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OEM-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 the guidelines on page 14 and in Appendix A. General information on reducing
electrical noise can be found in the Engineering Reference section of the Parker
Compumotor/Digiplan Positioning Control Systems and Drives Catalog.
Diagnostic LED
PC-AT
After applying power, the LED will be off. After
downloading the operating system, the status LED will
turn green indicating the system is ready for operation.
If the LED does 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 Downloading 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 LED turns off. The BMA can be
reset by cycling power to the PC-AT, or by re-
downloading the operating system.
OEM-AT6400
Test Program
A test program is available to test the functionality of many system components. Refer to
page 15 for step-by-step test procedures.
CAUTION
The
TEST
program will re-download the OEM-AT6400 operating system, erasing all programs
stored in the OEM-AT6400. Therefore, prior to launching the
TEST
program, you should save
a copy of your application program to a disk.
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