Color LaserWriter 12/600 PS service technical

Color LaserWriter 12/660 PS is the extended version of the original color LaserWriter 12/600 PS, 12/660 engine and plastics are identical to the original in all respects, and all output and the number of parts for service apply equally to both printers. The only differences between the two versions are in packages and setting, ROM and RAM in I/O controller board and driver software. Color