IBM System x3400 Type 7975 Installation Manual page 92

Table 7. 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
I9990305
I9990650
78
System x3400 Types 7973, 7974, 7975, and 7976: Installation Guide
Description
An operating system was not found.
AC power has been restored.
Action
1. Make sure that a bootable operating
system is installed. To determine whether
an operating system is one of the
devices in the startup sequence, run the
Configuration/Setup Utility program (see
the User's Guide on the IBM System
x3400 Documentation CD).
2. Run the hard disk drive diagnostic tests
(see "Running the diagnostic programs"
in the Problem Determination and
Service Guide on the IBM System x3400
Documentation CD).
3. Reseat the following components,
depending on the server model:
v Hot-swap and non-hot-swap models:
a. Hard disk drive
b. Hard disk drive cable
c. Optional adapter cable
v Simple-swap models:
a. Hard disk drive
b. Hard disk drive cable
c. Optional adapter cable
4. 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 and non-hot-swap models:
a. Hard disk drive
b. Hard disk drive cable
c. Optional adapter cable
d. SAS/SATA backplane
v Simple-swap models:
a. Hard disk drive
b. Hard disk drive cable
5. (Trained service technician only) Replace
the system board.
1. Reseat the power cords.
2. Check for interruption of the external
power.
3. Replace the power cords.