What was found
L ENG BLEED OFF EICAS ON CLIMBOUT. AFTER QRH DUCT PRESS DIFF 30P SI PERFORMED ASCTU BITE CHECK REF FIM 36-00-801. FOUND FAULT 36-13102. PERFORMED FIM 36-10 TASK 819. NO FAULTS NOTED AT THIS TIME. NEXT STEP TO REPLACE ASCTU. NIS IAD. PERFORMED FIM 36-20 FAULT TREE 813. DUCT AND MANIFOLD PRESSURE INDICATIONS OPS CHECK GOOD. VALVE, ASSY, HI OFF 64-3611-9-0007 2121 ON 64-3611-9-0014 5050 VALVE, ASSY, HI OFF 64-3611-9-0007 2121 ON 0000 REPLACED PRV PER MM 36-11-18. ACCOMPLISHED HIGH POWER RUN. PRESSURE NORMAL, NO BLEED TRIP PARTS USED: 64-3611-9-0007,QTY :1 ADD EMP:094194 ROTABLE PARTS CHANGE WAS INDICATED - TT # 1802406 SN OFF 2121.