As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAXI, THE OUTBOARD ROLL SPOILERS RETRACTED TO THE FLIGHT POSITION. FLIGHT/TAXI SWITCH HAS JUST BEEN MOVE TO FLIGHT POSITION. OUTBOARD SPOILERS REMAINED UP ONLY MOMENTARILY BEFORE RETRACTION WITH ILLUMINATION OF ROLL SPOILER OUTBOARD GND CAUTION LIGHT. RUNNING THE CHECKLIST DID NOT CLEAR PROBLEM. MAINTENANCE REMOVED AND REPLACED THE NR 1 LIFT DUMP VALVE FOR OUTBOARD SPOILERS IAW AMM 27-62-01. LEAK AND OPS CHECKS NORMAL. AIRCRAFT RETURNED TO SERVICE.