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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.
Error code Description Action
305-xxx-xxx Failed video monitor test.
1. Reseat the monitor cable.
2. Replace the following components one at a time,
in the order shown, restarting the server each
time:
a. Monitor
b. (Trained service technician only) System
board
405-xxx-000 Failed Ethernet test on controller on the
system board.
1. Run the Configuration/Setup Utility program.
Make sure that:
v The Ethernet adapter is not disabled.
v The BIOS code is at the latest level.
2. Run the loopback diagnostic.
3. (Trained service technician only) Replace the
system board.
202 ThinkServer TD100 and TD100x: Hardware Maintenance Manual