Mac Tools Et 955 Manual

The streamlined design of the EM112 is a great addition to your toolbox.For more in-depth jobs, the EM721 is loaded with over twenty options and features and EM823 adds heavy-duty capabilities.We also offer the EM680, which is capable of performing insulation testing.CONNECTFacebook:Twitter:Instagram. The increasingly complex electronics systems on modern vehicles make the Mac Tools line-up of multimeters an essential tool for every technician.Performing simple voltage and continuity tests? Mac em710 multimeter owners manual free.

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Mac Tools Et 955 Manual

Mac Tools Et 955 Manual 2017

I have an old Mac Tools ET955 multimeter. It is also identical to a unit provided by Matco. The circuit board has the inscription 'Actron 400-1486' on the solder side. The problem is it constantly displays the count of '23' or '2.3' or '.23' with nothing connected, depending on the range selector. A 9-volt battery displays '+14v' or '-24v' depending on polarity. Adjusting the pots has no effect. I removed the MM5601BN quad 2-input NOR IC and the 7555 timer and the display reverted to all zeroes. So I assume either the 7555 timer chip or the 5601 chip is bad - not sure.
Anyway, does anyone have any suggestions on what could be the problem and where I could get a schematic and repair manual for the unit. I assume it is American made.
Thanks.

Mac Tools Et 955 Manual Pdf

In this place you will find all the manuals available for equipment of the manufacturer MAC Tools, which can be found in our database. User manuals MAC Tools are sorted by the product category. Locate the category that interests you, and then the device made by MAC Tools. Mac Tools® Diagnostic line of products are capable of performing critical diagnostics, reprogramming and quick code information. Show All Diagnostics and Testing Products Code Readers.