Troubleshooting With The Diagnostic Tests - 3Com III User Manual

5-2 C 5: P T D T
HAPTER ERFORMING ROUBLESHOOTING AND IAGNOSTIC ESTS

Troubleshooting with the Diagnostic Tests

The diagnostic tests on the 3C59X EtherDisk diskette check
the adapter's operation and permit the isolation of faults. You
can run the diagnostic tests after installing one or more
3C592 EISA adapters, or when a fault is suspected. If the tests
in their default configuration do not isolate the problem,
you can change the test parameters to meet specific
situations.
When the DOS operating system first loads, it executes the
AUTOEXEC.BAT and CONFIG.SYS files. These files are
user-definable files that set up the computer environment.
They may also load memory managers and drivers into
memory.
Always run diagnostic tests with no device drivers or memory
managers (EMM386.EXE and HIMEM.SYS) installed. To avoid
loading the drivers or memory managers, you can bypass the
AUTOEXEC.BAT and CONFIG.SYS files. If you are running
under DOS 6.2, pressing [F5] while starting the computer will
bypass these two files. If you are using DOS 6.x in a plain DOS
environment, you can bypass the CONFIG.SYS and
AUTOEXEC.BAT files by holding down the right [Shift] key
while starting the computer. If you are using an earlier version
of DOS, you must boot from a DOS diskette.
The diagnostic tests are divided into three groups,
designated Group 1, Group 2, and Group 3.
Group 1 tests check the physical components and circuitry
on the adapter.
The Group 2 test (for the 3C592-COMBO adapter only, not the
3C592-TPO adapter) checks the adapter's ability to transmit
and receive data via the internal transceiver.
The Group 3 test (the Echo Exchange Test) tests the
adapter's ability to transmit and receive data while on the
network.