[net.micro] Technical data for IBM Enhanced Graphics Display 5154

frede@aloha1.UUCP (frede) (03/19/86)

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
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