System Physical Description
8500C/8500C+ System Maintenance Manual 1-3
The 8500C/C+ printer/disk drive assembly is composed of the following items:
• Printer assembly:
 prints data and solutions on paper.
• Printer board:
 interfaces with the printer. 
• Disk drive assembly:
 uploads software from the diskette to the balancer/analyzer assembly. 
• Distribution board:
 interfaces with the disk drive assembly and balancer/analyzer assembly. 
• Power supply:
 generates operating voltages for the printed circuit boards in the balancer/
analyzer assembly and printer/disk drive assembly. 
• Harness assembly:
 interconnects the printed circuit boards, printer assembly, and disk drive 
assembly.
Figure 1-1. 8500C/C+ Balance/Analyzer