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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 Action
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, 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 21).
2. (Trained service technician only) Replace the
system board.
PCI slot 1 to PCI slot
8 error LEDs
An error has occurred on a PCI bus
or on the system board. An
additional LED is lit next to a failing
PCI slot.
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.
H8 heartbeat LED Indicates the status of power-on and
power-off sequencing.
1. If the H8 heartbeat LED is blinking ata1Hzrate,
no action is necessary.
2. (Trained service technician only) If the H8
heartbeat LED is not blinking, replace the system
board.
Power-supply LEDs
The following minimum configuration is required for the server to start:
v One microprocessor
v One 1 GB DIMM
v Power supply
v Power cord
v ServeRAID SAS/SATA adapter
v System board assembly
The following illustration shows the location of the power supply LEDs:
24 ThinkServer TS200 Types 6522, 6523, 6524, 6525, 6526, 6528, 6529, and 6530: Installation and User Guide