Lenovo ThinkServer TS200 6522 Hardware Maintenance Manual page 131

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 Hardware Maintenance Manual to determine which components are customer
replaceable units (CRUs) and which components are field replaceable units (FRUs).
v If an action step is preceded by "(Trained service technician only)," that step must be performed only by a
trained service technician.
System error or
information LED lit Description
VRM failure LED Microprocessor 2 VRM has failed or
is incorrectly installed.
System-board error System-board CPU VRD, power
LED voltage regulators, or both have
failed.
Battery failure LED Battery low.
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.
PCI slot 1 to PCI slot An error has occurred on a PCI bus
8 error LEDs or on the system board. An
additional LED is lit next to a
failing PCI slot.
H8 heartbeat LED Indicates the status of power-on
and power-off sequencing.
Action
1. Reseat the VRM
2. Replace the following components one at a time,
in the order shown, restarting the server each
time:
a. VRM
b. (Trained service technician only) System board
3. Replace the VRM
(Trained service technician only) Replace the system
board.
1. Replace the CMOS lithium battery, if necessary.
2. (Trained service technician only) Replace the
system board.
If the LED does not begin flashing within 30 seconds
of when the server is connected to power, do the
following:
1. (Trained service technician only) Use the IMM
recovery switch to recover the firmware (see
"System-board switches and jumpers" on page
120).
2. (Trained service technician only) Replace the
system board.
1. Check the system-event log for information about
the error.
2. If you cannot isolate the failing adapter through
the LEDs and the information in the system-event
log, remove one adapter at a time, and restart the
server after each adapter is removed.
3. If the failure remains, call Lenovo Service and
Support for additional troubleshooting
information.
1. If the H8 heartbeat LED is blinking at a 1 Hz rate,
no action is necessary.
2. (Trained service technician only) If the H8
heartbeat LED is not blinking, replace the system
board.
Chapter 5. Locating Server Controls and connectors
123