Sencore PR570 Isolation Transformer Service and Calibration Info Needed.

[KG7AMV]

Hello, Everyone.

I have looked and I cannot seem to find the Sencore PR570 Isolation Transformer Service and Calibration Info?

Anyone have a copy of this info handy?

I have 2 of them now and want to make sure I have the documents.



Thanks.

[fmashockie]

I can't be of help on the documents, but I just wanted to say these are awesome! I wouldn't mind having one 

I have a Sencore PR-57 that I use constantly.  You don't find too many isolation/variacs in one package.

[KG7AMV]

I did find some High Resolution 600DPI Sencore PR570 Schematic & Block Diagram's Posted them on my Blog.

https://www.stevenrhine.com/?p=132208

So far no luck on the service / calibration info not even form sencore themself..

[Jwillis]

The schematic has expected conditions at the test points. If you have a oscilloscope and  DMN, start from the supply transformer and work your way to the front. Test supply voltages first to each block. Them check inputs to each block then outputs. The data sheets for each component will give operational parameters and limits. For example, the LCD drivers look like ICL71XX series A/D converters which only has the reference adjustment.

Looks kind of straight forward which leads me to believe the reason for the lack of a dedicated service manual.

[KG7AMV]

Jwillis,  You will see at the TP it will say See Note XX we do not have the notes and from past experience in other equipment there is a sequence for adjusting these if required.