• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Data Precision 5740 counter

Dudley

New Member
Thread starter #1
This is an ageing piece of equipment but a goody. Has anybody got a manual for this count that contains the full circuit diagram please. All the downloads I have found have had circuit description and block diagrams but no service info or circuit diagram, can anybody please help without it this is just a piece of junk.
 

vtech

Active Member
#2
That is a vintage piece of equipment (circa 1970's) and I happened to have access to the original service manual!

At a time, Data Precision equipment were highly sought after. They were widely used & calibrated for maintenance due to it's build quality & precision design.
The Company was absorbed and they have mainly been purged from our system but many of the "yellowed paper" original service information still exist in the calibration dept.

If you are going to attempt, due to the age, I'd say Electrolytics and switch contacts should be first in order..
4oo DPI scan of three main sections listed below.
Best to download each separate page.
You can view/magnify it in any PDF viewer;

https://drive.google.com/file/d/1fmc-0c1VsetIstAgUyzYCVLXsof57HTR/view?usp=sharing
https://drive.google.com/file/d/1mhZA_ZCKUjQmu4DHZzPPr7bZhFmqQwJy/view?usp=sharing
https://drive.google.com/file/d/1_ep_JiiPCobtn99ofPvqq-0Sjki1ImjO/view?usp=sharing
 

Dudley

New Member
Thread starter #3
Hi vtech, That is absolutely fabulous it is exactly what I need. At this age your suggestions make a lot of sense, at present it seems to be free running and an input appears to have no effect. I can't thank yo enough for the information and if you have anything else you feel may be useful it would be really appreciated. I knew somebody out there had to have the info I needed
 

Dudley

New Member
Thread starter #4
Hi vtech would you have access to the printed circuit board layout, it would make life a lot easier as about 6 of the ic,s are not identified and I am not great at chasing printed circuit tracks?
Thanks
 

Latest threads

EE World Online Articles

Loading

 
Top