As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT FMC FAILED WITH "VTK" ON LH ND-AT GATE DURING BOARDING. GROUNDED - YES. (RESOLVED ON W/O: 1968283 TASKCARD: N/R-00002 ) LEFT FMC BITE UNAVALIBLE. REMOVED & REPLACED FMC #1 PER AMM TASK 34-61-02/401. OPS CHECK GOOD. FMC NOW OPERATES NORMALLY. ALL DATA LOADED. ALL LLM TESTS PASS. CLEARS MEL 34-36J. PLACARDS REMOVED. FMC SWITCH SET TO NORMAL. SEAMC JOE NOTIFIED.