along with as much
specific information as possible. You may need to review and consult these notes later. This
will also prevent you from duplicating your testing efforts.
Once you isolate the problem, refer to the problem solutions contained in this chapter. If the
problem persists, contact your local technical support resource (see Technical Support below).
Reducing Electrical Noise
Refer to Appendix A for information on reducing electrical noise to the levels necessary for
CE compliance.
Diagnostic LEDs
PC-AT
After applying power, the status LED on the AT6n00 PC card will be off and the status LED on the
AUX board should be red. If the LED on the AUX board is off, the AUX board does not have AC power.
After downloading the operating system, the status LEDs on the AUX board and the PC card will
turn green indicating the system is ready for operation. If both status LEDs do not turn green after
downloading the operating system, an error has occurred. The download program (
AT6400
) issues an
error message if it cannot find the card or if the download operation is not successful (refer also to the
Download Error Table provided later in this chapter).
Board Monitor Alarm (BMA): Detects un-recoverable faults in hardware and software. When the BMA
detects a fault, the status LED on AT6n00 PC card turns off. The BMA can be reset by cycling power to
the PC-AT, or by re-downloading the AT6n00 operating system.
AUX
Board
Green: High density cable connected
OFF: Cable not connected properly
Test Program
A test program is available to test the functionality of many system components. Refer to
page 21 for step-by-step test procedures.
CAUTION
The
TEST
program will re-download the AT6n00 operating system, erasing all programs stored
in the AT6n00. Therefore, prior to launching the
TEST
program, you should save a copy of
your application program to an external disk.
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