As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX - DURING DESCENT, NR 2 CONSTANT SPEED DRIVE WARNING LIGHT ILLUMINATED. DISCONNECTED NR 2 CONSTANT SPEED DRIVE AS PER EMERGENCY CHECK LIST. NR 2 DRIVE TEMP DECREASED BUT REMAINED ABOVE RED LINE. CHECKED CONSTANT SPEED DRIVE OIL LEVEL. DEFERED SYSTEM. AIRCRAFT RETURNED TO SERVICE.