Zeiss humphrey HFA II-i series, Field Service Manual

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Appendix I Humphrey Field Analyzer II - i
Confidential and Proprietary
Field Service Guide
I - 8 52235C1105
4) Print the Unit Configuration printout. Verify that all entries are accurate,
based on instrument serial number and model. (Appendix J).
5) Print the System Log printout and then clear the log. Verify that all reported
error conditions have been evaluated/corrected. (Appendix J)
Part II (Refer to the above System Checkout Checklist Guidelines.)
Calibration Checks —
6) Verify that the white/white light intensities are within the specified
tolerances. (Attach the required White Light Verification Data printout to
this checklist.)
7) Verify that the blue/yellow light intensities are within the specified
tolerances. (Attach the required Blue Yellow Light Verification Data
printout to this checklist.)
8) Using the tool stand and fake eye, ensure that the camera is aligned and
centered to the trial lens holder.
9) Using the tool stand and fake eye, verify that the gaze tracking box is within
tolerance.
10) Using the tool stand and fake eye, ensure that all five IR LEDS are
functional. Start a test and initialize gaze tracking. Observe that the three
IR LEDs can be seen on the video image of the fake eye when the trial lens
holder is in the down position (reflex and bowl IR LEDs) and in the up
position (reflex and trial lens holder LEDs).
11) Check that the touch screen response is within tolerance. Verify that patient
data can be entered easily and without error.
12) Verify that the CRT image is within specified tolerances.
13) Enter Exerciser Tests. Run the 30/60 mixed tests for 5 minutes. No errors
should be reported. While the test is running, verify that there is no shutter
noise. Look into the bowl and ensure that there is no shutter streaking.
Operational Checks —
14) Check the CPU battery voltage (in circuit). If the voltage is below 3.0 volts
replace the battery and verify the CMOS settings are correct as per
Appendix E.
15) Verify that the power table moves up and down and that the table top or
slider slides freely in and out. Ensure that the slider is securely fastened to
the table top.