ACR X HAD LTSS FROM CPR Y. SYS ERROR.

Narrative

I WAS TRAINING A PERSON IN THE RADAR POS AT BOSOX SECTOR IN AREA C IN BOSTON CENTER. WE HAD A FULL PERFORMANCE RADAR ASSOCIATE IN OUR D-SIDE. 30 MINS PRIOR TO THE INCIDENT; TFC WAS MODERATE WHICH THE RADAR TRAINEE WAS HANDLING SATISFACTORILY. (8-15 ACFT). ACR X BOS DEP AT 160 DIRECT BAF AN OVERFLT TO LGA. CPR Y WAS A PVD DEP (REQUESTING FL390) WHICH WE CLBED TO 110 AND TURNED 20 DEG L FOR TFC AT 120. ONCE WE CLRED THE 120 TFC WE CLBED TO 150. TFC HAD BUILT IN THE HFD VICINITY WHICH THE RADAR TRAINEE WAS SATISFACTORILY HANDLING. THE RADAR ASSOCIATE THEN RECEIVED A CALL FROM CTR SECTOR ON A POINT OUT ON AN ACR ORH DEP CLBING TO 160 DIRECT CTR. THE RADAR ASSOCIATE APPROVED THE POINT OUT. I TURNED TO THE RADAR ASSOCIATE AND SAID CALL THEM BACK AND TELL THEM UNABLE DUE TO TFC IN VICINITY AND ALSO TO MAKE SURE CTR SECTOR HAD A POINT OUT ON CPR Y AT 150; THE GET CTL REF ACR X AND OTHER ACR. THE RADAR ASSOCIATE COMPLETED THE CALL AND SAID 'IT'S ALL SET; CTR IS WATCHING CPR Y.' THE RADAR TRAINEE THEN TURNED CPR Y 30 DEGS R TO INITIATE CLB ONCE ACR X AT 160 WAS CLR. NEXT UPDATE ACR X DATA BLOCK SHOWED 160 DSNDING TO 140. I TOLD THE RADAR ASSOCIATE TO FIND OUT WHAT CTR WAS DOING REF CPR Y WHICH WE HAD TURNED 30 DEG R. CTR TOLD THE RADAR ASSOCIATE THEY WERE EXPEDITING THE ACR Y TO 140. ONCE THEY WERE CLR WE CLBED CPR Y TO 230. SEPARATION HAD BEEN LOST WHEN CTR DSNDED ACR X TO 140 WITH CPR Y IN CLOSE PROX AT 150. IT WAS MY UNDERSTANDING (AND ALSO THE RADAR TRAINEE'S) THAT ALL COORD WAS COMPLETED BY THE RADAR ASSOCIATE AND THAT CTR KNEW WHAT WE WERE DOING WITH CPR Y REF ACR Y COULD HAVE BEEN PREVENTED WITH BETTER COM AND COORD BTWN THE SECTORS INVOLVED AND BTWN THE RADAR ASSOCIATE AND RADAR POS.