As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FL270 AND .80 MACH, UPON COMP OF THROTTLE ALIGN CK AND RECYCLING OF NR 1 AND NR 2 ENG BLEED S CABIN PRESS BEGAN TO CLIMB AT 500-1000' FPM. COULD NOT STOP CLIMB AND APPROACHING 10K CAB PRESS WE WERE FORCED TO DESCEND TO 10K' AND DIVERT INTO DSM. IAW QRH ATTEMPTED TO STAB CABIN PRESS IN BOTH STANDBY AND MANUAL MODES