A lot of this will be cut and paste from similar previous models anyway. These are drawn after the fact to document the design. No one sat down with a pad and pencil and drew these things during design. COnsider the Peavey 5150 and their 5150-2 (the current 65+) The 5150 drawing set is like this Marshall (sorta) while the 5150-2 is one large schematic. I would prefer one large drawing of the whole amp, sure, but once you understand what they are doing, I find them darn consistent. I don't need a schematic for repair, there are some aspects of the tone I like so I was trying to see what was going on in the design. Yes, it is clumsy.Enzo, Yeah I know why they do it that way, but they don't do it well, it must have been a nightmare for the PCB layout guy. Note just below those is a legend stating: CON14->COIN6 CON13->COIN2 (etc) All above on JCM2-61-00 That shows the matching connector on the 61-00 board, which is the preamp control panel board. I am looking at the DSL100 drawing for the main tube board, JCM2-60-00 and just to the right of V1 are CON13,CON3,CON14. Once in a while I do when trying to find a break in the signal path. How is is the EVH 5150 III compared to a Marshall? Just Google up a wiring diagram for a 4x12 and you'll be set. Usually there is also a reference to the board number Unless someone removed all the various jumper cables inside, I rarely need to sort all that out. SO when the signal leaves for example the main tube board to go to the front panel controls, it leaves via CON1 which is conected to CON14 (or whatever) on the front panel board. The schematics are for boards, not the entire system.
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March 2023
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