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MXR - 117 Flanger [schematic]
Posted: 12 Jan 2018, 21:22
by jaycobie
Official service schematic and component layout of the vintage MXR 117 Flanger
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
Posted: 13 Jan 2018, 00:58
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
Posted: 13 Jan 2018, 08:31
by jaycobie
Ah, I see.
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
Posted: 13 Jan 2018, 11:16
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