What was found
AFTER LANDING PRESSURE CONTROLLER DISPLAYED AUTO FAIL + ALTN. SELECTED ALTN WITH PRESSURIZATION MODE SELECTOR AND AUTO FAIL EXTINGUISHED. GROUNDED - YES. CPC 1 SET FAULT 011: OFV LRU FAIL. CPC2 INDICATES NO FAILURES. GVI ACCOMPLISHED OF OFV OBSERVING NO OBSTRUCTIONS. ACCOMPLISHED PRESSURIZATION SYSTEM GROUND TEST PER B737-900 AMM 21-31-00 W/ NO FAILURES INDICATED. OBSERVED VALVE WITH CPC 1 IN COMMAND AND OBSERVED CORRECT FULL OPENING WITH NO BINDING. VERIFIED THAT BOTH CPC CHANNELS MOVE VALVE TO OPEN ONCE SWITCH TAKEN OUT OF MANUAL, VALVE HAVING BEEN CLOSED IN MANUAL.