IBM 6151 Maintenance And Service Manual page 385

POST Errors 5c or 05 PIC 9810
Use this
PIC
to analyze the 981 SRA number.
Step 1
1. Remove the top cover. If needed, see Section 4.
2. Plug the external power cable into the outlet.
IS THERE A BOARD IN SLOT B OR D?
NO Go to "Step 5" on page 3-9810-5.
YES
Continue on the next page.
AJZBOH5
(6/88) Problem Isolation Charts 3-9810-1