Table of Contents
Advertisement
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 Problem Determination and Service Guide on the IBM Documentation CD 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.
Lit light path
diagnostics LED with
the system-error or
information LED also
lit
Description
Microprocessor/
A hardware configuration error has
memory/VRM
occurred. (This LED is used with the
configuration (CNFG)
MEM, VRM, and CPU LEDs.)
VRM
A VRM is missing or failed.
Action
1. (The system error LED, CPU LED, and CNFG LED
are lit when POST detects a microprocessor
mismatch.) (Trained service technician only)
Remove the microprocessors and install two
microprocessors of the same cache size, type, and
clock speed.
2. (The system error LED, MEM LED, and CNFG
LED are lit when POST detects an invalid memory
configuration.) Remove and install supported
DIMMs (see "Installing a memory module" on page
86).
3. (The VRM LED and the CNFG LED are lit when
POST detects a missing VRM for the second
microprocessor.) Install a VRM in the VRM
connector on the system board for the second
microprocessor.
4. Check the system-event log for information that
indicates incompatible components.
1. Determine whether the CNFG LED is also lit. If the
CNFG LED is lit, a VRM is missing.
2. Check the system-event log to determine the
reason for the lit LED (for a VRM).
3. Find the failing VRM by checking the LEDs on the
system board.
4. Install any missing VRMs.
5. Reseat the following components:
a. Failing VRM
b. (Trained service technician only)
Microprocessor associated with the VRM
6. 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
Chapter 2. Installing optional devices
33
Advertisement
Table of Contents
