IBM VERSION 5 SY44-5902-05 - Manual (Page 325)

For this test the cable must be an IBM cable with a wrap connector plugged in
(note that IBM token-ring cables are self-wrapping; no external wrap connector is
needed).
If this test completes successfully, the communications cable and the
communications I/O adapter card are operating correctly.
If this test fails, the cause of the problem is the communications cable or the
communications I/O adapter card.
To further isolate the cause of the problem, run the communications I/O adapter
card test.
Communications I/O adapter test: The I/O adapter test verifies correct operation
of the communications I/O adapter. Because this test loads a diagnostic program
into the card, you must vary off all lines from the communications I/O adapter
before running the test.
For this test to run on a facsimile I/O processor, the wrap connector cable must be
attached from port A to port B on the I/O adapter card. This test sends a facsimile
signal from port A to port B and back again.
To run this test on a wireless LAN adapter, you do not need a wrap connector. To
test the radio and RS-485 hardware, run the wireless echo back test (see “Wireless
echo back test” on page 313).
To run this test on a communications adapter that has two ports, this is a two step
test. The selected port on the on the two port adapter cable is tested first, then the
I/O adapter card.
If this test completes successfully, the communications I/O adapter card is
operating correctly.
If this test fails, the I/O adapter card might be failing.
Notes:
1. Verify that the wrap connector has the correct identifier (as indicated by the
display prompt) and is correctly installed .
2. In some conditions, the associated I/O processor is the failing card. Select the
I/O processor test option, if it is available on the display, to verify the I/O
processor operation.
Communications I/O processor test: The communications I/O processor test
verifies the correct operation of the I/O processor card. Because this test loads a
diagnostic program into the card, you must vary off all lines from the
communications I/O processor before running the test.
If the test completes successfully, the I/O processor card is operational.
If the test fails, the I/O processor card is failing.
Communications I/O processor memory test: The communications I/O processor
memory test verifies that the storage of the I/O processor card is operational.
Because this test loads a diagnostic program into the card, you must vary off all
lines from the communications I/O processor before running the test.
Appendix A. OS/400 311