This is the Apple Service Guide that covers the vast majority of popular computers at the time (1995-1996). The guide starts with basic safety practices, general troubleshooting, and ports/memory inputs and pinouts. aside from that this is a very comprehensive and extensive guide covering the following Macintosh/Power Macintosh computers; LC/Performa 580CD, 630/640, 630 DOS/640 DOS, 6200/6300, 5200, 5300, 7200, 7500, WGS 7250, 8500, WGS 8550, 9500, and the WGS 500/700. Last but not least is the PowerBook lineup which includes the following; 150, 190, 5300, 2300. There are multiple troubleshooting steps, adjustment steps, parts lists, diagrams, and diagnostic references throughout this guide.