System x3630 M4 (E5-2400 v2)
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Light path diagnostics panel
The light path diagnostics panel allows system engineers and administrators to easily and quickly
diagnose hardware problems on the System x servers. If a failure occurs, a light is illuminated on the front
panel of the server (level 1 light path) to alert the systems administrator that there is a problem. The
pop-out light path diagnostics panel (light path level 2) has a light against the failed subsystem. This light
directs the engineer or administrator directly to the failed component, which also has an illuminated LED
near it (light path level 3), for example, the DIMM error LED on the system board.
x3630 M4 offers two variants of light path diagnostics: basic and advanced. All standard x3630 M4
models include basic functionality that provides light path levels 1 and 3. Advanced functionality is
optional, and contains a pop-out panel that adds light path level 2. Storage-rich x3630 M4 servers
(servers with 12 or 14 drive bays) only support basic light path.
The following figures show basic (level 1) and advanced (level 2) light path levels.
Figure 8. Basic (level 1) light path for models with eight drive bays
Figure 9. Basic (level 1) light path for storage-rich models
