Notifier CHS-M3 Mounting Chassis

The CPU mounts in chassis CHS-M3 in the top row of the cabinet. The CPU and its optional display occupy the left half of the chassis (positions 1 and 2, see right picture illustration). Positions 3 and 4 of CHS-M3 can hold up to four layers of equipment including option boards and annunciators (door-mounted in front of CHS-M3).