What was found
SEA- "AUTO PRESS" CAUTION MESSAGE AFTER T/O. SELECTED "MAN PRESS." AT THAT TIME WE GOT AN "AUTO PRESS 1/2 FAIL". RETURNED TO THE FIELD AND ACCOMPLISHED A UNEVENTFUL LANDING. FOUND "CPC PNL FAILED" FAULT IN THE MDC. MDC STATES THAT THE CABIN PRESS CONTROL PANEL IS NOT ABLE TO PROVIDE CABIN PRESS DATA. THIS WAS NOTED ON DATA LINE 350 BIT 13 "CPCP PRESS SNSR FAIL." CYCLED SHIP POWER. FAULT DID NOT RETURN. COMPLIED WITH CRJ700 FIM TASK 21-33-01-810-804-A01. FAULT DID NOT RETURN. COMPLIED WITH OPS TEST OF THE CABIN PRESSURE CONTROL PANEL IAW CRJ-700 MM TASK 21-33-01-710-801-A01. FAULT DID NOT RETURN. OPS CHECK GOOD. PRESSURIZED AIRCRAFT IN MANUAL MODE. NO FAULTS INDICATED. CHECKS GOOD. NO PARTS REPLACED AT THIS TIME. ALL FAULTS CLEARED AND REMAIN CLEARED. OP TESTS CHECK GOOD. RETURNED TO SERVICE.