IBM 704 - Manual (Page 237)

About the Test Programs
About the Test Programs
This section includes useful information about navigating through
the test programs, as well as procedures for starting and stopping
them. These programs are designed to test the IBM PC Server 704.
Non-IBM products tested with these programs might present
misleading error messages or unexpected system responses. If you
want to test a non-IBM product, refer to the information that comes
with that product.
Note: You might need to install a wrap connector on your active
parallel port to obtain accurate parallel-port test results. If
you do not have a wrap connector, contact your IBM reseller
or IBM marketing representative.
Chapter 5. Solving Problems 219