This brief description of the microcomputer service and maintenance system at Miami Dade Community College/North includes a series of hints, tips, and lists of information sources, suppliers, and regulatory codes that could prove helpful to school districts that wish to conduct on-site repair of computers. These include: (1) cleaning materials suppliers; (2) diagnostic software producers; (3) sources of information for low-voltage AC surge suppression and/or transient voltage suppression devices; (4) suppliers of anti-static products; (5) suppliers of halogen fire extinguishers; (6) sources of information on regulatory codes; (7) tips for computer safety; (8) sources of technical assistance from manufacturers; (9) a copy of the Illinois Vocational Curriculum Center's preventive maintenance checklist; (10) directions for installing and removing the disk drive cable from the analog card; and (11) directions for manipulating the drive speed adjustment screw. (JB)