Drop into normal space. Call up the Status page (key 4). Move across to the FUNCTIONS tab. Scroll ALL the way down to the bottom, and then up 1 line (the bottom option is "Self Destruct" (don't press it!!!)), to Reboot/Repair. Make sure that is highlighted, and then click on it. Everything on your ship will shut down (so you will go onto Emergency Life Support), and then slowly boot up, while evaluating the systems. It will scavenge 2% from a functional system to repair 1% of the Sensor Suite (that is all that Reboot/Repair can do, 1% only per 'destroyed' system), which is enough to allow you to get to a Station with Repair facilities.