Question about Zeiss Humphrey 740 Visual Field Analyzer

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Why does my zeiss humphrey visual field machine keep shutting down?

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Sounds like a heat, thermal issue. You may have a non- functioning cooling fan somewhere inside. There are several of them so don't be fooled if you hear one of them running. Same issue happens with CPUs on PC computers. Will suddenly shut off if too hot.

Posted on Jul 27, 2015

  • Susan Vanderpool
    Susan Vanderpool Apr 07, 2019

    So how do I fix it? Can I take my machine apart to see which fan is not running? Can I order a replacement fan?

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6ya6ya

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Posted on Jan 02, 2017

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1 Answer

How can I turn off the zeiss Humphrey? only from the shut down button or there is a function from the software?


This is a brand name, not a specific device and model. That said, here is a page describing mode switch in the setup screen using the touch screen for a specific device. I assume a touch screen would have an icon for turning a device off.
Zeiss HUMPHREY 720i User Manual System Setup

Jun 07, 2018 | Zeiss Science & Laboratory

1 Answer

Why no blind spot dectected


The two most common problems when trying to find a blind spot are: A.) Forgetting to patch the eye, and B.) Choosing the correct eye in the machine itself.

Dec 03, 2015 | Zeiss Humphrey 740 Visual Field Analyzer

1 Answer

How do I hook my external laser printer to my humphrey 740?


In the user manual they list some compatible printers that have a 25 pin parallel connector. We use Lexmark Optra E312L with good results. Once you hook it up, you have to go into one of the setup menus to port it over. The user guide tells the procedure.

Oct 08, 2014 | Zeiss Humphrey 740 Visual Field Analyzer

1 Answer

How do I fix the pointer on the touchscreen to be where you touch


You sjould press the patient button and the same time turn it the instrument on keep in button press until you see in tje display the calibration message of the touchscreen

Oct 03, 2014 | Zeiss Humphrey 740 Visual Field Analyzer

1 Answer

CAN THE LIGHT BE TURNED ON IN THE ROOM WHERE THE TESTING IS DONE?


Yes it affect all tje instrument calibration when it is turn on, and when you have patient test the result is afected because the patien has light for the bavk and he is not able to see all the diferents type of lights

Sep 18, 2014 | Zeiss Humphrey 740 Visual Field Analyzer

1 Answer

How can I fix my screen ,will not show anything on the field analyzer 740i? Help please


Did you move the brighness control. It is on the right side of the equipment. If not, it could be the video board inside of the equipment

Aug 05, 2014 | Zeiss Humphrey 740 Visual Field Analyzer

1 Answer

Zeiss humphrey system startup state 19


I believe "state 19" is a weak main illumination bulb. Not sure if it's the same on your 740, but that's what the problem was with our 750i. Even though the bulb appears to be working, they dim over time and won't pass the start up calibration checks. On ours, there is a round access panel on top of the unit to service this bulb. Just be careful removing the bulb and don't bump any of the clear optical wheels. Part # 2660021106082 (for 750i. not sure about 740) Call Zeiss to confirm. Realize this is an old post so info is for future readers.

Mar 27, 2014 | Zeiss Humphrey 740 Visual Field Analyzer

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