Power-Supply Leds - Lenovo ThinkServer TD200x Hardware Maintenance Manual

1. Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
2. 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
Battery failure LED
IMM heartbeat LED
PCI slot 1 to PCI slot 8 error LEDs
H8 heartbeat LED

Power-supply LEDs

The following illustration shows the power-supply LEDs on the rear of the server. For more information about
solving power-supply problems, see "Solving power problems" on page 119.
134
ThinkServer TD200x Hardware Maintenance Manual
Description
Battery low.
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
An error has occurred on a PCI
bus or on the system board. An
additional LED is lit next to a
failing PCI slot.
Indicates the status of power-on
and power-off sequencing.
Action
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 129).
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.