Zeiss Humphrey 740 Visual Field Analyzer - Answered Questions & Fixed issues

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.

Zeiss Humphrey... | Answered on Jun 23, 2016 | 865 views

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.

Zeiss Humphrey... | Answered on Jul 27, 2015 | 755 views

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.

Zeiss Humphrey... | Answered on Apr 07, 2019 | 565 views

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.

Zeiss Humphrey... | Answered on Jul 27, 2015 | 579 views

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

Zeiss Humphrey... | Answered on Oct 30, 2014 | 202 views

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

Zeiss Humphrey... | Answered on Oct 30, 2014 | 360 views

erro 99

Zeiss Humphrey... | Answered on Oct 01, 2014 | 227 views

is the cooling fan turning?

Zeiss Humphrey... | Answered on Oct 01, 2014 | 148 views

The trouble is with the CPU. It needs to be replaced

Zeiss Humphrey... | Answered on Sep 05, 2018 | 783 views

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

Zeiss Humphrey... | Answered on Sep 10, 2014 | 510 views

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

Zeiss Science &... | Answered on Jun 16, 2018 | 653 views

The battery is soldered to the CPU. People from Zeiss Germany said that it needs to replace all the CPU. Now a days there is no longer spare parts for that instrument. I recommen you just change the day and time each time you turn it on

Zeiss Science &... | Answered on Jan 05, 2017 | 1,764 views

Unfortunatly you should contact Zeiss representative for load again the completecomplete Visucam programprogram.

Zeiss Science &... | Answered on Oct 01, 2014 | 520 views

This is very funny. I was just looking to find a similar solution for my laboval. Haven't measured it yet, but it keeps blowing the light bulbs. Do you run it at 110 or 220V?

Zeiss Science &... | Answered on May 19, 2013 | 760 views

That is an autoclave and peoples life and health depend on it. Please contact the manufacturer at +39 0445 329811

Science &... | Answered on Sep 27, 2019 | 68 views

1. Always clean the slide. 2.Make sure that the fine and the coarse adjustment knobs do not scratch the slide by handling them gently.

Science &... | Answered on Sep 05, 2019 | 74 views

Turn it on and bring up the temperature. The pressure inside will increase as the temperature increases.

Science &... | Answered on Aug 19, 2019 | 115 views

The fault table is on page 15 of the following document.


Further support may be channeled through the distributor. As with many devices, it is suggested to have mainteance and repair done by personnel trained specifically in such for the devices. There is quite a bit of information in this manual one might wade through Page 28 lists error codes and error 2 listed refers to door open during cycle.

UK Customers Eschmann Equipment, Peter Road, Lancing, West Sussex BN15 8TJ, England. Tel: +44 (0) 1903 765040. Fax: +44 (0) 1903 875711. Overseas Customers Contact your local distributor. In case of doubt contact Eschmann Equipment.

Science &... | Answered on Jun 19, 2019 | 93 views

Each letter refers to a cardinal direction North West East South, so press n e w n e w s.

Science &... | Answered on May 18, 2019 | 2,716 views

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