As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A/C PACK LIGHT ILLUMINATED FOR NR 2 PACK. EXTINGUISHES WITH M/C RESET. ACFT GROUNDED. R & R ZONE TRIM AIR MODULATING VALVE IAW AMM 21-61-21, PERFORMED ZONE TRIM AIR MODULATING VALVE INSTALLATION BITE TEST, NO FAULT NOTED, AND LEAK CHECK FOUND NORMAL IN REF AMM 21-61-21, STEP 3. THIS CLEAR MEL 21-32B.