Agilent Technologies 1664A, Service Manual

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For a Single run, the test runs one time, and the screen shows the results.
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To exit the ROM Test, select Done. Note that the status changes to Passed or Failed.
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Install a formatted disk that is not write protected into the disk drive. If option 020
is installed, connect an RS-232C loopback connector onto the RS-232C port. Run the
remaining System Tests in the same manner.
If option 020 is not installed in the 1664A, the RS-232C test will return a FAILED status.
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Select the Front Panel Test.
A screen duplicating the front-panel appears on the screen.
a Press each key on the front panel. The corresponding key on the screen will change
from a light to a dark color.
b Test the knob by turning it in both directions.
c Note any failures, then press the Done key a second time to exit the Front Panel Test.
The test screen shows the Front Panel Test status changed to Tested.
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Select the Display Test.
A white grid pattern is displayed. These display screens can be used to adjust the display.
a Select Continue and the screen changes to full bright.
b Select Continue and the screen changes to half bright.
c Select Continue and the test screen shows the Display Test status changed to Tested.
Troubleshooting
To run the self-tests
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