Table 4. Abbreviated list of POST error codes (continued)

v Follow the suggested actions in the order in which they are listed in the Action

column until the problem is solved.

v See the parts listing in the Problem Determination and Service Guide to determine

which components are customer replaceable units (CRU) and which components
are field replaceable units (FRU).

v If an action step is preceded by “(Trained service technician only),” that step must

be performed only by a trained service technician.
Error code Description Action

I9990301 Hard disk drive boot sector error. 1. Reseat the following

components, depending on the
server model:
v Hot-swap models:
a. Hard disk drive

b. SAS/SATA controller

v
Simple-swap models:
a. Hard disk drive

b. Hard disk drive cable

2. Replace the following

components one at a time,
depending on the server
model, in the order shown,
restarting the server each time:
v Hot-swap models:
a. Hard disk drive
b. Hard disk drive
backplane
c. SAS/SATA controller
d. (Trained service
technician only) System
board
v
Simple-swap models:
a. Hard disk drive
b. Hard disk drive cable
c. (Trained service
technician only) System
board
36 IBM System x3250 Types 4364 and 4365: Installation Guide