B737 Next Generation Undifferentiated
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 114; Flight Crew Total 869; Flight Crew Type 869
Confusion; Human-Machine Interface; Troubleshooting
Aircraft Equipment Problem Critical
Flight Crew Rejected Takeoff; General Flight Cancelled / Delayed
Aircraft
As we taxied out I saw the Speed Brake Do Not Arm light flicker once as we taxied out of the ramp area and once about halfway to the runway. I pressed the speed brake forward to make sure again that it was [in the] down detent. It was in the correct position. The light did not come on again. We ran all of the checklists and there was nothing unusual. We ran the final items on the before take off checklist. Everything was operation normal. We were cleared for take off. The First Officer was flying. He said check thrust and I took the throttles for take off. As we rolled down the runway around 60 To 70 kts.; I saw the speed brake do not arm light flicker then turn on steady. I also heard the configuration horn go off. I called reject; I have the aircraft around 75 to 80 kts. I pressed the manual brakes around 60 kts. to prevent the violent stop.The First Officer made the calls to Tower and remain seated calls. I slowly taxied off the runway. We called to the back to make sure everyone was seated and ok. The Purser said everything was fine. We did not ask for assistance since we were in the low speed regime. We ran the rejected Take Off checklist from the QRC. The First Officer ran his after landing flows. We asked Ground for a spot to work the problem. I called Maintenance with Operations.  I talked with [someone] who said this was a known anomaly (which I did not know about). He had me set the flaps to one then he had me activate the number two stick shaker. He said that we were good to go. The light never came on again. I made a call to the Flight Attendants and the passengers. We ran all of our checklists again and taxied back to the runway for take off. We took off without incident and landed [at our destination].
Shortly after applying power for takeoff; the SPEED BRAKE DO NOT ARM light came on twice. It came on briefly a first time; went away and turned back on and the Captain initiated the Rejected Takeoff. The decision to reject was performed around 80 kts. and we followed company procedures.
Flight Crew reported a rejected takeoff due to a Speed Brake Do Not Arm light coming on.