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5-4
98770 Diagnostics
co
Color and Highlighting in Various Combinations
Press
CO ;
the CRT displays:
Note
To see black, press one of the graphics color keys,
CJ!J
through
DiD.
If test fails replace the A13 (A33, AS3, AS4) assembly
CD
Alpha On and Off Test
Press
CD ;
the alpha display should disappear. Press
CD
again, the alpha display should
appear again. Press
CD
again to enable next test.
This test checks the alpha blanking circuit on the A13 (A33. AS3. AS4) assembly.
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