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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 Chapter 3, “Parts listing, TD100 Types 6398, 6399, 6419, 6429, 4203, and 4206,” on page 25 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.
Power-supply
LEDs
Front
information
panel
power-on
LED
Description ActionAC DC
Off Off Off No power to the
server, or a problem
with the ac power
source.
1. Check the ac power to the server.
2. Make sure that the power cord is connected to a
functioning power source.
3. Remove one power supply at a time.
Lit Off Off DC source or power
supply power
problem.
1. Make sure that the power supply is connected to the
power backplane.
2. Remove and replace one power supply at a time.
3. View the system-error log (see “Error logs” on page
153).
Lit Lit Off Standby power
problem.
1. View the system-error log (see “Error logs” on page
153).
2. Remove one power supply at a time.
3. (Trained service technician only) Replace the power
backplane.
Lit Lit Flashing System power-on
problem.
1. View the system-error log (see “Error logs” on page
153).
2. Make sure that the power cables are seated correctly.
3. Press the power-control button on the control-panel.
4. Remove the optional Remote Supervisor Adapter II
SlimLine, and try to turn on the server.
5. (Trained service technician only) Reseat the system
board.
6. (Trained service technician only) Replace the system
board.
Lit Lit Lit The power is good. No action is necessary.
188 ThinkServer TD100 and TD100x: Hardware Maintenance Manual