As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOI- FLIGHT 4277- ON CLIMB, THE NR 2 ENGINE FAN VIBRATIONS REACHED 1.9. AFTER COMPLETING THE CHECKLIST AND REDUCING POWER, THE VIBRATION DIMINISHED INTO THE GREEN AREA. MAINTENANCE C/W A TANG LUBE OF THE FAN BLADES IAW 72-21-02-640-801-A01 AND REPLACED THE FAN BLADE PINS. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.