As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAGENTA XB DISPLAYED INTERMITTENTLY IN CLB/DESCENT ADJACENT TO ENGINE NR 2 N2 INDICATION. ALL ENGINE PARAMETERS NORMAL. ACFT GROUNDED. COULD NOT DUPLICATE MALFUNCTION. EEC LOGGED 76-31362 & 73-21352. START LEVER SIG DISAGREE & APL VOLTAGE TO EEC. ACCOMPLISHED FIMS 76-05, TASK 809, 76-11 TASK 801 & 73-22 TASK 808. NO DEFECTS NOTED. AS PRECAUTION R & R NR 2 ENGINE EEC. OPS CK NORMAL REF MM 73-21-60. VERIFICATION FLIGHT SATISFACTORY.