Zeiss HUMPHREY 720i User Manual - page 314

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APPENDIX A

REV. B 02/03 PN 51680-1

HUMPHREY FIELD ANALYZER II -

 i

series

H-2

APPENDIX H

PROBLEM

POSSIBLE CAUSE OR SOLUTION

Touch Screen

Too dark or too light

• Adjust brightness - knob is on right-side of touch screen (back of HFA II) (1)

Wrong button activated when pressed

• Make sure finger is perpendicular to the touch screen (2)

• Try using pencil eraser to make selection (2)

• Perform touch screen calibration (2), (12)

Slow response or no response

• Press and release finger from touch screen in a quicker motion (2)

(remember - button is activated when finger is released)

Out of calibration at start up

• Perform touch screen calibration (2), (12)

- Hold patient response button down at start up to reach touch screen

  calibration procedure (12)

Patient Response Button

Does not beep when pressed

• Turn Switch Beep on - Additional Setup menu (2)

• Check connection to HFA II (1)

• Verify patient is properly pressing and releasing response button (5)

Video Eye Monitor

Disappeared

• Press EYE button (2)

• Eye monitor is only present on some screens (Start of Test, Testing, etc.)

Too dark or too light

• Press “+” to lighten or “-” to darken

Time and Date

Time display on screen is incorrect

• Change by pressing DATE AND TIME on System Setup screen (2)

Date on screen is incorrect

• Change by pressing DATE AND TIME on System Setup screen (2)

Date of birth or test date is

• Change by pressing CHANGE PATIENT DATA on File Functions screen (3, 8)

incorrect on printout

Printer

Does not print

• No power to printer (no lights visible on front panel) (12)

- Check to ensure power cord is attached and check power switch (1)

- Check power to power table (1)

• No paper in printer (12)

B-H Appendex.htp

3/14/03, 3:24 PM

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