v Check the operator information panel system-error LED; if it is
flashing, check the light path diagnostics LEDs (see “Light path
diagnostics” on page 101).
v Check for the following correct responses:
– A single beep.
– Readable instructions on the main menu.
DID YOU RECEIVE THE CORRECT RESPONSES?
005 No. Find the failure symptom in “Problem isolation tables”; if
necessary, see “Solving undetermined problems” on page 156.
006 Yes. Run the diagnostic programs (see “Running the on-board
diagnostic programs” on page 111).
v If you receive an error, see “Diagnostic error codes” on page 112.
v If the diagnostics programs were completed successfully and you
still suspect a problem, see “Solving undetermined problems” on
page 156.
If the server does not turn on, see “Problem isolation tables.”
Important: If the server has a baseboard management controller, clear the BMC
log and system-event log after you resolve all conditions. This will turn off the
information LED and LOG LED, if all conditions are resolved.
(Trained service technicians only) Checkpoint codes
Checkpoint codes give the check that was taking place at the time the system
stopped; they do not provide error codes or suggested replacement parts. The
checkpoint display will indicate where the server has stopped without waiting for the
video to initialize at each startup during problem isolation.
There are two types of checkpoint codes: CPLD hardware checkpoint codes, and
BIOS checkpoint codes. The BIOS checkpoint codes might change when the BIOS
code is updated.
The checkpoint display for the System x3850 is located on the I/O board.
Checkpoint codes can be found at http://w3.pc.ibm.com/helpcenter/infotips/techinfo/
MIGR-58350.html.
Problem isolation tables
Use the problem isolation tables to find solutions to problems that have definite
symptoms.
If you cannot find the problem in the error symptom charts, go to “Running the
on-board diagnostic programs” on page 111 to test the server.
If you have just added new software or a new option and the server is not working,
use the following procedures before using the problem isolation tables:
1. Check the light path diagnostics LEDs on the operator information panel (see
“Light path diagnostics” on page 101).
2. Remove the software or device that you just added.
3. Run the diagnostic tests to determine whether the server is running correctly.
4. Reinstall the new software or new device.
88 IBM System x3850 Type 8864: Problem Determination and Service Guide
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