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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 If an action step is preceded by “(Trained service technician only),” that step must be performed only by a
trained service technician.
Lit EasyLED
diagnostics LED with
the system-error or
information LED also
lit Description Action
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.
SAS backplane connectors
The following illustration shows the connectors on the SAS backplane.
1 Hard disk drive connectors
2 Power connector
3 Signal connector
4 Configuration connector
138 ThinkServer TD200x Types 3719, 3821, 3822, and 3823: Hardware Maintenance Manual