Lenovo RS210 User Manual download pdf (Page 74)

3. Remove the server cover and look inside the server for lit LEDs. Certain components inside the server

have LEDs that will be lit to indicate the location of a problem. For example, a DIMM error will light

the LED next to the failing DIMM on the system board.

Look at the system service label inside the side cover of the server, which gives an overview of

internal components. This information can often provide enough information to correct the error.

The following table describes the LEDs on the system board and PCI extender cards and suggested

actions to correct the detected problems.

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 7, “Parts listing, RS210 Types 6531, 6532, 6533, and 6534,” on page 177 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.

Component LED Description Action

DIMM error LEDs A memory DIMM has failed or is

incorrectly installed.

1. Remove the DIMM that has the lit error LED.

2. Reseat the DIMM.

3. Replace the following components one at a time,

in the order shown, restarting the server each

time:

a. DIMM

b. (Trained service technician only) System board

CPU error LEDs Microprocessor has failed, is

missing, or has been incorrectly

installed.

Note: (Trained service technician

only) Make sure that the

microprocessor is installed correctly;

see “Installing the microprocessor”

on page 141.

1. Check the system-event log to determine the

reason for the lit LED.

2. (Trained service technician) Reseat the failing

microprocessor

3. 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

System-board error

LED

System-board CPU VRD and/or

power voltage regulators have

failed.

(Trained service technician only) Replace the system

board.

Battery failure LED Battery low.

1. Replace the CMOS lithium battery, if necessary.

2. (Trained service technician only) Replace the

system board.

IMM heartbeat LED Indicates the status of the boot

process of the IMM.

When the server is connected to

power this LED flashes quickly to

indicate that the IMM code is

loading. When the loading is

complete, the LED stops flashing

briefly and then flashes slowly to

indicate that the IMM if fully

operational and you can press the

power-control button to start the

server.

If the LED does not begin flashing within 30 seconds

of when the server is connected to power, complete

the following steps:

1. (Trained service technician only) Rerecover the

firmware (see “Recovering the server firmware”

on page 100).

2. (Trained service technician only) Replace the

system board.

66 ThinkServer ThinkServer RS210, Types 6531, 6532, 6533, and 6534: Hardware Maintenance Manual

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Lenovo RS210 User Manual Page 74

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