Kurzweil K2000 Service Manual page 60

SECTION 4
DIAGSO_4.DOC 12/22/92
When the diagnostic test menu is displayed, press the A soft button (the
farthest to the left) at any time to begin the Burn-in test sequence. When
the Burn-in test is selected, the display changes to show the list of tests
included in the Burn-in sequence.
As
each test is completed, the display is
updated to show the result. See Figure 4.4. The Burn-in test is adequate
for testing the unit's major components; if all the Burn-in tests pass, the
unit should be in full working order.
NOTE: An SCSI device must be connected to the unit's SCSI port, otherwise the
SCSI test will fail. This does not necessarily indicate a malfunction of the
SCSI link.
Exit-Break Total-0000 Fail-0000
Figure 4.4.
Burn-in Test Menu
The Burn-in test can be aborted at any time by pressing the EXIT button, then
pressing any button on the front panel to return to the diagnostic test menu
(the display says "Press any
key,"
meaning a front panel button, not one of
the black-and-white keys). It may be necessary to press the EXIT button more
than once, because the K2000 can only recognize switch closures between tests.
Press any front panel button to interrupt the Burn-in test temporarily. The
test will resume when the button is released. Press anyone of the keys, the
test will be interrupted and hold temporarily; it will resume when any front
panel button is pressed.
4.12.3 Selecting a Specific Test
To run an individual test, use the Alpha Wheel to select the desired test from
the diagnostic test menu. The selected test is highlighted in reverse.
Press the ENTER button to run the selected test one time. When the test is
completed, the display will show the result of the test. Normally each test
need only be run once in the attempt to identify failures. Running a given
test continuously is recommended to monitor the K2000's output signal with an
oscilloscope, since many tests are completed too quickly to be monitored in a
single pass.
4.12.4
Continuous Testing
A selected test can be run indefinitely by pressing the B soft button (second
from the left). This will cause the selected test to run until it is
interrupted with the EXIT button. Remember, it may be necessary to press the
EXIT button more than once.
Press any front panel button to interrupt a continuous test temporarily. The
test will resume when the button is released. Press one of the keys, the test
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