Epson PC AX Technical Manual page 231

REV.A
DIAGRAMS AND REFERENCE MATERIALS
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320X200 GRAPH1CS MODE CHECK
COLOR SET
0
RED GREEN
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BROWN
CYAN
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1s the display correct (Y/N)?
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Confirm whether the pattern is accurately displayed, then
input the answer.
1f "N" is input, the program displays an error message.
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: Error code
=
506 :
: 320X200 GRAPHICS MODE ERROR :
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