These can be accessed from inside the hull through maintenance panels.
2.
The IOAU Maintenance Panel could display the various CAU registers from one or two associated CAU ( s ).
3.
Pictures / illustrations of a 1110 system typical showed the IOAU Maintenance Panel, as the CAU cabinet had no indicator lights.
4.
The IOAU included 8 ( optionally 16 or 24 ) 1108 / 1106 compatible 36-bit Word Channels, and also included the Hardware Maintenance Panel.
5.
The Control / Maintenance Panel was now on the SIU, and provided a minimum of indicator / buttons since the system incorporated a mini-computer, based on the BC / 7 ( business computer ) as a maintenance processor.
6.
It consisted of a Control Console ( Maintenance Panel ), combined Airborne Power Supply, Central Processor, 32, 000 30-bit Memory unit, four Airborne I / O units, Ground I / O unit and cables.
7.
The RSIP kit, built principally by Northrop Grumman Electronic Systems, Baltimore, MD, under a subcontract to Boeing, consists of a new radar computer, a radar control maintenance panel as well as software upgrades to the radar and mission system programs.