What was found
SMOKE FROM F/O YOKE FROM THE TOP LEFT SIDE, CREW COULD SMELL AND SEE SMOKE. SMOKE CONTINUED AT LEVEL FLIGHT @ 11000' AFTER DESCENDING TO 50000' SMOKE WENT AWAY, SMOKE SMELL STILL IN COCKPIT-TROUBLESHOOTING FOUND FIRST OFFICERS MEMORY REMINDER BACKLIGHT CAUSE AND CIRCUIT BREAKER POPPED. REMOVED AND REPLACED F/O MEMORY REMINDER IAW AMM 33-11-00. OPS CHECK GOOD. PLACARD REMOVED. THIS CLEARS DMI 2107048 SAM-027 CLEARED. MXC NOTIFIED.