As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX FLIGHT NR 2044 - ON TAXI OUT, GOT MASTER CAUTION NR 1 STANDBY HYDRAULIC PUMP HOT. RAN CHECKLIST AND TURNED OFF NR 1 STANDBY PUMP (CAUTION LIGHT REMAINED ILLUMINATED EVEN AFTER SHUT DOWN). MAINTENANCE REPLACED #1 SPU IAW DHC-8-200 MM TASK 29-11-17-400-801, PAGES 401-105. OPERATIONAL TEST GOOD. AIRCRAFT RETURNED TO SERVICE.