What was found
AUTOTHROTTLES WOULD NOT ARM FOR TAKEOFF. ACFT GROUNDED. OPS TEST FAILED DUE TO "NO EEC DATA" FAULT. HAD NR 1 ENG EEC WITH ACTIVE FAULT ON RECENT HISTORY PAGE SAYING CANNOT ACCESS CHANNEL "B". ALSO, LOGGED INTERNAL EEC FAULT CODE 73 10101. REPLACED NR 1 ENG EEC REF MM 73-21-60-400-801-F00, THRU STEPS F(3). ACCOMPLISHED STEPS F(3)A AND 4. REF MM 73-21-60-400-801-F00. COMPLETED STEP 5, MM 73-21-60-400-801-F00. ACCOMPLISHED AUTOTHROTTLE OPS TEST REF MM 22-31-00. OPS TESTED GOOD.