IBM System x3500 Service Manual page 145

v Follow the suggested actions in the order in which they are listed in the Action column until the problem
is solved.
v See Chapter 3, "Parts listing, System x3500 Type 7977," on page 41to 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.
Lit light path
diagnostics LED with
the system-error or
information LED also
lit Description
CPU A microprocessor has failed, is
missing, or has been incorrectly
installed.
Note: (Trained service technician
only) Make sure that the
microprocessors are installed in the
correct sequence; see "System
board and microprocessor" on page
90.
S_ERR Reserved
VRM A dc-dc regulator has failed or is
missing.
Note: This error is for either the
VRM or integrated VRD. If the VRD
has failed, the system board must
be replaced by an trained service
technician.
SERVICE There is a fault in the Remote
PROCESSOR BUS Supervisor Adapter II SlimLine.
Action
1. Check the BMC log or the system-error log to
determine the reason for the lit LED.
2. Find the failing, missing, or mismatched
microprocessor by checking the LEDs on the
system board.
3. (Trained service technician) Reseat the failing
microprocessor
4. Replace the following components one at a time,
in the order shown, restarting the server each time:
a. (Trained service technician only) Failing
microprocessor
b. (Trained service technician only) System board
1. Check the BMC log or the system-error log to
determine the reason for the lit LED (for a VRM).
2. Find the failing or missing VRM by checking the
LEDs on the system board.
3. Install any missing VRMs.
4. Reseat the following components:
a. Failing VRM
b. (Trained service technician only)
Microprocessor associated with the VRM
5. Replace the following components one at a time,
in the order shown, restarting the server each time:
a. Failing VRM
b. (Trained service technician only)
Microprocessor associated with the VRM
c. (Trained service technician only) System board
1. Reseat the Remote Supervisor Adapter II SlimLine.
2. Update the firmware for the Remote Supervisor
Adapter II SlimLine (see "Updating the firmware"
on page 13).
3. Replace the Remote Supervisor Adapter II
SlimLine.
135
Chapter 5. Diagnostics