Shield circuitry

The force fields protecting the Axalon need the shield circuitry to regulate the shield's power when absorbing attacks. If the circuitry fails, a single powerful strike can permanently blow out the shield generators.

Fiction

Beast Wars cartoon

During a Predacon attack on the ship, Rattrap saw that the shield circuitry had been hit and ordered Dinobot to get it back online. Dinobot naturally ignored the order because he was busy fighting Megatron. When pleading didn't work, Rattrap was forced to run for the shield controls himself, and fortunately managed to get there before Terrorsaur's weapons fire hit the Axalon. Chain of Command