AT&T PC 6300 - Page 250

DIAGNOSTICS
1 - MEMORY TEST: No error should occur during this test. If
any error does occur, reject the DEB.
Note: The "Diagnostic Utility" will write data to the
default drive. MFD default drives must have a formatted
(write unprotected) diskette installed.
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the 400-line graphics test and displays the same self-explanatory
messages. The monitor contrast control must be set to midrange.
6 - REDUCED LUT TEST (LITTLEBIT): Three self-
explanatory messages are displayed for this test.
Approval of the question asked on the screen redisplays the main
screen options. Selection "0" then summarizes the results on the
screen in a set of messages.
4-44
0
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2 - OPTION BOARD TRANSPARENT MODE: This test
displays a framed full screen with three lines. If any additional O
random character and/or blocks are displayed, reject the board, u.
3 - TEXT WITH 400-LINE GRAPHICS: This test produces a H
screen with 8 lines, each exercising a different video feature. The «-»-
monitor contrast control must be set to midrange. Each line
describes its appearance. If the description and the actual
appearance do not agree, reject the board. n
TEXT WITH 200-LINE GRAPHICS: This test is similar to D
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5 - 400-LINE GRAPHICS, 4-BIT PLANES, FULL LUT:
This test verifies the proper performance of several screen
capabilities. Several lines containing self-explanatory messages
are displayed on the screen, each testing a different feature. J i
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