As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOTS REPORTED THAT AT 10,000 FT THEY MOVED THE LT BLEED SWITCH FROM CLOSED TO AUTO, NR 1 ENGINE SURGED ABOUT 50 DEG.C WARMER. SHORTLY THEREAFTER A BURNING SMELL WAS PRESENT. THEY CLOSED BLEED TO ENGINE, RETURNED TO NORMAL. MX ORIGNALLY CLOSED AND DISABLED THE ENGINE BLEED VALVE IAW MEL 75-32-2 CAT.C, CONT NR 34630. ALL MX ACTIONS WERE COMPLIED WITH. SUBSEQUENT MX REMOVED AND REPLACED THE LT ENGINE BLEED AIR PRESSURE SWITCH IAW MM 36-10-02.