ProfChaos

Thanks. Even though I actually have the original hard copy of the 6100 Owner's Manual, I appreciate the effort. Also, a PDF file is always handy to have at hand.

Even so, I am actually looking for the Marshall 6100 Service Manual, as in the book that technicians use to better understand the assembly and disassembly procedures for the amplifier's boards and connectors. (The Marshall 6100 head is an absolute monster to repair without the help of a factory service manual.)

Service manuals also usually contain sections that describe basic circuit operation and advanced troubleshooting procedures for locating defective components. The most critical--time-saving--section of a service manual, however, is its selection of "assembly drawings." These drawings are illustrations that actually show what component is located where on the various circuit boards. They also show what connector goes to what board, and at what point. This saves oodles and oodles of time by your not having to make hand-drawn assembly drawings in a back-asswards manner as you guess how to remove circuit boards and then later reinstall both circuit boards and connectors.

Thanks for your help.

cheers,
Professor Chaos