Identifying Problems Using The Light Path Diagnostics - Samsung SmartServer 3840 Installation Manual

Identifying problems using the Light Path Diagnostics

This section provides the information needed to identify problems that might arise dur-
ing installation using the Light Path Diagnostic feature.
The diagnostic panel:
for help in identifying problems. If a system error occurs, the system error light on the
front of this panel is lit. Press the front of the panel to open it and look for any lit LEDs.
These lit LEDs can help you identify the possible cause of the error. Make a note of
any LEDs that are lit, then close the panel.
LEDs on the top of the server:
is on the top of the server. After viewing the diagnostic panel, pull the server out and
view the top cover. In the center of the top cover is a set of 6 LEDs and the system ser-
vice labels. The numbers next to the LEDs correspond to the numbers located on the
system service label. Note the lit LED, and refer to the numbered block on the system
service label that corresponds to the lit LED. Then, follow the instructions, if any, in the
numbered block.
LEDs on the SMP Modules and system boards:
component that caused the error, you must locate the lit LED next to that component.
For example:
A system error has occurred and you have noted that the CPU LED is lit on the diag-
nostic panel. Referring to the LEDs on the top cover, you see that LED #2 is lit. You
then locate the panel on the system service label with the number 2 on it. In this case,
the instructions in the panel tell you to remove the lower SMP Expansion Module. This
tells you that the problem occurred with one of the microprocessors in the lower SMP
Module. Follow the instructions to remove the lower SMP Module; then, remove the
cover from the SMP Module. Located near the edge connectors on the circuit board is
the light-path capacitor switch. Press and hold the switch until you locate the lit LED
next to the defective microprocessor.
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Installation Guide
The diagnostics panel should be the first place you look
Another location you can use to find an error
To locate the actual