Asynchronous Communications Adapter 1100 - IBM 3270 Maintenance Manual

Asynchronous Communications
Adapter 1100
You have entered this PIC because your system
has an 11XX error code or you have a problem
with asynchronous communications.
Before starting the diagnostic tests, refer to
Section 4, "Locations", and ensure the following
conditions have been met:
• The primary Asynchronous Communications
Adapter is set for "primary asynchronous
adapter" operation.
• If a second Asynchronous Communications
Adapter is installed, it must be set for
"alternate asynchronous adapter" operation.
The asynchronous communications adapter
can be set to either RS-232 mode or
Current,.Loop Mode, depending on the
position of a module on the face of the
adapter. When you run the diagnostic:
For RS-232 mode, use wrap plug 8529228.
For Current-Loop mode, use wrap plug
6423197.
CONTINUE
October 1984 3-1100-1