Zeiss humphrey HFA II-i series, Field Service Manual

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Humphrey Field Analyzer II - i Appendix I
Confidential and Proprietary
52235C1105 I - 9
Field Service Guide
16) Check that the external brightness knob moves freely and has additional
brightness range.
17) Check that the patient chinrest and headrest move smoothly and completely
up/down and left/right. (Noise will be heard at the end of each motor limit.)
18) Observe the bowl for dirt or other cosmetically unacceptable spots. Clean as
needed.
19) Check the operation of the rear fan, and clean the filter
20) Check that the date is correct and the time is within 2 minutes.
21) Select a patient test. Change parameters. Verify that the central fixation LED,
inner diamond, and outer diamond all function.
22) Turn foveal threshold on (except Model 720 i ). Select size III. Start the test.
Verify that the size III spot is in the center of the inner fixation diamond.
Ensure that the spots are sharply focused and no halo is visible. Test the
patient button for operation.
23) Recall a patient test from your test floppy disk. Display and print the test.
24) Recall a test from the hard disk. Display and print the test.
___ 25) Duplicate a patient test from your test floppy disk to a formatted floppy.
Display the copied test.
26) Copy a patient test from your test floppy disk to the hard drive. Delete that
test from the hard disk.
27) Perform a backup using the Magneto-Optical drive to verify the backup/restore
procedure.
28) Turn power off/on and wait for the Main Menu. No errors should be reported.