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Vintage MXR Flanger official schematic

PostPosted: 12 Jan 2018, 22:22
by jaycobie
Official service schematic and component layout of the vintage MXR 117 Flanger

https://www.scribd.com/document/3690227 ... -Schematic

This is one I haven't found posted elsewhere (for free), so here it is.
Marked as official, and I can confirm that it looks to be spot on compared to mine.

Re: Vintage MXR Flanger official schematic

PostPosted: 13 Jan 2018, 01:58
by Scruffie
Says it's been removed but i'd be interested to see what additional information it has over the schematic available.

Re: Vintage MXR Flanger official schematic

PostPosted: 13 Jan 2018, 09:31
by jaycobie
Ah, I see.

https://www.scribd.com/document/3690476 ... -Schematic
https://drive.google.com/file/d/1vpHJan ... sp=sharing

Here is a temporary google drive link and re-upload on scribd for a PDF-reprint of the file to avoid further conflicts.
I don't have time to edit it into a picture or two right now but I'd appreciate it if someone else could help with that.
I don't want the quality to degrade right off the bat but it got a bit stretched when I reprinted it in a PDF printer.

Re: Vintage MXR Flanger official schematic

PostPosted: 13 Jan 2018, 12:16
by jaycobie
I just realized that my version IS different, but it's only because it's a different version of the board itself.
The schematic shows the 4001 version of the Flanger, while I have the 3001 version.

The position of C18 is the only physical difference I can find on my own, 3001, 230v version
The other difference I can see is U3 being CD4013AE on version 4001 while my 3001 has CD4013BE. Probably just a minor quality difference in the chips
C21 is, according to the schematic, variable. My 3001 has a 33pF cap (see picture below)
Don't have a reason cross-checking all the resistors and capacitors, but for anyone that's interested, I just like documenting this sort of stuff