Alignment Raster - Control Data Corporation CDC CC63X Hardware Maintenance Manual

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Test 2 is similar to test 1, but test 2 does not perform the
internal modem UART or loopback checks if the terminal is
online. If an error occurs in test 2, an error flag is set.
•
NOTE
This test can be initiated fram the
keyboard in local CYBER mode or upon
receipt of the Initiate Test Command
from the host during online opera-
tions in CYBER mode. The test can
be used to aid in the isolation of
intermittant terminal problems.
Refer to procedure 2 for initiation.
Host-initiated - At the completion of the test, if the
error flag is set, an error response is sent to the
host. The error mesage will not remain on the screen.
If the error flag is not set, a positive response is sent
to the host and the screen is cleared.
• Locally-initiated - If the operator holds down the CTRL
key and presses the = key and the V key while in local
CYBER mode, the test will be run. As long as no errors
are detected, the test will loop and keep running. It
can be cleared by pressing RESET. If an error occurs,
the test is halted, displaying the failure, and the RESET
switch must be pressed to exit.
Test 3, CRT Alignment, Touchpanel, ROM, LED, and Keyboard Tests
Test 3 is initiated if the operator presses the F8 key while the
mode selection menu is displayed. This test performs the
following checks:
• Graphics option - If this option is present, the graphics
video will be enabled and a pattern of every other dot .
will be displayed. This pattern will alternate between a
480 and 512 vertical line display. Pressing any key will
exit the graphics display and continue the test.
• Alignment Raster - This test clears the display and
enters an alignment pattern around the outer edge of the
display area.
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