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From: frede@aloha1.UUCP (frede)
Newsgroups: net.micro,net.micro.pc
Subject: Technical data for IBM Enhanced Graphics Display 5154
Message-ID: <105@aloha1.UUCP>
Date: Wed, 19-Mar-86 07:43:59 EST
Article-I.D.: aloha1.105
Posted: Wed Mar 19 07:43:59 1986
Date-Received: Tue, 25-Mar-86 02:44:29 EST
Organization: University of Hawaii, Honolulu
Lines: 14
Keywords: IBM EGD
Xref: watmath net.micro:14103 net.micro.pc:7511

Can anyone help me obtain a schematic and/or technical
information for the IBM EGD model 5154.  Mine has developed
a problem.  When a program switches between display modes my
EGD often start writing text 2/3 of the way across the screen
and wraps around to the start of the line.  Switching the 
display off and back on usually cures the problem.  I suspect
that the horizontal scan rate selector circuit is defective. 
IBM does not repair EGD's on an individual basis but charges
approx. $400 for an exchange. 

Fred Petersen
EE Department
University of Hawaii
...{dual, vortex, ihnp4}!islenet!aloha1!frede