TOPIC: COMMUNICATION PORT FAILURE ON WY60

DATE:   12/17/92

PRODUCT:  WY60  

THE ISSUE:
       Modem or Aux port does not communicate.

OVERVIEW:
       Symptom: Assume the WY60 and host or printer is setup at
       9600 baud.  The terminal will not communicate with host or
       printer. (garbage will appear)  If the baud rate is set to
       19.2 on the terminal, then communication will take place
       "correctly", even though the terminal setup is "incorrect".

RESOLUTION:
       The problem is the terminal needs repair.  An incorrect part
       was inserted in position U3 on the WY60 PCB ( P/N 940921-0x )
       during manufacture.
       
       The correct part is EPCI 2661 "B".  The bad part is identified
       by "C" in place of the "B".  The WYSE p/n for U3 is 205501-01,
       which is specified as the "B" part.
       
       Manufacturing loopback test will not catch this problem!
       This test only checks to see the ports send and recieve at
       the same speed, not what the speed is.
      
       All Service Centers should check WY60 PCB's as they are used
       for the correct chip in location U3.


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  This information is intended to inform WYSE personnel and WYSE
  customers of certain issues in a timely fashion. The information
  has not been extensively verified or tested. WYSE does not warrant
  the information to be correct, although reasonable effort has been
  taken to prevent gross inaccuracies. WYSE publishes formal technical
  communiques in the form of Product Bulletins and warrants the data
  in Product Bulletins to be accurate at the time of the release.