There should be 3 files accompanying this text file .. OB8CAL.ZIP - the calibration procedure from the OB8 service manual, 11 pages/files in .jpg format OB8PARTS.ZIP - the board layout diagrams from the OB8 service manula, 5 pages/files in .jpg format. OB8SCHEM.ZIP - the schematic diagrams from the OB8 servcie manual, 9 pages/files in .jpg format. IF you have any problems with these files, I will have copies on my ftp site. Send me email at newshirt@best.com Hope you find these useful ! Tony Cappellini 2/22/97