ETHERLINK Board 3C501  (260-5435)       Testing        Faxback Doc. # 5609

MS-DOS diskette, version 3.x+ (or your current version)
EtherLink Diagnostic Software diskette supplied with the board
Loopback plug (A Loopback plug can be ordered from 3Com or assembled by
              connecting a network cable terminator to each end of a 
              T-connector)

RUN THE LOOPBACK TEST

1. Boot to MS-DOS 3.x+

2. Replace DOS diskette with Diagnostic Software

3. From the A> type   3C501  <Enter>

4. If the board passes, you see the message
     "Your Computer Passes Diagnose"

5. If the board fails, you see the message
     "TEST FAILS Probable Cause:  Hard Controller Failure"

6. Before assuming the EtherLink board is bad, check the following
   A. Check the installation of the board
   B. Test a known good board in that computer
   C. Check the jumpers on the 1st board
   D. Check for a conflict with other boards
   E. If changes were made to the Etherlink board, retest it

(dtc-08/03/93)