As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 5861 - IAB-BOS - AFTER TAKEOFF EICAS DISPLAYED COOL MESSAGE FOLLOWED BY A TEMP CAUTION MSG ON THE CAPTAINS AND FO''S PFD. SCREENS WENT TO REDUCED VERSION. THE CREW DECLARED AN EMERGENCY AND LANDED AT PHL. MAINTENANCE REINSTALLED CONNECTOR IN JB-2, OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (M)