Tenma Universal Test Center 72-1005 (AKA Metex MS-9140) Manual/Schematic FOUND - Page 1
Forum section: electronics / testgear

author: t1d
author_rank: Super Contributor
timestamp: January 22, 2017, 11:28:28 pm
content: Kudos to Maureen Lipps, of MCM Electronics (http://www.mcmelectronics.com/), for providing the files! The website is not allowing me to post the files, for some reason... So, just send me a private message, and I will send you the files.Title says it all...Just got an amazing deal on one of these, but it did not come with the manuals...I did not find anything on Google...MCM Electronics did not have it in their libraries... I have sent an email to them...Any help would be greatly appreciated!Thank you!

author: bitseeker
author_rank: Super Contributor
timestamp: January 23, 2017, 02:44:00 am
content: Have a gander at this thread:https://www.eevblog.com/forum/testgear/tenma-universal-test-center-72-5085/RJ has a Universal Tester, though it may be different from yours. Nevertheless, he offered to email the manual and you can see what may be similar enough.

author: t1d
author_rank: Super Contributor
timestamp: January 23, 2017, 07:17:53 am
content: Thanks for the lead, Bitseeker! I am not an EE, so I really need the exact model. But, please keep the suggestions coming!I think my unit was also sold as a Metex MS-9140. Here is a related thread:https://www.eevblog.com/forum/reviews/metex-universal-combined-test-instrument-systemsstations-a-look-inside/But, there is not a complete download of the manual, there...

author: bitseeker
author_rank: Super Contributor
timestamp: January 23, 2017, 07:27:40 am
content: What are you seeking from the manual? If you're not an EE and don't intend to repair it, then I assume that you want to know its basic functionality and methods of operation. That kind of information will likely be very similar between models.Characteristics that differ between models might be things such as the maximum frequency of the function generator, extra features of a more expensive version, etc., most of which would be apparent when you run into the limitations or don't find the features. Nevertheless, the fundamental concepts and operation will similar. Hence, my original recommendation.Note, too, that others have said that the manuals are sparse. So, they apparently don't go into great detail about the instruments that comprise the combo. All the more reason to take a look at any that you can, to see what you're up against as far as even getting the information you desire should you be able to locate the manual for the correct model.

author: Pinkus
author_rank: Frequent Contributor
timestamp: January 23, 2017, 09:13:54 am
content: I have the schematics of the Metex MS 9150 available if this helps. It is quite similar to its predecessor MS 9140.If you are interested I can send it to you, just send a PM with your e-mail adress.

author: t1d
author_rank: Super Contributor
timestamp: January 23, 2017, 04:44:38 pm
content: Quote from: bitseeker on January 23, 2017, 07:27:40 amGreat point and suggestion, Bitseeker... Yes, I need to learn the basic concepts of the frequency counter. I am familiar with the other functions. I also wanted to have the schematic for repairs, if necessary. I might be able to handle a repair, with that information.I have located the user manual and schematic. See my edit of the first post.Thank you for your interest and help!

author: t1d
author_rank: Super Contributor
timestamp: January 23, 2017, 04:46:45 pm
content: Quote from: Pinkus on January 23, 2017, 09:13:54 amHow very kind of you to offer this help! I have located the user manual and schematic. See my edit of the first post.

author: bitseeker
author_rank: Super Contributor
timestamp: January 23, 2017, 08:26:40 pm
content: That's great news that they sent them to you. It's rather rare for companies to do that these days. Thanks for the update.