McIntosh MAC-1900 , Original Service Manual • PDF format suitable for Windows XP, Vista, 7 , 8 , Linux and Mac • Chassis & Electrical • Wiring diagrams • Most Complete Service Manual Available • Numerous Illustrations & Schematics • Technical Diagnostic Procedures • Disassembly & Installation Procedures • Written by the Manufacturer • Used by the Dealership Technicians • You can print the specific pages you need to accomplish the repairs required