Agilent Technologies 1670G Series Service Manual page 140

Troubleshooting
To run the self-tests
To exit the ROM Test, select Done. Note that the status changes to PASSED or
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FAILED.
Install a formatted disk that is not write protected into the flexible disk drive.
8
Connect an RS-232-C loopback connector onto the RS-232-C port. Run the
remaining System Tests in the same manner.
Select the Front Panel Test.
9
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.
Select the Display Test.
10
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.
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